vmsplice+splice experiment in stub_osd to test it too

40% CPU according to perf is lost inside do_splice() -> unix_stream_sendpage()
without io_uring and in various exc_page_fault() with io_uring

CMakeLists.txt

@@ -2,6 +2,6 @@ cmake_minimum_required(VERSION 2.8)
 
 project(vitastor)
 
-set(VERSION "0.6.12")
+set(VERSION "0.6.8")
 
 add_subdirectory(src)

README-ru.md

@@ -51,15 +51,14 @@ Vitastor на данный момент находится в статусе п
 - Базовая поддержка OpenStack: драйвер Cinder, патчи для Nova и libvirt
 - Слияние снапшотов (vitastor-cli {snap-rm,flatten,merge})
 - Консольный интерфейс для управления образами (vitastor-cli {ls,create,modify})
-- Плагин для Proxmox
 
 ## Планы развития
 
+- Поддержка удаления снапшотов (слияния слоёв)
 - Более корректные скрипты разметки дисков и автоматического запуска OSD
 - Другие инструменты администрирования
-- Плагины для OpenNebula и других облачных систем
+- Плагины для OpenNebula, Proxmox и других облачных систем
 - iSCSI-прокси
-- Упрощённый NFS прокси
 - Более быстрое переключение при отказах
 - Фоновая проверка целостности без контрольных сумм (сверка реплик)
 - Контрольные суммы
@@ -404,21 +403,12 @@ Vitastor с однопоточной NBD прокси на том же стен
   в этом случае пострадает.
 - Быстрая сеть, минимум 10 гбит/с
 - Для наилучшей производительности нужно отключить энергосбережение CPU: `cpupower idle-set -D 0 && cpupower frequency-set -g performance`.
-- На хостах мониторов:
-  - Пропишите нужные вам значения в файле `/usr/lib/vitastor/mon/make-units.sh`
-  - Создайте юниты systemd для etcd и мониторов: `/usr/lib/vitastor/mon/make-units.sh`
-- Пропишите etcd_address и osd_network в `/etc/vitastor/vitastor.conf`. Например:
-  ```
-  {
-    "etcd_address": ["10.200.1.10:2379","10.200.1.11:2379","10.200.1.12:2379"],
-    "osd_network": "10.200.1.0/24"
-  }
-  ```
-- Создайте юниты systemd для OSD: `/usr/lib/vitastor/make-osd.sh /dev/disk/by-partuuid/XXX [/dev/disk/by-partuuid/YYY ...]`
-- Вы можете менять параметры OSD в юнитах systemd или в `vitastor.conf`. Смысл некоторых параметров:
+- Пропишите нужные вам значения вверху файлов `/usr/lib/vitastor/mon/make-units.sh` и `/usr/lib/vitastor/mon/make-osd.sh`.
+- Создайте юниты systemd для etcd и мониторов: `/usr/lib/vitastor/mon/make-units.sh`
+- Создайте юниты для OSD: `/usr/lib/vitastor/mon/make-osd.sh /dev/disk/by-partuuid/XXX [/dev/disk/by-partuuid/YYY ...]`
+- Вы можете поменять параметры OSD в юнитах systemd. Смысл некоторых параметров:
   - `disable_data_fsync 1` - отключает fsync, используется с SSD с конденсаторами.
   - `immediate_commit all` - используется с SSD с конденсаторами.
-    Внимание: если установлено, также нужно установить его в то же значение в etcd в /vitastor/config/global
   - `disable_device_lock 1` - отключает блокировку файла устройства, нужно, только если вы запускаете
     несколько OSD на одном блочном устройстве.
   - `flusher_count 256` - "flusher" - микропоток, удаляющий старые данные из журнала.
@@ -538,75 +528,6 @@ for i in ./???-*.yaml; do kubectl apply -f $i; done
 
 После этого вы сможете создавать PersistentVolume. Пример смотрите в файле [csi/deploy/example-pvc.yaml](csi/deploy/example-pvc.yaml).
 
-### OpenStack
-
-Чтобы подключить Vitastor к OpenStack:
-
-- Установите пакеты vitastor-client, libvirt и QEMU из DEB или RPM репозитория Vitastor
-- Примените патч `patches/nova-21.diff` или `patches/nova-23.diff` к вашей инсталляции Nova.
-  nova-21.diff подходит для Nova 21-22, nova-23.diff подходит для Nova 23-24.
-- Скопируйте `patches/cinder-vitastor.py` в инсталляцию Cinder как `cinder/volume/drivers/vitastor.py`
-- Создайте тип томов в cinder.conf (см. ниже)
-- Обязательно заблокируйте доступ от виртуальных машин к сети Vitastor (OSD и etcd), т.к. Vitastor (пока) не поддерживает аутентификацию
-- Перезапустите Cinder и Nova
-
-Пример конфигурации Cinder:
-
-```
-[DEFAULT]
-enabled_backends = lvmdriver-1, vitastor-testcluster
-# ...
-
-[vitastor-testcluster]
-volume_driver = cinder.volume.drivers.vitastor.VitastorDriver
-volume_backend_name = vitastor-testcluster
-image_volume_cache_enabled = True
-volume_clear = none
-vitastor_etcd_address = 192.168.7.2:2379
-vitastor_etcd_prefix =
-vitastor_config_path = /etc/vitastor/vitastor.conf
-vitastor_pool_id = 1
-image_upload_use_cinder_backend = True
-```
-
-Чтобы помещать в Vitastor Glance-образы, нужно использовать
-[https://docs.openstack.org/cinder/pike/admin/blockstorage-volume-backed-image.html](образы на основе томов Cinder),
-однако, поддержка этой функции ещё не проверялась.
-
-### Proxmox
-
-Чтобы подключить Vitastor к Proxmox Virtual Environment (поддерживаются версии 6.4 и 7.1):
-
-- Добавьте соответствующий Debian-репозиторий Vitastor в sources.list на хостах Proxmox
-  (buster для 6.4, bullseye для 7.1)
-- Установите пакеты vitastor-client, pve-qemu-kvm, pve-storage-vitastor (* или см. сноску) из репозитория Vitastor
-- Определите тип хранилища в `/etc/pve/storage.cfg` (см. ниже)
-- Обязательно заблокируйте доступ от виртуальных машин к сети Vitastor (OSD и etcd), т.к. Vitastor (пока) не поддерживает аутентификацию
-- Перезапустите демон Proxmox: `systemctl restart pvedaemon`
-
-Пример `/etc/pve/storage.cfg` (единственная обязательная опция - vitastor_pool, все остальные
-перечислены внизу для понимания значений по умолчанию):
-
-```
-vitastor: vitastor
-    # Пул, в который будут помещаться образы дисков
-    vitastor_pool testpool
-    # Путь к файлу конфигурации
-    vitastor_config_path /etc/vitastor/vitastor.conf
-    # Адрес(а) etcd, нужны, только если не указаны в vitastor.conf
-    vitastor_etcd_address 192.168.7.2:2379/v3
-    # Префикс ключей метаданных в etcd
-    vitastor_etcd_prefix /vitastor
-    # Префикс имён образов
-    vitastor_prefix pve/
-    # Монтировать образы через NBD прокси, через ядро (нужно только для контейнеров)
-    vitastor_nbd 0
-```
-
-\* Примечание: вместо установки пакета pve-storage-vitastor вы можете вручную скопировать файл
-[patches/PVE_VitastorPlugin.pm](patches/PVE_VitastorPlugin.pm) на хосты Proxmox как
-`/usr/share/perl5/PVE/Storage/Custom/VitastorPlugin.pm`.
-
 ## Известные проблемы
 
 - Запросы удаления объектов могут в данный момент приводить к "неполным" объектам в EC-пулах,

README.md

@@ -45,15 +45,14 @@ breaking changes in the future. However, the following is implemented:
 - Basic OpenStack support: Cinder driver, Nova and libvirt patches
 - Snapshot merge tool (vitastor-cli {snap-rm,flatten,merge})
 - Image management CLI (vitastor-cli {ls,create,modify})
-- Proxmox storage plugin
 
 ## Roadmap
 
+- Snapshot deletion (layer merge) support
 - Better OSD creation and auto-start tools
 - Other administrative tools
-- Plugins for OpenNebula and other cloud systems
+- Plugins for OpenNebula, Proxmox and other cloud systems
 - iSCSI proxy
-- Simplified NFS proxy
 - Faster failover
 - Scrubbing without checksums (verification of replicas)
 - Checksums
@@ -357,21 +356,13 @@ and calculate disk offsets almost by hand. This will be fixed in near future.
   with lazy fsync, but prepare for inferior single-thread latency.
 - Get a fast network (at least 10 Gbit/s).
 - Disable CPU powersaving: `cpupower idle-set -D 0 && cpupower frequency-set -g performance`.
-- On the monitor hosts:
-  - Edit variables at the top of `/usr/lib/vitastor/mon/make-units.sh` to desired values.
-  - Create systemd units for the monitor and etcd: `/usr/lib/vitastor/mon/make-units.sh`
-- Put etcd_address and osd_network into `/etc/vitastor/vitastor.conf`. Example:
-  ```
-  {
-    "etcd_address": ["10.200.1.10:2379","10.200.1.11:2379","10.200.1.12:2379"],
-    "osd_network": "10.200.1.0/24"
-  }
-  ```
+- Check `/usr/lib/vitastor/mon/make-units.sh` and `/usr/lib/vitastor/mon/make-osd.sh` and
+  put desired values into the variables at the top of these files.
+- Create systemd units for the monitor and etcd: `/usr/lib/vitastor/mon/make-units.sh`
 - Create systemd units for your OSDs: `/usr/lib/vitastor/mon/make-osd.sh /dev/disk/by-partuuid/XXX [/dev/disk/by-partuuid/YYY ...]`
-- You can change OSD configuration in units or in `vitastor.conf`. Notable configuration variables:
+- You can edit the units and change OSD configuration. Notable configuration variables:
   - `disable_data_fsync 1` - only safe with server-grade drives with capacitors.
   - `immediate_commit all` - use this if all your drives are server-grade.
-    If all OSDs have it set to all then you should also put the same value in etcd into /vitastor/config/global
   - `disable_device_lock 1` - only required if you run multiple OSDs on one block device.
   - `flusher_count 256` - flusher is a micro-thread that removes old data from the journal.
     You don't have to worry about this parameter anymore, 256 is enough.
@@ -487,73 +478,6 @@ for i in ./???-*.yaml; do kubectl apply -f $i; done
 
 After that you'll be able to create PersistentVolumes. See example in [csi/deploy/example-pvc.yaml](csi/deploy/example-pvc.yaml).
 
-### OpenStack
-
-To enable Vitastor support in an OpenStack installation:
-
-- Install vitastor-client, patched QEMU and libvirt packages from Vitastor DEB or RPM repository
-- Use `patches/nova-21.diff` or `patches/nova-23.diff` to patch your Nova installation.
-  Patch 21 fits Nova 21-22, patch 23 fits Nova 23-24.
-- Install `patches/cinder-vitastor.py` as `..../cinder/volume/drivers/vitastor.py`
-- Define a volume type in cinder.conf (see below)
-- Block network access from VMs to Vitastor network (to OSDs and etcd), because Vitastor doesn't support authentication (yet)
-- Restart Cinder and Nova
-
-Cinder volume type configuration example:
-
-```
-[DEFAULT]
-enabled_backends = lvmdriver-1, vitastor-testcluster
-# ...
-
-[vitastor-testcluster]
-volume_driver = cinder.volume.drivers.vitastor.VitastorDriver
-volume_backend_name = vitastor-testcluster
-image_volume_cache_enabled = True
-volume_clear = none
-vitastor_etcd_address = 192.168.7.2:2379
-vitastor_etcd_prefix =
-vitastor_config_path = /etc/vitastor/vitastor.conf
-vitastor_pool_id = 1
-image_upload_use_cinder_backend = True
-```
-
-To put Glance images in Vitastor, use [https://docs.openstack.org/cinder/pike/admin/blockstorage-volume-backed-image.html](volume-backed images),
-although the support has not been verified yet.
-
-### Proxmox
-
-To enable Vitastor support in Proxmox Virtual Environment (6.4 and 7.1 are supported):
-
-- Add the corresponding Vitastor Debian repository into sources.list on Proxmox hosts
-  (buster for 6.4, bullseye for 7.1)
-- Install vitastor-client, pve-qemu-kvm, pve-storage-vitastor (* or see note) packages from Vitastor repository
-- Define storage in `/etc/pve/storage.cfg` (see below)
-- Block network access from VMs to Vitastor network (to OSDs and etcd), because Vitastor doesn't support authentication (yet)
-- Restart pvedaemon: `systemctl restart pvedaemon`
-
-`/etc/pve/storage.cfg` example (the only required option is vitastor_pool, all others
-are listed below with their default values):
-
-```
-vitastor: vitastor
-    # pool to put new images into
-    vitastor_pool testpool
-    # path to the configuration file
-    vitastor_config_path /etc/vitastor/vitastor.conf
-    # etcd address(es), required only if missing in the configuration file
-    vitastor_etcd_address 192.168.7.2:2379/v3
-    # prefix for keys in etcd
-    vitastor_etcd_prefix /vitastor
-    # prefix for images
-    vitastor_prefix pve/
-    # use NBD mounter (only required for containers)
-    vitastor_nbd 0
-```
-
-\* Note: you can also manually copy [patches/PVE_VitastorPlugin.pm](patches/PVE_VitastorPlugin.pm) to Proxmox hosts
-as `/usr/share/perl5/PVE/Storage/Custom/VitastorPlugin.pm` instead of installing pve-storage-vitastor.
-
 ## Known Problems
 
 - Object deletion requests may currently lead to 'incomplete' objects in EC pools

csi/Makefile

@@ -1,4 +1,4 @@
-VERSION ?= v0.6.12
+VERSION ?= v0.6.8
 
 all: build push
 

csi/deploy/004-csi-nodeplugin.yaml

@@ -49,7 +49,7 @@ spec:
             capabilities:
               add: ["SYS_ADMIN"]
             allowPrivilegeEscalation: true
-          image: vitalif/vitastor-csi:v0.6.12
+          image: vitalif/vitastor-csi:v0.6.8
           args:
             - "--node=$(NODE_ID)"
             - "--endpoint=$(CSI_ENDPOINT)"

csi/deploy/007-csi-provisioner.yaml

@@ -116,7 +116,7 @@ spec:
             privileged: true
             capabilities:
               add: ["SYS_ADMIN"]
-          image: vitalif/vitastor-csi:v0.6.12
+          image: vitalif/vitastor-csi:v0.6.8
           args:
             - "--node=$(NODE_ID)"
             - "--endpoint=$(CSI_ENDPOINT)"

csi/src/config.go

@@ -5,7 +5,7 @@ package vitastor
 
 const (
     vitastorCSIDriverName    = "csi.vitastor.io"
-    vitastorCSIDriverVersion = "0.6.12"
+    vitastorCSIDriverVersion = "0.6.8"
 )
 
 // Config struct fills the parameters of request or user input

debian/changelog

@@ -1,4 +1,4 @@
-vitastor (0.6.12-1) unstable; urgency=medium
+vitastor (0.6.8-1) unstable; urgency=medium
 
   * RDMA support
   * Bugfixes

debian/control

@@ -9,7 +9,7 @@ Rules-Requires-Root: no
 
 Package: vitastor
 Architecture: amd64
-Depends: vitastor-osd, vitastor-mon, vitastor-client, vitastor-client-dev, vitastor-fio
+Depends: vitastor-osd, vitastor-mon, vitastor-client, vitastor-client-dev, vitastor-fio, vitastor-qemu
 Description: Vitastor, a fast software-defined clustered block storage
  Vitastor is a small, simple and fast clustered block storage (storage for VM drives),
  architecturally similar to Ceph which means strong consistency, primary-replication,
@@ -48,8 +48,8 @@ Depends: ${shlibs:Depends}, ${misc:Depends}, vitastor-client (= ${binary:Version
 Description: Vitastor, a fast software-defined clustered block storage - fio drivers
  Vitastor fio drivers for benchmarking.
 
-Package: pve-storage-vitastor
+Package: vitastor-qemu
 Architecture: amd64
-Depends: ${shlibs:Depends}, ${misc:Depends}, vitastor-client (= ${binary:Version})
-Description: Vitastor Proxmox Virtual Environment storage plugin
- Vitastor storage plugin for Proxmox Virtual Environment.
+Depends: ${shlibs:Depends}, ${misc:Depends}, vitastor-client (= ${binary:Version}), qemu (= ${dep:qemu})
+Description: Vitastor, a fast software-defined clustered block storage - QEMU driver
+ Vitastor QEMU block device driver.

debian/libvirt.Dockerfile

@@ -1,40 +0,0 @@
-# Build patched libvirt for Debian Buster or Bullseye/Sid inside a container
-# cd ..; podman build --build-arg REL=bullseye -v `pwd`/packages:/root/packages -f debian/libvirt.Dockerfile .
-
-ARG REL=
-FROM debian:$REL
-ARG REL=
-
-WORKDIR /root
-
-RUN if [ "$REL" = "buster" -o "$REL" = "bullseye" ]; then \
-        echo "deb http://deb.debian.org/debian $REL-backports main" >> /etc/apt/sources.list; \
-        echo >> /etc/apt/preferences; \
-        echo 'Package: *' >> /etc/apt/preferences; \
-        echo "Pin: release a=$REL-backports" >> /etc/apt/preferences; \
-        echo 'Pin-Priority: 500' >> /etc/apt/preferences; \
-    fi; \
-    grep '^deb ' /etc/apt/sources.list | perl -pe 's/^deb/deb-src/' >> /etc/apt/sources.list; \
-    echo 'APT::Install-Recommends false;' >> /etc/apt/apt.conf; \
-    echo 'APT::Install-Suggests false;' >> /etc/apt/apt.conf
-
-RUN apt-get update; apt-get -y install devscripts
-RUN apt-get -y build-dep libvirt0
-RUN apt-get -y install libglusterfs-dev
-RUN apt-get --download-only source libvirt
-
-ADD patches/libvirt-5.0-vitastor.diff patches/libvirt-7.0-vitastor.diff patches/libvirt-7.5-vitastor.diff patches/libvirt-7.6-vitastor.diff /root
-RUN set -e; \
-    mkdir -p /root/packages/libvirt-$REL; \
-    rm -rf /root/packages/libvirt-$REL/*; \
-    cd /root/packages/libvirt-$REL; \
-    dpkg-source -x /root/libvirt*.dsc; \
-    D=$(ls -d libvirt-*/); \
-    V=$(ls -d libvirt-*/ | perl -pe 's/libvirt-(\d+\.\d+).*/$1/'); \
-    cp /root/libvirt-$V-vitastor.diff $D/debian/patches; \
-    echo libvirt-$V-vitastor.diff >> $D/debian/patches/series; \
-    cd $D; \
-    V=$(head -n1 debian/changelog | perl -pe 's/^.*\((.*?)(~bpo[\d\+]*)?(\+deb[u\d]+)?\).*$/$1/')+vitastor2; \
-    DEBEMAIL="Vitaliy Filippov <vitalif@yourcmc.ru>" dch -D $REL -v $V 'Add Vitastor support'; \
-    DEB_BUILD_OPTIONS=nocheck dpkg-buildpackage --jobs=auto -sa; \
-    rm -rf /root/packages/libvirt-$REL/$D

debian/patched-qemu.Dockerfile

@@ -21,18 +21,14 @@ RUN if [ "$REL" = "buster" -o "$REL" = "bullseye" ]; then \
 RUN apt-get update
 RUN apt-get -y install qemu fio liburing1 liburing-dev libgoogle-perftools-dev devscripts
 RUN apt-get -y build-dep qemu
+RUN apt-get -y build-dep fio
 # To build a custom version
 #RUN cp /root/packages/qemu-orig/* /root
 RUN apt-get --download-only source qemu
+RUN apt-get --download-only source fio
 
-ADD patches/qemu-5.0-vitastor.patch patches/qemu-5.1-vitastor.patch patches/qemu-6.1-vitastor.patch src/qemu_driver.c /root/vitastor/patches/
+ADD patches/qemu-5.0-vitastor.patch patches/qemu-5.1-vitastor.patch patches/qemu-6.1-vitastor.patch /root/vitastor/patches/
 RUN set -e; \
-    apt-get install -y wget; \
-    wget -q -O /etc/apt/trusted.gpg.d/vitastor.gpg https://vitastor.io/debian/pubkey.gpg; \
-    (echo deb http://vitastor.io/debian $REL main > /etc/apt/sources.list.d/vitastor.list); \
-    (echo "APT::Install-Recommends false;" > /etc/apt/apt.conf) && \
-    apt-get update; \
-    apt-get install -y vitastor-client vitastor-client-dev quilt; \
     mkdir -p /root/packages/qemu-$REL; \
     rm -rf /root/packages/qemu-$REL/*; \
     cd /root/packages/qemu-$REL; \
@@ -51,11 +47,7 @@ RUN set -e; \
         echo qemu-5.1-vitastor.patch >> $P/series; \
     fi; \
     cd /root/packages/qemu-$REL/qemu-*/; \
-    quilt push -a; \
-    quilt add block/vitastor.c; \
-    cp /root/vitastor/patches/qemu_driver.c block/vitastor.c; \
-    quilt refresh; \
     V=$(head -n1 debian/changelog | perl -pe 's/^.*\((.*?)(~bpo[\d\+]*)?\).*$/$1/')+vitastor1; \
-    DEBEMAIL="Vitaliy Filippov <vitalif@yourcmc.ru>" dch -D $REL -v $V 'Plug Vitastor block driver'; \
+    DEBFULLNAME="Vitaliy Filippov <vitalif@yourcmc.ru>" dch -D $REL -v $V 'Plug Vitastor block driver'; \
     DEB_BUILD_OPTIONS=nocheck dpkg-buildpackage --jobs=auto -sa; \
     rm -rf /root/packages/qemu-$REL/qemu-*/

debian/pve-storage-vitastor.install

@@ -1 +0,0 @@
-patches/PVE_VitastorPlugin.pm usr/share/perl5/PVE/Storage/Custom/VitastorPlugin.pm

debian/qemu_version

@@ -0,0 +1 @@
+dep:qemu=1:5.2+dfsg-10+vitastor1

debian/raw.h

@@ -1,19 +0,0 @@
-/* Removed in Linux 5.14 */
-
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef __LINUX_RAW_H
-#define __LINUX_RAW_H
-
-#include <linux/types.h>
-
-#define RAW_SETBIND	_IO( 0xac, 0 )
-#define RAW_GETBIND	_IO( 0xac, 1 )
-
-struct raw_config_request 
-{
-	int	raw_minor;
-	__u64	block_major;
-	__u64	block_minor;
-};
-
-#endif /* __LINUX_RAW_H */

debian/rules

@@ -6,5 +6,5 @@ export DH_VERBOSE = 1
 
 override_dh_installdeb:
 	cat debian/fio_version >> debian/vitastor-fio.substvars
-	[ -f debian/qemu_version ] && (cat debian/qemu_version >> debian/vitastor-qemu.substvars) || true
+	cat debian/qemu_version >> debian/vitastor-qemu.substvars
 	dh_installdeb

debian/vitastor-client.install

@@ -3,4 +3,3 @@ usr/bin/vitastor-cli
 usr/bin/vitastor-rm
 usr/bin/vitastor-nbd
 usr/lib/*/libvitastor*.so*
-mon/make-osd.sh /usr/lib/vitastor

debian/vitastor-osd.install

@@ -1,2 +1,3 @@
 usr/bin/vitastor-osd
 usr/bin/vitastor-dump-journal
+mon/make-osd.sh /usr/lib/vitastor

debian/vitastor-qemu.install

@@ -0,0 +1 @@
+usr/lib/*/qemu/*

debian/vitastor.Dockerfile

@@ -7,11 +7,11 @@ ARG REL=
 
 WORKDIR /root
 
-RUN if [ "$REL" = "buster" -o "$REL" = "bullseye" ]; then \
-        echo "deb http://deb.debian.org/debian $REL-backports main" >> /etc/apt/sources.list; \
+RUN if [ "$REL" = "buster" ]; then \
+        echo 'deb http://deb.debian.org/debian buster-backports main' >> /etc/apt/sources.list; \
         echo >> /etc/apt/preferences; \
         echo 'Package: *' >> /etc/apt/preferences; \
-        echo "Pin: release a=$REL-backports" >> /etc/apt/preferences; \
+        echo 'Pin: release a=buster-backports' >> /etc/apt/preferences; \
         echo 'Pin-Priority: 500' >> /etc/apt/preferences; \
     fi; \
     grep '^deb ' /etc/apt/sources.list | perl -pe 's/^deb/deb-src/' >> /etc/apt/sources.list; \
@@ -19,8 +19,10 @@ RUN if [ "$REL" = "buster" -o "$REL" = "bullseye" ]; then \
     echo 'APT::Install-Suggests false;' >> /etc/apt/apt.conf
 
 RUN apt-get update
-RUN apt-get -y install fio liburing1 liburing-dev libgoogle-perftools-dev devscripts
+RUN apt-get -y install qemu fio liburing1 liburing-dev libgoogle-perftools-dev devscripts
+RUN apt-get -y build-dep qemu
 RUN apt-get -y build-dep fio
+RUN apt-get --download-only source qemu
 RUN apt-get --download-only source fio
 RUN apt-get update && apt-get -y install libjerasure-dev cmake libibverbs-dev
 
@@ -30,25 +32,37 @@ RUN set -e -x; \
     cd /root/fio-build/; \
     rm -rf /root/fio-build/*; \
     dpkg-source -x /root/fio*.dsc; \
+    cd /root/packages/qemu-$REL/; \
+    rm -rf qemu*/; \
+    dpkg-source -x qemu*.dsc; \
+    cd /root/packages/qemu-$REL/qemu*/; \
+    debian/rules b/configure-stamp; \
+    cd b/qemu; \
+    make -j8 qapi/qapi-builtin-types.h; \
     mkdir -p /root/packages/vitastor-$REL; \
     rm -rf /root/packages/vitastor-$REL/*; \
     cd /root/packages/vitastor-$REL; \
-    cp -r /root/vitastor vitastor-0.6.12; \
-    cd vitastor-0.6.12; \
-    ln -s /root/fio-build/fio-*/ ./fio; \
+    cp -r /root/vitastor vitastor-0.6.8; \
+    ln -s /root/packages/qemu-$REL/qemu-*/ vitastor-0.6.8/qemu; \
+    ln -s /root/fio-build/fio-*/ vitastor-0.6.8/fio; \
+    cd vitastor-0.6.8; \
     FIO=$(head -n1 fio/debian/changelog | perl -pe 's/^.*\((.*?)\).*$/$1/'); \
-    ls /usr/include/linux/raw.h || cp ./debian/raw.h /usr/include/linux/raw.h; \
+    QEMU=$(head -n1 qemu/debian/changelog | perl -pe 's/^.*\((.*?)\).*$/$1/'); \
+    sh copy-qemu-includes.sh; \
     sh copy-fio-includes.sh; \
-    rm fio; \
+    rm qemu fio; \
     mkdir -p a b debian/patches; \
+    mv qemu-copy b/qemu; \
     mv fio-copy b/fio; \
-    diff -NaurpbB a b > debian/patches/fio-headers.patch || true; \
-    echo fio-headers.patch >> debian/patches/series; \
+    diff -NaurpbB a b > debian/patches/qemu-fio-headers.patch || true; \
+    echo qemu-fio-headers.patch >> debian/patches/series; \
     rm -rf a b; \
+    rm -rf /root/packages/qemu-$REL/qemu*/; \
     echo "dep:fio=$FIO" > debian/fio_version; \
+    echo "dep:qemu=$QEMU" > debian/qemu_version; \
     cd /root/packages/vitastor-$REL; \
-    tar --sort=name --mtime='2020-01-01' --owner=0 --group=0 --exclude=debian -cJf vitastor_0.6.12.orig.tar.xz vitastor-0.6.12; \
-    cd vitastor-0.6.12; \
+    tar --sort=name --mtime='2020-01-01' --owner=0 --group=0 --exclude=debian -cJf vitastor_0.6.8.orig.tar.xz vitastor-0.6.8; \
+    cd vitastor-0.6.8; \
     V=$(head -n1 debian/changelog | perl -pe 's/^.*\((.*?)\).*$/$1/'); \
     DEBFULLNAME="Vitaliy Filippov <vitalif@yourcmc.ru>" dch -D $REL -v "$V""$REL" "Rebuild for $REL"; \
     DEB_BUILD_OPTIONS=nocheck dpkg-buildpackage --jobs=auto -sa; \

docs/params/common.yml

@@ -1,35 +0,0 @@
-- name: config_path
-  type: string
-  default: "/etc/vitastor/vitastor.conf"
-  info: |
-    Path to the JSON configuration file. Configuration file is optional,
-    a non-existing configuration file does not prevent Vitastor from
-    running if required parameters are specified.
-  info_ru: |
-    Путь к файлу конфигурации в формате JSON. Файл конфигурации необязателен,
-    без него Vitastor тоже будет работать, если переданы необходимые параметры.
-- name: etcd_address
-  type: string or array of strings
-  type_ru: строка или массив строк
-  info: |
-    etcd connection endpoint(s). Multiple endpoints may be delimited by "," or
-    specified in a JSON array `["10.0.115.10:2379/v3","10.0.115.11:2379/v3"]`.
-    Note that https is not supported for etcd connections yet.
-  info_ru: |
-    Адрес(а) подключения к etcd. Несколько адресов могут разделяться запятой
-    или указываться в виде JSON-массива `["10.0.115.10:2379/v3","10.0.115.11:2379/v3"]`.
-- name: etcd_prefix
-  type: string
-  default: "/vitastor"
-  info: |
-    Prefix for all keys in etcd used by Vitastor. You can change prefix and, for
-    example, use a single etcd cluster for multiple Vitastor clusters.
-  info_ru: |
-    Префикс для ключей etcd, которые использует Vitastor. Вы можете задать другой
-    префикс, например, чтобы запустить несколько кластеров Vitastor с одним
-    кластером etcd.
-- name: log_level
-  type: int
-  default: 0
-  info: Log level. Raise if you want more verbose output.
-  info_ru: Уровень логгирования. Повысьте, если хотите более подробный вывод.

docs/params/layout-cluster.yml

@@ -1,200 +0,0 @@
-- name: block_size
-  type: int
-  default: 131072
-  info: |
-    Size of objects (data blocks) into which all physical and virtual drives are
-    subdivided in Vitastor. One of current main settings in Vitastor, affects
-    memory usage, write amplification and I/O load distribution effectiveness.
-
-    Recommended default block size is 128 KB for SSD and 4 MB for HDD. In fact,
-    it's possible to use 4 MB for SSD too - it will lower memory usage, but
-    may increase average WA and reduce linear performance.
-
-    OSDs with different block sizes (for example, SSD and SSD+HDD OSDs) can
-    currently coexist in one etcd instance only within separate Vitastor
-    clusters with different etcd_prefix'es.
-
-    Also block size can't be changed after OSD initialization without losing
-    data.
-
-    You must always specify block_size in etcd in /vitastor/config/global if
-    you change it so all clients can know about it.
-
-    OSD memory usage is roughly (SIZE / BLOCK * 68 bytes) which is roughly
-    544 MB per 1 TB of used disk space with the default 128 KB block size.
-  info_ru: |
-    Размер объектов (блоков данных), на которые делятся физические и виртуальные
-    диски в Vitastor. Одна из ключевых на данный момент настроек, влияет на
-    потребление памяти, объём избыточной записи (write amplification) и
-    эффективность распределения нагрузки по OSD.
-
-    Рекомендуемые по умолчанию размеры блока - 128 килобайт для SSD и 4
-    мегабайта для HDD. В принципе, для SSD можно тоже использовать 4 мегабайта,
-    это понизит использование памяти, но ухудшит распределение нагрузки и в
-    среднем увеличит WA.
-
-    OSD с разными размерами блока (например, SSD и SSD+HDD OSD) на данный
-    момент могут сосуществовать в рамках одного etcd только в виде двух независимых
-    кластеров Vitastor с разными etcd_prefix.
-
-    Также размер блока нельзя менять после инициализации OSD без потери данных.
-
-    Если вы меняете размер блока, обязательно прописывайте его в etcd в
-    /vitastor/config/global, дабы все клиенты его знали.
-
-    Потребление памяти OSD составляет примерно (РАЗМЕР / БЛОК * 68 байт),
-    т.е. примерно 544 МБ памяти на 1 ТБ занятого места на диске при
-    стандартном 128 КБ блоке.
-- name: bitmap_granularity
-  type: int
-  default: 4096
-  info: |
-    Required virtual disk write alignment ("sector size"). Must be a multiple
-    of disk_alignment. It's called bitmap granularity because Vitastor tracks
-    an allocation bitmap for each object containing 2 bits per each
-    (bitmap_granularity) bytes.
-
-    This parameter can't be changed after OSD initialization without losing
-    data. Also it's fixed for the whole Vitastor cluster i.e. two different
-    values can't be used in a single Vitastor cluster.
-
-    Clients MUST be aware of this parameter value, so put it into etcd key
-    /vitastor/config/global if you change it for any reason.
-  info_ru: |
-    Требуемое выравнивание записи на виртуальные диски (размер их "сектора").
-    Должен быть кратен disk_alignment. Называется гранулярностью битовой карты
-    потому, что Vitastor хранит битовую карту для каждого объекта, содержащую
-    по 2 бита на каждые (bitmap_granularity) байт.
-
-    Данный параметр нельзя менять после инициализации OSD без потери данных.
-    Также он фиксирован для всего кластера Vitastor, т.е. разные значения
-    не могут сосуществовать в одном кластере.
-
-    Клиенты ДОЛЖНЫ знать правильное значение этого параметра, так что если вы
-    его меняете, обязательно прописывайте изменённое значение в etcd в ключ
-    /vitastor/config/global.
-- name: immediate_commit
-  type: string
-  default: false
-  info: |
-    Another parameter which is really important for performance.
-
-    Desktop SSDs are very fast (100000+ iops) for simple random writes
-    without cache flush. However, they are really slow (only around 1000 iops)
-    if you try to fsync() each write, that is, when you want to guarantee that
-    each change gets immediately persisted to the physical media.
-
-    Server-grade SSDs with "Advanced/Enhanced Power Loss Protection" or with
-    "Supercapacitor-based Power Loss Protection", on the other hand, are equally
-    fast with and without fsync because their cache is protected from sudden
-    power loss by a built-in supercapacitor-based "UPS".
-
-    Some software-defined storage systems always fsync each write and thus are
-    really slow when used with desktop SSDs. Vitastor, however, can also
-    efficiently utilize desktop SSDs by postponing fsync until the client calls
-    it explicitly.
-
-    This is what this parameter regulates. When it's set to "all" the whole
-    Vitastor cluster commits each change to disks immediately and clients just
-    ignore fsyncs because they know for sure that they're unneeded. This reduces
-    the amount of network roundtrips performed by clients and improves
-    performance. So it's always better to use server grade SSDs with
-    supercapacitors even with Vitastor, especially given that they cost only
-    a bit more than desktop models.
-
-    There is also a common SATA SSD (and HDD too!) firmware bug (or feature)
-    that makes server SSDs which have supercapacitors slow with fsync. To check
-    if your SSDs are affected, compare benchmark results from `fio -name=test
-    -ioengine=libaio -direct=1 -bs=4k -rw=randwrite -iodepth=1` with and without
-    `-fsync=1`. Results should be the same. If fsync=1 result is worse you can
-    try to work around this bug by "disabling" drive write-back cache by running
-    `hdparm -W 0 /dev/sdXX` or `echo write through > /sys/block/sdXX/device/scsi_disk/*/cache_type`
-    (IMPORTANT: don't mistake it with `/sys/block/sdXX/queue/write_cache` - it's
-    unsafe to change by hand). The same may apply to newer HDDs with internal
-    SSD cache or "media-cache" - for example, a lot of Seagate EXOS drives have
-    it (they have internal SSD cache even though it's not stated in datasheets).
-
-    This parameter must be set both in etcd in /vitastor/config/global and in
-    OSD command line or configuration. Setting it to "all" or "small" requires
-    enabling disable_journal_fsync and disable_meta_fsync, setting it to "all"
-    also requires enabling disable_data_fsync.
-
-    TLDR: For optimal performance, set immediate_commit to "all" if you only use
-    SSDs with supercapacitor-based power loss protection (nonvolatile
-    write-through cache) for both data and journals in the whole Vitastor
-    cluster. Set it to "small" if you only use such SSDs for journals. Leave
-    empty if your drives have write-back cache.
-  info_ru: |
-    Ещё один важный для производительности параметр.
-
-    Модели SSD для настольных компьютеров очень быстрые (100000+ операций в
-    секунду) при простой случайной записи без сбросов кэша. Однако они очень
-    медленные (всего порядка 1000 iops), если вы пытаетесь сбрасывать кэш после
-    каждой записи, то есть, если вы пытаетесь гарантировать, что каждое
-    изменение физически записывается в энергонезависимую память.
-
-    С другой стороны, серверные SSD с конденсаторами - функцией, называемой
-    "Advanced/Enhanced Power Loss Protection" или просто "Supercapacitor-based
-    Power Loss Protection" - одинаково быстрые и со сбросом кэша, и без
-    него, потому что их кэш защищён от потери питания встроенным "источником
-    бесперебойного питания" на основе суперконденсаторов и на самом деле они
-    его никогда не сбрасывают.
-
-    Некоторые программные СХД всегда сбрасывают кэши дисков при каждой записи
-    и поэтому работают очень медленно с настольными SSD. Vitastor, однако, может
-    откладывать fsync до явного его вызова со стороны клиента и таким образом
-    эффективно утилизировать настольные SSD.
-
-    Данный параметр влияет как раз на это. Когда он установлен в значение "all",
-    весь кластер Vitastor мгновенно фиксирует каждое изменение на физические
-    носители и клиенты могут просто игнорировать запросы fsync, т.к. они точно
-    знают, что fsync-и не нужны. Это уменьшает число необходимых обращений к OSD
-    по сети и улучшает производительность. Поэтому даже с Vitastor лучше всегда
-    использовать только серверные модели SSD с суперконденсаторами, особенно
-    учитывая то, что стоят они ненамного дороже настольных.
-
-    Также в прошивках SATA SSD (и даже HDD!) очень часто встречается либо баг,
-    либо просто особенность логики, из-за которой серверные SSD, имеющие
-    конденсаторы и защиту от потери питания, всё равно медленно работают с
-    fsync. Чтобы понять, подвержены ли этой проблеме ваши SSD, сравните
-    результаты тестов `fio -name=test -ioengine=libaio -direct=1 -bs=4k
-    -rw=randwrite -iodepth=1` без и с опцией `-fsync=1`. Результаты должны
-    быть одинаковые. Если результат с `fsync=1` хуже, вы можете попробовать
-    обойти проблему, "отключив" кэш записи диска командой `hdparm -W 0 /dev/sdXX`
-    либо `echo write through > /sys/block/sdXX/device/scsi_disk/*/cache_type`
-    (ВАЖНО: не перепутайте с `/sys/block/sdXX/queue/write_cache` - этот параметр
-    менять руками небезопасно). Такая же проблема может встречаться и в новых
-    HDD-дисках с внутренним SSD или "медиа" кэшем - например, она встречается во
-    многих дисках Seagate EXOS (у них есть внутренний SSD-кэш, хотя это и не
-    указано в спецификациях).
-
-    Данный параметр нужно указывать и в etcd в /vitastor/config/global, и в
-    командной строке или конфигурации OSD. Значения "all" и "small" требуют
-    включения disable_journal_fsync и disable_meta_fsync, значение "all" также
-    требует включения disable_data_fsync.
-
-    Итого, вкратце: для оптимальной производительности установите
-    immediate_commit в значение "all", если вы используете в кластере только SSD
-    с суперконденсаторами и для данных, и для журналов. Если вы используете
-    такие SSD для всех журналов, но не для данных - можете установить параметр
-    в "small". Если и какие-то из дисков журналов имеют волатильный кэш записи -
-    оставьте параметр пустым.
-- name: client_dirty_limit
-  type: int
-  default: 33554432
-  info: |
-    Without immediate_commit=all this parameter sets the limit of "dirty"
-    (not committed by fsync) data allowed by the client before forcing an
-    additional fsync and committing the data. Also note that the client always
-    holds a copy of uncommitted data in memory so this setting also affects
-    RAM usage of clients.
-
-    This parameter doesn't affect OSDs themselves.
-  info_ru: |
-    При работе без immediate_commit=all - это лимит объёма "грязных" (не
-    зафиксированных fsync-ом) данных, при достижении которого клиент будет
-    принудительно вызывать fsync и фиксировать данные. Также стоит иметь в виду,
-    что в этом случае до момента fsync клиент хранит копию незафиксированных
-    данных в памяти, то есть, настройка влияет на потребление памяти клиентами.
-
-    Параметр не влияет на сами OSD.

docs/params/layout-osd.yml

@@ -1,205 +0,0 @@
-- name: data_device
-  type: string
-  info: |
-    Path to the block device to use for data. It's highly recommendded to use
-    stable paths for all device names: `/dev/disk/by-partuuid/xxx...` instead
-    of just `/dev/sda` or `/dev/nvme0n1` to not mess up after server restart.
-    Files can also be used instead of block devices, but this is implemented
-    only for testing purposes and not for production.
-  info_ru: |
-    Путь к диску (блочному устройству) для хранения данных. Крайне рекомендуется
-    использовать стабильные пути: `/dev/disk/by-partuuid/xxx...` вместо простых
-    `/dev/sda` или `/dev/nvme0n1`, чтобы пути не могли спутаться после
-    перезагрузки сервера. Также вместо блочных устройств можно указывать файлы,
-    но это реализовано только для тестирования, а не для боевой среды.
-- name: meta_device
-  type: string
-  info: |
-    Path to the block device to use for the metadata. Metadata must be on a fast
-    SSD or performance will suffer. If this option is skipped, `data_device` is
-    used for the metadata.
-  info_ru: |
-    Путь к диску метаданных. Метаданные должны располагаться на быстром
-    SSD-диске, иначе производительность пострадает. Если эта опция не указана,
-    для метаданных используется `data_device`.
-- name: journal_device
-  type: string
-  info: |
-    Path to the block device to use for the journal. Journal must be on a fast
-    SSD or performance will suffer. If this option is skipped, `meta_device` is
-    used for the journal, and if it's also empty, journal is put on
-    `data_device`. It's almost always fine to put metadata and journal on the
-    same device, in this case you only need to set `meta_device`.
-  info_ru: |
-    Путь к диску журнала. Журнал должен располагаться на быстром SSD-диске,
-    иначе производительность пострадает. Если эта опция не указана,
-    для журнала используется `meta_device`, если же пуста и она, журнал
-    располагается на `data_device`. Нормально располагать журнал и метаданные
-    на одном устройстве, в этом случае достаточно указать только `meta_device`.
-- name: journal_offset
-  type: int
-  default: 0
-  info: Offset on the device in bytes where the journal is stored.
-  info_ru: Смещение на устройстве в байтах, по которому располагается журнал.
-- name: journal_size
-  type: int
-  info: |
-    Journal size in bytes. Doesn't have to be large, 16-32 MB is usually fine.
-    By default, the whole journal device will be used for the journal. You must
-    set it to some value manually (or use make-osd.sh) if you colocate the
-    journal with data or metadata.
-  info_ru: |
-    Размер журнала в байтах. Большим быть не обязан, 16-32 МБ обычно достаточно.
-    По умолчанию для журнала используется всё устройство журнала. Если же вы
-    размещаете журнал на устройстве данных или метаданных, то вы должны
-    установить эту опцию в какое-то значение сами (или использовать скрипт
-    make-osd.sh).
-- name: meta_offset
-  type: int
-  default: 0
-  info: |
-    Offset on the device in bytes where the metadata area is stored.
-    Again, set it to something if you colocate metadata with journal or data.
-  info_ru: |
-    Смещение на устройстве в байтах, по которому располагаются метаданные.
-    Эту опцию нужно задать, если метаданные у вас хранятся на том же
-    устройстве, что данные или журнал.
-- name: data_offset
-  type: int
-  default: 0
-  info: |
-    Offset on the device in bytes where the data area is stored.
-    Again, set it to something if you colocate data with journal or metadata.
-  info_ru: |
-    Смещение на устройстве в байтах, по которому располагаются данные.
-    Эту опцию нужно задать, если данные у вас хранятся на том же
-    устройстве, что метаданные или журнал.
-- name: data_size
-  type: int
-  info: |
-    Data area size in bytes. By default, the whole data device up to the end
-    will be used for the data area, but you can restrict it if you want to use
-    a smaller part. Note that there is no option to set metadata area size -
-    it's derived from the data area size.
-  info_ru: |
-    Размер области данных в байтах. По умолчанию под данные будет использована
-    вся доступная область устройства данных до конца устройства, но вы можете
-    использовать эту опцию, чтобы ограничить её меньшим размером. Заметьте, что
-    опции размера области метаданных нет - она вычисляется из размера области
-    данных автоматически.
-- name: meta_block_size
-  type: int
-  default: 4096
-  info: |
-    Physical block size of the metadata device. 4096 for most current
-    HDDs and SSDs.
-  info_ru: |
-    Размер физического блока устройства метаданных. 4096 для большинства
-    современных SSD и HDD.
-- name: journal_block_size
-  type: int
-  default: 4096
-  info: |
-    Physical block size of the journal device. Must be a multiple of
-    `disk_alignment`. 4096 for most current HDDs and SSDs.
-  info_ru: |
-    Размер физического блока устройства журнала. Должен быть кратен
-    `disk_alignment`. 4096 для большинства современных SSD и HDD.
-- name: disable_data_fsync
-  type: bool
-  default: false
-  info: |
-    Do not issue fsyncs to the data device, i.e. do not flush its cache.
-    Safe ONLY if your data device has write-through cache. If you disable
-    the cache yourself using `hdparm` or `scsi_disk/cache_type` then make sure
-    that the cache disable command is run every time before starting Vitastor
-    OSD, for example, in the systemd unit. See also `immediate_commit` option
-    for the instructions to disable cache and how to benefit from it.
-  info_ru: |
-    Не отправлять fsync-и устройству данных, т.е. не сбрасывать его кэш.
-    Безопасно, ТОЛЬКО если ваше устройство данных имеет кэш со сквозной
-    записью (write-through). Если вы отключаете кэш через `hdparm` или
-    `scsi_disk/cache_type`, то удостоверьтесь, что команда отключения кэша
-    выполняется перед каждым запуском Vitastor OSD, например, в systemd unit-е.
-    Смотрите также опцию `immediate_commit` для инструкций по отключению кэша
-    и о том, как из этого извлечь выгоду.
-- name: disable_meta_fsync
-  type: bool
-  default: false
-  info: |
-    Same as disable_data_fsync, but for the metadata device. If the metadata
-    device is not set or if the data device is used for the metadata the option
-    is ignored and disable_data_fsync value is used instead of it.
-  info_ru: |
-    То же, что disable_data_fsync, но для устройства метаданных. Если устройство
-    метаданных не задано или если оно равно устройству данных, значение опции
-    игнорируется и вместо него используется значение опции disable_data_fsync.
-- name: disable_journal_fsync
-  type: bool
-  default: false
-  info: |
-    Same as disable_data_fsync, but for the journal device. If the journal
-    device is not set or if the metadata device is used for the journal the
-    option is ignored and disable_meta_fsync value is used instead of it. If
-    the same device is used for data, metadata and journal the option is also
-    ignored and disable_data_fsync value is used instead of it.
-  info_ru: |
-    То же, что disable_data_fsync, но для устройства журнала. Если устройство
-    журнала не задано или если оно равно устройству метаданных, значение опции
-    игнорируется и вместо него используется значение опции disable_meta_fsync.
-    Если одно и то же устройство используется и под данные, и под журнал, и под
-    метаданные - значение опции также игнорируется и вместо него используется
-    значение опции disable_data_fsync.
-- name: disable_device_lock
-  type: bool
-  default: false
-  info: |
-    Do not lock data, metadata and journal block devices exclusively with
-    flock(). Though it's not recommended, but you can use it you want to run
-    multiple OSD with a single device and different offsets, without using
-    partitions.
-  info_ru: |
-    Не блокировать устройства данных, метаданных и журнала от открытия их
-    другими OSD с помощью flock(). Так делать не рекомендуется, но теоретически
-    вы можете это использовать, чтобы запускать несколько OSD на одном
-    устройстве с разными смещениями и без использования разделов.
-- name: disk_alignment
-  type: int
-  default: 4096
-  info: |
-    Required physical disk write alignment. Most current SSD and HDD drives
-    use 4 KB physical sectors even if they report 512 byte logical sector
-    size, so 4 KB is a good default setting.
-
-    Note, however, that physical sector size also affects WA, because with block
-    devices it's impossible to write anything smaller than a block. So, when
-    Vitastor has to write a single metadata entry that's only about 32 bytes in
-    size, it actually has to write the whole 4 KB sector.
-
-    Because of this it can actually be beneficial to use SSDs which work well
-    with 512 byte sectors and use 512 byte disk_alignment, journal_block_size
-    and meta_block_size. But the only SSD that may fit into this category is
-    Intel Optane (probably, not tested yet).
-
-    Clients don't need to be aware of disk_alignment, so it's not required to
-    put a modified value into etcd key /vitastor/config/global.
-  info_ru: |
-    Требуемое выравнивание записи на физические диски. Почти все современные
-    SSD и HDD диски используют 4 КБ физические секторы, даже если показывают
-    логический размер сектора 512 байт, поэтому 4 КБ - хорошее значение по
-    умолчанию.
-
-    Однако стоит понимать, что физический размер сектора тоже влияет на
-    избыточную запись (WA), потому что ничего меньше блока (сектора) на блочное
-    устройство записать невозможно. Таким образом, когда Vitastor-у нужно
-    записать на диск всего лишь одну 32-байтную запись метаданных, фактически
-    приходится перезаписывать 4 КБ сектор целиком.
-
-    Поэтому, на самом деле, может быть выгодно найти SSD, хорошо работающие с
-    меньшими, 512-байтными, блоками и использовать 512-байтные disk_alignment,
-    journal_block_size и meta_block_size. Однако единственные SSD, которые
-    теоретически могут попасть в эту категорию - это Intel Optane (но и это
-    пока не проверялось автором).
-
-    Клиентам не обязательно знать про disk_alignment, так что помещать значение
-    этого параметра в etcd в /vitastor/config/global не нужно.

docs/params/monitor.yml

@@ -1,65 +0,0 @@
-- name: etcd_mon_ttl
-  type: sec
-  min: 10
-  default: 30
-  info: Monitor etcd lease refresh interval in seconds
-  info_ru: Интервал обновления etcd резервации (lease) монитором
-- name: etcd_mon_timeout
-  type: ms
-  default: 1000
-  info: etcd request timeout used by monitor
-  info_ru: Таймаут выполнения запросов к etcd от монитора
-- name: etcd_mon_retries
-  type: int
-  default: 5
-  info: Maximum number of attempts for one monitor etcd request
-  info_ru: Максимальное число попыток выполнения запросов к etcd монитором
-- name: mon_change_timeout
-  type: ms
-  min: 100
-  default: 1000
-  info: Optimistic retry interval for monitor etcd modification requests
-  info_ru: Время повтора при коллизиях при запросах модификации в etcd, производимых монитором
-- name: mon_stats_timeout
-  type: ms
-  min: 100
-  default: 1000
-  info: |
-    Interval for monitor to wait before updating aggregated statistics in
-    etcd after receiving OSD statistics updates
-  info_ru: |
-    Интервал, который монитор ожидает при изменении статистики по отдельным
-    OSD перед обновлением агрегированной статистики в etcd
-- name: osd_out_time
-  type: sec
-  default: 600
-  info: |
-    Time after which a failed OSD is removed from the data distribution.
-    I.e. time which the monitor waits before attempting to restore data
-    redundancy using other OSDs.
-  info_ru: |
-    Время, через которое отключенный OSD исключается из распределения данных.
-    То есть, время, которое монитор ожидает перед попыткой переместить данные
-    на другие OSD и таким образом восстановить избыточность хранения.
-- name: placement_levels
-  type: json
-  default: '`{"host":100,"osd":101}`'
-  info: |
-    Levels for the placement tree. You can define arbitrary tree levels by
-    defining them in this parameter. The configuration parameter value should
-    contain a JSON object with level names as keys and integer priorities as
-    values.  Smaller priority means higher level in tree. For example,
-    "datacenter" should have smaller priority than "osd". "host" and "osd"
-    levels are always predefined and can't be removed. If one of them is not
-    present in the configuration, then it is defined with the default priority
-    (100 for "host", 101 for "osd").
-  info_ru: |
-    Определения уровней для дерева размещения OSD. Вы можете определять
-    произвольные уровни, помещая их в данный параметр конфигурации. Значение
-    параметра должно содержать JSON-объект, ключи которого будут являться
-    названиями уровней, а значения - целочисленными приоритетами. Меньшие
-    приоритеты соответствуют верхним уровням дерева. Например, уровень
-    "датацентр" должен иметь меньший приоритет, чем "OSD". Уровни с названиями
-    "host" и "osd" являются предопределёнными и не могут быть удалены. Если
-    один из них отсутствует в конфигурации, он доопределяется с приоритетом по
-    умолчанию (100 для уровня "host", 101 для "osd").

docs/params/network.yml

@@ -1,234 +0,0 @@
-- name: tcp_header_buffer_size
-  type: int
-  default: 65536
-  info: |
-    Size of the buffer used to read data using an additional copy. Vitastor
-    packet headers are 128 bytes, payload is always at least 4 KB, so it is
-    usually beneficial to try to read multiple packets at once even though
-    it requires to copy the data an additional time. The rest of each packet
-    is received without an additional copy. You can try to play with this
-    parameter and see how it affects random iops and linear bandwidth if you
-    want.
-  info_ru: |
-    Размер буфера для чтения данных с дополнительным копированием. Пакеты
-    Vitastor содержат 128-байтные заголовки, за которыми следуют данные размером
-    от 4 КБ и для мелких операций ввода-вывода обычно выгодно за 1 вызов читать
-    сразу несколько пакетов, даже не смотря на то, что это требует лишний раз
-    скопировать данные. Часть каждого пакета за пределами значения данного
-    параметра читается без дополнительного копирования. Вы можете попробовать
-    поменять этот параметр и посмотреть, как он влияет на производительность
-    случайного и линейного доступа.
-- name: use_sync_send_recv
-  type: bool
-  default: false
-  info: |
-    If true, synchronous send/recv syscalls are used instead of io_uring for
-    socket communication. Useless for OSDs because they require io_uring anyway,
-    but may be required for clients with old kernel versions.
-  info_ru: |
-    Если установлено в истину, то вместо io_uring для передачи данных по сети
-    будут использоваться обычные синхронные системные вызовы send/recv. Для OSD
-    это бессмысленно, так как OSD в любом случае нуждается в io_uring, но, в
-    принципе, это может применяться для клиентов со старыми версиями ядра.
-- name: use_rdma
-  type: bool
-  default: true
-  info: |
-    Try to use RDMA for communication if it's available. Disable if you don't
-    want Vitastor to use RDMA. RDMA increases the performance, but TCP-only
-    clients can still talk to an RDMA-enabled cluster, so you don't need to
-    make sure that all clients support RDMA when enabling it.
-  info_ru: |
-    Пытаться использовать RDMA для связи при наличии доступных устройств.
-    Отключите, если вы не хотите, чтобы Vitastor использовал RDMA.
-    RDMA улучшает производительность, но 
-    Клиенты и клиентов and TCP-only clients in the cluster at the
-    same time - TCP-only clients are still able to use an RDMA-enabled cluster.
-- name: rdma_device
-  type: string
-  info: |
-    RDMA device name to use for Vitastor OSD communications (for example,
-    "rocep5s0f0"). Please note that if your RDMA device doesn't support
-    Implicit ODP (Implicit On-Demand Paging) then all Vitastor OSDs and clients
-    will have to use mlockall() to lock all application memory to use RDMA.
-    In case of the native Vitastor QEMU driver with RDMA, all virtual machine
-    memory will be locked if your RDMA device doesn't support Implicit ODP.
-
-    Notably, Mellanox ConnectX-3 and older adapters don't support Implicit ODP,
-    while ConnectX-4 and newer do. Run `ibv_devinfo -v` as root to list
-    available RDMA devices and their features.
-  info_ru: |
-    Название RDMA-устройства для связи с Vitastor OSD (например, "rocep5s0f0").
-    Имейте в виду, что если ваше устройство не поддерживает Implicit ODP
-    (Implicit On-Demand Paging), то все OSD и клиенты Vitastor будут вынуждены
-    блокировать всю память приложения с помощью mlockall(), чтобы задействовать
-    RDMA. В случае нативного QEMU-драйвера это будет означать, что при
-    использовании RDMA на устройстве без поддержки Implicit ODP блокироваться
-    от выгрузки будет вся память виртуальных машин.
-
-    В случае с адаптерами Mellanox Implicit ODP поддерживается начиная с
-    ConnectX-4. ConnectX-3 и более старые адаптеры не поддерживают Implicit ODP.
-    Чтобы посмотреть список своих RDMA-устройств и их возможностей, запустите
-    `ibv_devinfo -v` от имени суперпользователя.
-- name: rdma_port_num
-  type: int
-  default: 1
-  info: |
-    RDMA device port number to use. Only for devices that have more than 1 port.
-    See `phys_port_cnt` in `ibv_devinfo -v` output to determine how many ports
-    your device has.
-  info_ru: |
-    Номер порта RDMA-устройства, который следует использовать. Имеет смысл
-    только для устройств, у которых более 1 порта. Чтобы узнать, сколько портов
-    у вашего адаптера, посмотрите `phys_port_cnt` в выводе команды
-    `ibv_devinfo -v`.
-- name: rdma_gid_index
-  type: int
-  default: 0
-  info: |
-    Global address identifier index of the RDMA device to use. Different GID
-    indexes may correspond to different protocols like RoCEv1, RoCEv2 and iWARP.
-    Search for "GID" in `ibv_devinfo -v` output to determine which GID index
-    you need.
-
-    **IMPORTANT:** If you want to use RoCEv2 (as recommended) then the correct
-    rdma_gid_index is usually 1 (IPv6) or 3 (IPv4).
-  info_ru: |
-    Номер глобального идентификатора адреса RDMA-устройства, который следует
-    использовать. Разным gid_index могут соответствовать разные протоколы связи:
-    RoCEv1, RoCEv2, iWARP. Чтобы понять, какой нужен вам - смотрите строчки со
-    словом "GID" в выводе команды `ibv_devinfo -v`.
-
-    **ВАЖНО:** Если вы хотите использовать RoCEv2 (как мы и рекомендуем), то
-    правильный rdma_gid_index, как правило, 1 (IPv6) или 3 (IPv4).
-- name: rdma_mtu
-  type: int
-  default: 4096
-  info: |
-    RDMA Path MTU to use. Must be 1024, 2048 or 4096. There is usually no
-    sense to change it from the default 4096.
-  info_ru: |
-    Максимальная единица передачи (Path MTU) для RDMA. Должно быть равно 1024,
-    2048 или 4096. Обычно нет смысла менять значение по умолчанию, равное 4096.
-- name: rdma_max_sge
-  type: int
-  default: 128
-  info: |
-    Maximum number of scatter/gather entries to use for RDMA. OSDs negotiate
-    the actual value when establishing connection anyway, so it's usually not
-    required to change this parameter.
-  info_ru: |
-    Максимальное число записей разделения/сборки (scatter/gather) для RDMA.
-    OSD в любом случае согласовывают реальное значение при установке соединения,
-    так что менять этот параметр обычно не нужно.
-- name: rdma_max_msg
-  type: int
-  default: 1048576
-  info: Maximum size of a single RDMA send or receive operation in bytes.
-  info_ru: Максимальный размер одной RDMA-операции отправки или приёма.
-- name: rdma_max_recv
-  type: int
-  default: 8
-  info: |
-    Maximum number of parallel RDMA receive operations. Note that this number
-    of receive buffers `rdma_max_msg` in size are allocated for each client,
-    so this setting actually affects memory usage. This is because RDMA receive
-    operations are (sadly) still not zero-copy in Vitastor. It may be fixed in
-    later versions.
-  info_ru: |
-    Максимальное число параллельных RDMA-операций получения данных. Следует
-    иметь в виду, что данное число буферов размером `rdma_max_msg` выделяется
-    для каждого подключённого клиентского соединения, так что данная настройка
-    влияет на потребление памяти. Это так потому, что RDMA-приём данных в
-    Vitastor, увы, всё равно не является zero-copy, т.е. всё равно 1 раз
-    копирует данные в памяти. Данная особенность, возможно, будет исправлена в
-    более новых версиях Vitastor.
-- name: peer_connect_interval
-  type: sec
-  min: 1
-  default: 5
-  info: Interval before attempting to reconnect to an unavailable OSD.
-  info_ru: Время ожидания перед повторной попыткой соединиться с недоступным OSD.
-- name: peer_connect_timeout
-  type: sec
-  min: 1
-  default: 5
-  info: Timeout for OSD connection attempts.
-  info_ru: Максимальное время ожидания попытки соединения с OSD.
-- name: osd_idle_timeout
-  type: sec
-  min: 1
-  default: 5
-  info: |
-    OSD connection inactivity time after which clients and other OSDs send
-    keepalive requests to check state of the connection.
-  info_ru: |
-    Время неактивности соединения с OSD, после которого клиенты или другие OSD
-    посылают запрос проверки состояния соединения.
-- name: osd_ping_timeout
-  type: sec
-  min: 1
-  default: 5
-  info: |
-    Maximum time to wait for OSD keepalive responses. If an OSD doesn't respond
-    within this time, the connection to it is dropped and a reconnection attempt
-    is scheduled.
-  info_ru: |
-    Максимальное время ожидания ответа на запрос проверки состояния соединения.
-    Если OSD не отвечает за это время, соединение отключается и производится
-    повторная попытка соединения.
-- name: up_wait_retry_interval
-  type: ms
-  min: 50
-  default: 500
-  info: |
-    OSDs respond to clients with a special error code when they receive I/O
-    requests for a PG that's not synchronized and started. This parameter sets
-    the time for the clients to wait before re-attempting such I/O requests.
-  info_ru: |
-    Когда OSD получают от клиентов запросы ввода-вывода, относящиеся к не
-    поднятым на данный момент на них PG, либо к PG в процессе синхронизации,
-    они отвечают клиентам специальным кодом ошибки, означающим, что клиент
-    должен некоторое время подождать перед повторением запроса. Именно это время
-    ожидания задаёт данный параметр.
-- name: max_etcd_attempts
-  type: int
-  default: 5
-  info: |
-    Maximum number of attempts for etcd requests which can't be retried
-    indefinitely.
-  info_ru: |
-    Максимальное число попыток выполнения запросов к etcd для тех запросов,
-    которые нельзя повторять бесконечно.
-- name: etcd_quick_timeout
-  type: ms
-  default: 1000
-  info: |
-    Timeout for etcd requests which should complete quickly, like lease refresh.
-  info_ru: |
-    Максимальное время выполнения запросов к etcd, которые должны завершаться
-    быстро, таких, как обновление резервации (lease).
-- name: etcd_slow_timeout
-  type: ms
-  default: 5000
-  info: Timeout for etcd requests which are allowed to wait for some time.
-  info_ru: |
-    Максимальное время выполнения запросов к etcd, для которых не обязательно
-    гарантировать быстрое выполнение.
-- name: etcd_keepalive_timeout
-  type: sec
-  default: max(30, etcd_report_interval*2)
-  info: |
-    Timeout for etcd connection HTTP Keep-Alive. Should be higher than
-    etcd_report_interval to guarantee that keepalive actually works.
-  info_ru: |
-    Таймаут для HTTP Keep-Alive в соединениях к etcd. Должен быть больше, чем
-    etcd_report_interval, чтобы keepalive гарантированно работал.
-- name: etcd_ws_keepalive_timeout
-  type: sec
-  default: 30
-  info: |
-    etcd websocket ping interval required to keep the connection alive and
-    detect disconnections quickly.
-  info_ru: |
-    Интервал проверки живости вебсокет-подключений к etcd.

docs/params/osd.yml

@@ -1,341 +0,0 @@
-- name: etcd_report_interval
-  type: sec
-  default: 5
-  info: |
-    Interval at which OSDs report their state to etcd. Affects OSD lease time
-    and thus the failover speed. Lease time is equal to this parameter value
-    plus max_etcd_attempts * etcd_quick_timeout because it should be guaranteed
-    that every OSD always refreshes its lease in time.
-  info_ru: |
-    Интервал, с которым OSD обновляет своё состояние в etcd. Значение параметра
-    влияет на время резервации (lease) OSD и поэтому на скорость переключения
-    при падении OSD. Время lease равняется значению этого параметра плюс
-    max_etcd_attempts * etcd_quick_timeout.
-- name: run_primary
-  type: bool
-  default: true
-  info: |
-    Start primary OSD logic on this OSD. As of now, can be turned off only for
-    debugging purposes. It's possible to implement additional feature for the
-    monitor which may allow to separate primary and secondary OSDs, but it's
-    unclear why anyone could need it, so it's not implemented.
-  info_ru: |
-    Запускать логику первичного OSD на данном OSD. На данный момент отключать
-    эту опцию может иметь смысл только в целях отладки. В теории, можно
-    реализовать дополнительный режим для монитора, который позволит отделять
-    первичные OSD от вторичных, но пока не понятно, зачем это может кому-то
-    понадобиться, поэтому это не реализовано.
-- name: osd_network
-  type: string or array of strings
-  type_ru: строка или массив строк
-  info: |
-    Network mask of the network (IPv4 or IPv6) to use for OSDs. Note that
-    although it's possible to specify multiple networks here, this does not
-    mean that OSDs will create multiple listening sockets - they'll only
-    pick the first matching address of an UP + RUNNING interface. Separate
-    networks for cluster and client connections are also not implemented, but
-    they are mostly useless anyway, so it's not a big deal.
-  info_ru: |
-    Маска подсети (IPv4 или IPv6) для использования для соединений с OSD.
-    Имейте в виду, что хотя сейчас и можно передать в этот параметр несколько
-    подсетей, это не означает, что OSD будут создавать несколько слушающих
-    сокетов - они лишь будут выбирать адрес первого поднятого (состояние UP +
-    RUNNING), подходящий под заданную маску. Также не реализовано разделение
-    кластерной и публичной сетей OSD. Правда, от него обычно всё равно довольно
-    мало толку, так что особенной проблемы в этом нет.
-- name: bind_address
-  type: string
-  default: "0.0.0.0"
-  info: |
-    Instead of the network mask, you can also set OSD listen address explicitly
-    using this parameter. May be useful if you want to start OSDs on interfaces
-    that are not UP + RUNNING.
-  info_ru: |
-    Этим параметром можно явным образом задать адрес, на котором будет ожидать
-    соединений OSD (вместо использования маски подсети). Может быть полезно,
-    например, чтобы запускать OSD на неподнятых интерфейсах (не UP + RUNNING).
-- name: bind_port
-  type: int
-  info: |
-    By default, OSDs pick random ports to use for incoming connections
-    automatically. With this option you can set a specific port for a specific
-    OSD by hand.
-  info_ru: |
-    По умолчанию OSD сами выбирают случайные порты для входящих подключений.
-    С помощью данной опции вы можете задать порт для отдельного OSD вручную.
-- name: autosync_interval
-  type: sec
-  default: 5
-  info: |
-    Time interval at which automatic fsyncs/flushes are issued by each OSD when
-    the immediate_commit mode if disabled. fsyncs are required because without
-    them OSDs quickly fill their journals, become unable to clear them and
-    stall. Also this option limits the amount of recent uncommitted changes
-    which OSDs may lose in case of a power outage in case when clients don't
-    issue fsyncs at all.
-  info_ru: |
-    Временной интервал отправки автоматических fsync-ов (операций очистки кэша)
-    каждым OSD для случая, когда режим immediate_commit отключён. fsync-и нужны
-    OSD, чтобы успевать очищать журнал - без них OSD быстро заполняют журналы и
-    перестают обрабатывать операции записи. Также эта опция ограничивает объём
-    недавних незафиксированных изменений, которые OSD могут терять при
-    отключении питания, если клиенты вообще не отправляют fsync.
-- name: autosync_writes
-  type: int
-  default: 128
-  info: |
-    Same as autosync_interval, but sets the maximum number of uncommitted write
-    operations before issuing an fsync operation internally.
-  info_ru: |
-    Аналогично autosync_interval, но задаёт не временной интервал, а
-    максимальное количество незафиксированных операций записи перед
-    принудительной отправкой fsync-а.
-- name: recovery_queue_depth
-  type: int
-  default: 4
-  info: |
-    Maximum recovery operations per one primary OSD at any given moment of time.
-    Currently it's the only parameter available to tune the speed or recovery
-    and rebalancing, but it's planned to implement more.
-  info_ru: |
-    Максимальное число операций восстановления на одном первичном OSD в любой
-    момент времени. На данный момент единственный параметр, который можно менять
-    для ускорения или замедления восстановления и перебалансировки данных, но
-    в планах реализация других параметров.
-- name: recovery_sync_batch
-  type: int
-  default: 16
-  info: Maximum number of recovery operations before issuing an additional fsync.
-  info_ru: Максимальное число операций восстановления перед дополнительным fsync.
-- name: readonly
-  type: bool
-  default: false
-  info: |
-    Read-only mode. If this is enabled, an OSD will never issue any writes to
-    the underlying device. This may be useful for recovery purposes.
-  info_ru: |
-    Режим "только чтение". Если включить этот режим, OSD не будет писать ничего
-    на диск. Может быть полезно в целях восстановления.
-- name: no_recovery
-  type: bool
-  default: false
-  info: |
-    Disable automatic background recovery of objects. Note that it doesn't
-    affect implicit recovery of objects happening during writes - a write is
-    always made to a full set of at least pg_minsize OSDs.
-  info_ru: |
-    Отключить автоматическое фоновое восстановление объектов. Обратите внимание,
-    что эта опция не отключает восстановление объектов, происходящее при
-    записи - запись всегда производится в полный набор из как минимум pg_minsize
-    OSD.
-- name: no_rebalance
-  type: bool
-  default: false
-  info: |
-    Disable background movement of data between different OSDs. Disabling it
-    means that PGs in the `has_misplaced` state will be left in it indefinitely.
-  info_ru: |
-    Отключить фоновое перемещение объектов между разными OSD. Отключение
-    означает, что PG, находящиеся в состоянии `has_misplaced`, будут оставлены
-    в нём на неопределённый срок.
-- name: print_stats_interval
-  type: sec
-  default: 3
-  info: |
-    Time interval at which OSDs print simple human-readable operation
-    statistics on stdout.
-  info_ru: |
-    Временной интервал, с которым OSD печатают простую человекочитаемую
-    статистику выполнения операций в стандартный вывод.
-- name: slow_log_interval
-  type: sec
-  default: 10
-  info: |
-    Time interval at which OSDs dump slow or stuck operations on stdout, if
-    they're any. Also it's the time after which an operation is considered
-    "slow".
-  info_ru: |
-    Временной интервал, с которым OSD выводят в стандартный вывод список
-    медленных или зависших операций, если таковые имеются. Также время, при
-    превышении которого операция считается "медленной".
-- name: max_write_iodepth
-  type: int
-  default: 128
-  info: |
-    Parallel client write operation limit per one OSD. Operations that exceed
-    this limit are pushed to a temporary queue instead of being executed
-    immediately.
-  info_ru: |
-    Максимальное число одновременных клиентских операций записи на один OSD.
-    Операции, превышающие этот лимит, не исполняются сразу, а сохраняются во
-    временной очереди.
-- name: min_flusher_count
-  type: int
-  default: 1
-  info: |
-    Flusher is a micro-thread that moves data from the journal to the data
-    area of the device. Their number is auto-tuned between minimum and maximum.
-    Minimum number is set by this parameter.
-  info_ru: |
-    Flusher - это микро-поток (корутина), которая копирует данные из журнала в
-    основную область устройства данных. Их число настраивается динамически между
-    минимальным и максимальным значением. Этот параметр задаёт минимальное число.
-- name: max_flusher_count
-  type: int
-  default: 256
-  info: |
-    Maximum number of journal flushers (see above min_flusher_count).
-  info_ru: |
-    Максимальное число микро-потоков очистки журнала (см. выше min_flusher_count).
-- name: inmemory_metadata
-  type: bool
-  default: true
-  info: |
-    This parameter makes Vitastor always keep metadata area of the block device
-    in memory. It's required for good performance because it allows to avoid
-    additional read-modify-write cycles during metadata modifications. Metadata
-    area size is currently roughly 224 MB per 1 TB of data. You can turn it off
-    to reduce memory usage by this value, but it will hurt performance. This
-    restriction is likely to be removed in the future along with the upgrade
-    of the metadata storage scheme.
-  info_ru: |
-    Данный параметр заставляет Vitastor всегда держать область метаданных диска
-    в памяти. Это нужно, чтобы избегать дополнительных операций чтения с диска
-    при записи. Размер области метаданных на данный момент составляет примерно
-    224 МБ на 1 ТБ данных. При включении потребление памяти снизится примерно
-    на эту величину, но при этом также снизится и производительность. В будущем,
-    после обновления схемы хранения метаданных, это ограничение, скорее всего,
-    будет ликвидировано.
-- name: inmemory_journal
-  type: bool
-  default: true
-  info: |
-    This parameter make Vitastor always keep journal area of the block
-    device in memory. Turning it off will, again, reduce memory usage, but
-    hurt performance because flusher coroutines will have to read data from
-    the disk back before copying it into the main area. The memory usage benefit
-    is typically very small because it's sufficient to have 16-32 MB journal
-    for SSD OSDs. However, in theory it's possible that you'll want to turn it
-    off for hybrid (HDD+SSD) OSDs with large journals on quick devices.
-  info_ru: |
-    Данный параметр заставляет Vitastor всегда держать в памяти журналы OSD.
-    Отключение параметра, опять же, снижает потребление памяти, но ухудшает
-    производительность, так как для копирования данных из журнала в основную
-    область устройства OSD будут вынуждены читать их обратно с диска. Выигрыш
-    по памяти при этом обычно крайне низкий, так как для SSD OSD обычно
-    достаточно 16- или 32-мегабайтного журнала. Однако в теории отключение
-    параметра может оказаться полезным для гибридных OSD (HDD+SSD) с большими
-    журналами, расположенными на быстром по сравнению с HDD устройстве.
-- name: journal_sector_buffer_count
-  type: int
-  default: 32
-  info: |
-    Maximum number of buffers that can be used for writing journal metadata
-    blocks. The only situation when you should increase it to a larger value
-    is when you enable journal_no_same_sector_overwrites. In this case set
-    it to, for example, 1024.
-  info_ru: |
-    Максимальное число буферов, разрешённых для использования под записываемые
-    в журнал блоки метаданных. Единственная ситуация, в которой этот параметр
-    нужно менять - это если вы включаете journal_no_same_sector_overwrites. В
-    этом случае установите данный параметр, например, в 1024.
-- name: journal_no_same_sector_overwrites
-  type: bool
-  default: false
-  info: |
-    Enable this option for SSDs like Intel D3-S4510 and D3-S4610 which REALLY
-    don't like when a program overwrites the same sector multiple times in a
-    row and slow down significantly (from 25000+ iops to ~3000 iops). When
-    this option is set, Vitastor will always move to the next sector of the
-    journal after writing it instead of possibly overwriting it the second time.
-  info_ru: |
-    Включайте данную опцию для SSD вроде Intel D3-S4510 и D3-S4610, которые
-    ОЧЕНЬ не любят, когда ПО перезаписывает один и тот же сектор несколько раз
-    подряд. Такие SSD при многократной перезаписи одного и того же сектора
-    сильно замедляются - условно, с 25000 и более iops до 3000 iops. Когда
-    данная опция установлена, Vitastor всегда переходит к следующему сектору
-    журнала после записи вместо потенциально повторной перезаписи того же
-    самого сектора.
-- name: throttle_small_writes
-  type: bool
-  default: false
-  info: |
-    Enable soft throttling of small journaled writes. Useful for hybrid OSDs
-    with fast journal/metadata devices and slow data devices. The idea is that
-    small writes complete very quickly because they're first written to the
-    journal device, but moving them to the main device is slow. So if an OSD
-    allows clients to issue a lot of small writes it will perform very good
-    for several seconds and then the journal will fill up and the performance
-    will drop to almost zero. Throttling is meant to prevent this problem by
-    artifically slowing quick writes down based on the amount of free space in
-    the journal. When throttling is used, the performance of small writes will
-    decrease smoothly instead of abrupt drop at the moment when the journal
-    fills up.
-  info_ru: |
-    Разрешить мягкое ограничение скорости журналируемой записи. Полезно для
-    гибридных OSD с быстрыми устройствами метаданных и медленными устройствами
-    данных. Идея заключается в том, что мелкие записи в этой ситуации могут
-    завершаться очень быстро, так как они изначально записываются на быстрое
-    журнальное устройство (SSD). Но перемещать их потом на основное медленное
-    устройство долго. Поэтому если OSD быстро примет от клиентов очень много
-    мелких операций записи, он быстро заполнит свой журнал, после чего
-    производительность записи резко упадёт практически до нуля. Ограничение
-    скорости записи призвано решить эту проблему с помощью искусственного
-    замедления операций записи на основании объёма свободного места в журнале.
-    Когда эта опция включена, производительность мелких операций записи будет
-    снижаться плавно, а не резко в момент окончательного заполнения журнала.
-- name: throttle_target_iops
-  type: int
-  default: 100
-  info: |
-    Target maximum number of throttled operations per second under the condition
-    of full journal. Set it to approximate random write iops of your data devices
-    (HDDs).
-  info_ru: |
-    Расчётное максимальное число ограничиваемых операций в секунду при условии
-    отсутствия свободного места в журнале. Устанавливайте приблизительно равным
-    максимальной производительности случайной записи ваших устройств данных
-    (HDD) в операциях в секунду.
-- name: throttle_target_mbs
-  type: int
-  default: 100
-  info: |
-    Target maximum bandwidth in MB/s of throttled operations per second under
-    the condition of full journal. Set it to approximate linear write
-    performance of your data devices (HDDs).
-  info_ru: |
-    Расчётный максимальный размер в МБ/с ограничиваемых операций в секунду при
-    условии отсутствия свободного места в журнале. Устанавливайте приблизительно
-    равным максимальной производительности линейной записи ваших устройств
-    данных (HDD).
-- name: throttle_target_parallelism
-  type: int
-  default: 1
-  info: |
-    Target maximum parallelism of throttled operations under the condition of
-    full journal. Set it to approximate internal parallelism of your data
-    devices (1 for HDDs, 4-8 for SSDs).
-  info_ru: |
-    Расчётный максимальный параллелизм ограничиваемых операций в секунду при
-    условии отсутствия свободного места в журнале. Устанавливайте приблизительно
-    равным внутреннему параллелизму ваших устройств данных (1 для HDD, 4-8
-    для SSD).
-- name: throttle_threshold_us
-  type: us
-  default: 50
-  info: |
-    Minimal computed delay to be applied to throttled operations. Usually
-    doesn't need to be changed.
-  info_ru: |
-    Минимальная применимая к ограничиваемым операциям задержка. Обычно не
-    требует изменений.
-- name: osd_memlock
-  type: bool
-  default: false
-  info: >
-    Lock all OSD memory to prevent it from being unloaded into swap with
-    mlockall(). Requires sufficient ulimit -l (max locked memory).
-  info_ru: >
-    Блокировать всю память OSD с помощью mlockall, чтобы запретить её выгрузку
-    в пространство подкачки. Требует достаточного значения ulimit -l (лимита
-    заблокированной памяти).

mon/lp-optimizer.js

@@ -50,7 +50,7 @@ async function lp_solve(text)
     return { score, vars };
 }
 
-async function optimize_initial({ osd_tree, pg_count, pg_size = 3, pg_minsize = 2, max_combinations = 10000, parity_space = 1, ordered = false })
+async function optimize_initial({ osd_tree, pg_count, pg_size = 3, pg_minsize = 2, max_combinations = 10000, parity_space = 1, round_robin = false })
 {
     if (!pg_count || !osd_tree)
     {
@@ -92,7 +92,7 @@ async function optimize_initial({ osd_tree, pg_count, pg_size = 3, pg_minsize =
         console.log(lp);
         throw new Error('Problem is infeasible or unbounded - is it a bug?');
     }
-    const int_pgs = make_int_pgs(lp_result.vars, pg_count, ordered);
+    const int_pgs = make_int_pgs(lp_result.vars, pg_count, round_robin);
     const eff = pg_list_space_efficiency(int_pgs, all_weights, pg_minsize, parity_space);
     const res = {
         score: lp_result.score,
@@ -140,20 +140,20 @@ function make_int_pgs(weights, pg_count, round_robin)
     return int_pgs;
 }
 
-function calc_intersect_weights(old_pg_size, pg_size, pg_count, prev_weights, all_pgs, ordered)
+function calc_intersect_weights(pg_size, pg_count, prev_weights, all_pgs)
 {
     const move_weights = {};
-    if ((1 << old_pg_size) < pg_count)
+    if ((1 << pg_size) < pg_count)
     {
         const intersect = {};
         for (const pg_name in prev_weights)
         {
             const pg = pg_name.substr(3).split(/_/);
-            for (let omit = 1; omit < (1 << old_pg_size); omit++)
+            for (let omit = 1; omit < (1 << pg_size); omit++)
             {
                 let pg_omit = [ ...pg ];
-                let intersect_count = old_pg_size;
-                for (let i = 0; i < old_pg_size; i++)
+                let intersect_count = pg_size;
+                for (let i = 0; i < pg_size; i++)
                 {
                     if (omit & (1 << i))
                     {
@@ -161,8 +161,6 @@ function calc_intersect_weights(old_pg_size, pg_size, pg_count, prev_weights, al
                         intersect_count--;
                     }
                 }
-                if (!ordered)
-                    pg_omit = pg_omit.filter(n => n).sort();
                 pg_omit = pg_omit.join(':');
                 intersect[pg_omit] = Math.max(intersect[pg_omit] || 0, intersect_count);
             }
@@ -176,10 +174,10 @@ function calc_intersect_weights(old_pg_size, pg_size, pg_count, prev_weights, al
                 for (let i = 0; i < pg_size; i++)
                 {
                     if (omit & (1 << i))
+                    {
                         pg_omit[i] = '';
+                    }
                 }
-                if (!ordered)
-                    pg_omit = pg_omit.filter(n => n).sort();
                 pg_omit = pg_omit.join(':');
                 max_int = Math.max(max_int, intersect[pg_omit] || 0);
             }
@@ -188,18 +186,15 @@ function calc_intersect_weights(old_pg_size, pg_size, pg_count, prev_weights, al
     }
     else
     {
-        const prev_pg_hashed = Object.keys(prev_weights).map(pg_name => pg_name
-            .substr(3).split(/_/).reduce((a, c, i) => { a[c] = i+1; return a; }, {}));
+        const prev_pg_hashed = Object.keys(prev_weights).map(pg_name => pg_name.substr(3).split(/_/).reduce((a, c) => { a[c] = 1; return a; }, {}));
         for (const pg of all_pgs)
         {
             if (!prev_weights['pg_'+pg.join('_')])
             {
                 let max_int = 0;
-                for (const prev_hash of prev_pg_hashed)
+                for (const prev_hash in prev_pg_hashed)
                 {
-                    const intersect_count = ordered
-                        ? pg.reduce((a, osd, i) => a + (prev_hash[osd] == 1+i ? 1 : 0), 0)
-                        : pg.reduce((a, osd, i) => a + (prev_hash[osd] ? 1 : 0), 0);
+                    const intersect_count = pg.reduce((a, osd) => a + (prev_hash[osd] ? 1 : 0), 0);
                     if (max_int < intersect_count)
                     {
                         max_int = intersect_count;
@@ -248,7 +243,7 @@ function add_valid_previous(osd_tree, prev_weights, all_pgs)
 }
 
 // Try to minimize data movement
-async function optimize_change({ prev_pgs: prev_int_pgs, osd_tree, pg_size = 3, pg_minsize = 2, max_combinations = 10000, parity_space = 1, ordered = false })
+async function optimize_change({ prev_pgs: prev_int_pgs, osd_tree, pg_size = 3, pg_minsize = 2, max_combinations = 10000, parity_space = 1 })
 {
     if (!osd_tree)
     {
@@ -271,13 +266,9 @@ async function optimize_change({ prev_pgs: prev_int_pgs, osd_tree, pg_size = 3,
             prev_pg_per_osd[osd].push([ pg_name, (i >= pg_minsize ? parity_space : 1) ]);
         }
     }
-    const old_pg_size = prev_int_pgs[0].length;
     // Get all combinations
     let all_pgs = random_combinations(osd_tree, pg_size, max_combinations, parity_space > 1);
-    if (old_pg_size == pg_size)
-    {
-        add_valid_previous(osd_tree, prev_weights, all_pgs);
-    }
+    add_valid_previous(osd_tree, prev_weights, all_pgs);
     all_pgs = Object.values(all_pgs);
     const pg_per_osd = {};
     for (const pg of all_pgs)
@@ -291,7 +282,7 @@ async function optimize_change({ prev_pgs: prev_int_pgs, osd_tree, pg_size = 3,
         }
     }
     // Penalize PGs based on their similarity to old PGs
-    const move_weights = calc_intersect_weights(old_pg_size, pg_size, pg_count, prev_weights, all_pgs, ordered);
+    const move_weights = calc_intersect_weights(pg_size, pg_count, prev_weights, all_pgs);
     // Calculate total weight - old PG weights
     const all_pg_names = all_pgs.map(pg => 'pg_'+pg.join('_'));
     const all_pgs_hash = all_pg_names.reduce((a, c) => { a[c] = true; return a; }, {});
@@ -302,6 +293,11 @@ async function optimize_change({ prev_pgs: prev_int_pgs, osd_tree, pg_size = 3,
     lp += 'max: '+all_pg_names.map(pg_name => (
         prev_weights[pg_name] ? `${pg_size+1}*add_${pg_name} - ${pg_size+1}*del_${pg_name}` : `${pg_size+1-move_weights[pg_name]}*${pg_name}`
     )).join(' + ')+';\n';
+    lp += all_pg_names
+        .map(pg_name => (prev_weights[pg_name] ? `add_${pg_name} - del_${pg_name}` : `${pg_name}`))
+        .join(' + ')+' = '+(pg_count
+            - Object.keys(prev_weights).reduce((a, old_pg_name) => (a + (all_pgs_hash[old_pg_name] ? prev_weights[old_pg_name] : 0)), 0)
+        )+';\n';
     for (const osd in pg_per_osd)
     {
         if (osd !== NO_OSD)
@@ -382,35 +378,11 @@ async function optimize_change({ prev_pgs: prev_int_pgs, osd_tree, pg_size = 3,
         {
             differs++;
         }
-    }
-    if (ordered)
-    {
-        for (let i = 0; i < pg_count; i++)
+        for (let j = 0; j < pg_size; j++)
         {
-            for (let j = 0; j < pg_size; j++)
+            if (new_pgs[i][j] != prev_int_pgs[i][j])
             {
-                if (new_pgs[i][j] != prev_int_pgs[i][j])
-                {
-                    osd_differs++;
-                }
-            }
-        }
-    }
-    else
-    {
-        for (let i = 0; i < pg_count; i++)
-        {
-            const old_map = prev_int_pgs[i].reduce((a, c) => { a[c] = (a[c]|0) + 1; return a; }, {});
-            for (let j = 0; j < pg_size; j++)
-            {
-                if ((0|old_map[new_pgs[i][j]]) > 0)
-                {
-                    old_map[new_pgs[i][j]]--;
-                }
-                else
-                {
-                    osd_differs++;
-                }
+                osd_differs++;
             }
         }
     }

mon/make-osd.sh

@@ -4,16 +4,18 @@
 # Copyright (c) Vitaliy Filippov, 2019+
 # License: MIT
 
-# USAGE:
-# 1) Put etcd_address and osd_network into /etc/vitastor/vitastor.conf. Example:
-#    {
-#        "etcd_address":["http://10.200.1.10:2379/v3","http://10.200.1.11:2379/v3","http://10.200.1.12:2379/v3"],
-#        "osd_network":"10.200.1.0/24"
-#    }
-# 2) Run ./make-osd.sh /dev/disk/by-partuuid/xxx [ /dev/disk/by-partuuid/yyy]...
+# USAGE: ./make-osd.sh /dev/disk/by-partuuid/xxx [ /dev/disk/by-partuuid/yyy]...
+
+IP_SUBSTR="10.200.1."
+ETCD_HOSTS="etcd0=http://10.200.1.10:2380,etcd1=http://10.200.1.11:2380,etcd2=http://10.200.1.12:2380"
 
 set -e -x
 
+IP=`ip -json a s | jq -r '.[].addr_info[] | select(.local | startswith("'$IP_SUBSTR'")) | .local'`
+[ "$IP" != "" ] || exit 1
+ETCD_MON=$(echo $ETCD_HOSTS | perl -pe 's/:2380/:2379/g; s/etcd\d*=//g;')
+D=`dirname $0`
+
 # Create OSDs on all passed devices
 for DEV in $*; do
 
@@ -37,6 +39,8 @@ LimitNOFILE=1048576
 LimitNPROC=1048576
 LimitMEMLOCK=infinity
 ExecStart=/usr/bin/vitastor-osd \\
+    --etcd_address $IP:2379/v3 \\
+    --bind_address $IP \\
     --osd_num $OSD_NUM \\
     --disable_data_fsync 1 \\
     --immediate_commit all \\

mon/mon-main.js

@@ -9,18 +9,17 @@ const options = {};
 
 for (let i = 2; i < process.argv.length; i++)
 {
-    if (process.argv[i] === '-h' || process.argv[i] === '--help')
-    {
-        console.error('USAGE: '+process.argv[0]+' '+process.argv[1]+' [--verbose 1]'+
-            ' [--etcd_address "http://127.0.0.1:2379,..."] [--config_file /etc/vitastor/vitastor.conf]'+
-            ' [--etcd_prefix "/vitastor"] [--etcd_start_timeout 5]');
-        process.exit();
-    }
-    else if (process.argv[i].substr(0, 2) == '--')
+    if (process.argv[i].substr(0, 2) == '--')
     {
         options[process.argv[i].substr(2)] = process.argv[i+1];
         i++;
     }
 }
 
-new Mon(options).start().catch(e => { console.error(e); process.exit(1); });
+if (!options.etcd_url)
+{
+    console.error('USAGE: '+process.argv[0]+' '+process.argv[1]+' --etcd_url "http://127.0.0.1:2379,..." --etcd_prefix "/vitastor" --etcd_start_timeout 5 [--verbose 1]');
+    process.exit();
+}
+
+new Mon(options).start().catch(e => { console.error(e); process.exit(); });

mon/mon.js

@@ -1,7 +1,6 @@
 // Copyright (c) Vitaliy Filippov, 2019+
 // License: VNPL-1.1 (see README.md for details)
 
-const fs = require('fs');
 const http = require('http');
 const crypto = require('crypto');
 const os = require('os');
@@ -83,15 +82,9 @@ const etcd_tree = {
             osd_idle_timeout: 5, // seconds. min: 1
             osd_ping_timeout: 5, // seconds. min: 1
             up_wait_retry_interval: 500, // ms. min: 50
-            max_etcd_attempts: 5,
-            etcd_quick_timeout: 1000, // ms
-            etcd_slow_timeout: 5000, // ms
-            etcd_keepalive_timeout: 30, // seconds, default is max(30, etcd_report_interval*2)
-            etcd_ws_keepalive_interval: 30, // seconds
             // osd
-            etcd_report_interval: 5, // seconds
+            etcd_report_interval: 5,
             run_primary: true,
-            osd_network: null, // "192.168.7.0/24" or an array of masks
             bind_address: "0.0.0.0",
             bind_port: 0,
             autosync_interval: 5,
@@ -104,7 +97,6 @@ const etcd_tree = {
             no_rebalance: false,
             print_stats_interval: 3,
             slow_log_interval: 10,
-            osd_memlock: false,
             // blockstore - fixed in superblock
             block_size,
             disk_alignment,
@@ -131,11 +123,6 @@ const etcd_tree = {
             inmemory_journal,
             journal_sector_buffer_count,
             journal_no_same_sector_overwrites,
-            throttle_small_writes: false,
-            throttle_target_iops: 100,
-            throttle_target_mbs: 100,
-            throttle_target_parallelism: 1,
-            throttle_threshold_us: 50,
         }, */
         global: {},
         /* node_placement: {
@@ -335,56 +322,24 @@ class Mon
 {
     constructor(config)
     {
-        this.die = (e) => this._die(e);
-        if (fs.existsSync(config.config_path||'/etc/vitastor/vitastor.conf'))
+        // FIXME: Maybe prefer local etcd
+        this.etcd_urls = [];
+        for (let url of config.etcd_url.split(/,/))
         {
-            config = {
-                ...JSON.parse(fs.readFileSync(config.config_path||'/etc/vitastor/vitastor.conf', { encoding: 'utf-8' })),
-                ...config,
-            };
+            let scheme = 'http';
+            url = url.trim().replace(/^(https?):\/\//, (m, m1) => { scheme = m1; return ''; });
+            if (!/\/[^\/]/.exec(url))
+                url += '/v3';
+            this.etcd_urls.push(scheme+'://'+url);
         }
-        this.parse_etcd_addresses(config.etcd_address||config.etcd_url);
         this.verbose = config.verbose || 0;
-        this.initConfig = config;
         this.config = {};
         this.etcd_prefix = config.etcd_prefix || '/vitastor';
         this.etcd_prefix = this.etcd_prefix.replace(/\/\/+/g, '/').replace(/^\/?(.*[^\/])\/?$/, '/$1');
         this.etcd_start_timeout = (config.etcd_start_timeout || 5) * 1000;
         this.state = JSON.parse(JSON.stringify(this.constructor.etcd_tree));
         this.signals_set = false;
-        this.ws = null;
-        this.ws_alive = false;
-        this.ws_keepalive_timer = null;
-        this.on_stop_cb = () => this.on_stop(0).catch(console.error);
-    }
-
-    parse_etcd_addresses(addrs)
-    {
-        const is_local_ip = this.local_ips(true).reduce((a, c) => { a[c] = true; return a; }, {});
-        this.etcd_local = [];
-        this.etcd_urls = [];
-        this.selected_etcd_url = null;
-        this.etcd_urls_to_try = [];
-        if (!(addrs instanceof Array))
-            addrs = addrs ? (''+(addrs||'')).split(/,/) : [];
-        if (!addrs.length)
-        {
-            console.error('Vitastor etcd address(es) not specified. Please set on the command line or in the config file');
-            process.exit(1);
-        }
-        for (let url of addrs)
-        {
-            let scheme = 'http';
-            url = url.trim().replace(/^(https?):\/\//, (m, m1) => { scheme = m1; return ''; });
-            const slash = url.indexOf('/');
-            const colon = url.indexOf(':');
-            const is_local = is_local_ip[colon >= 0 ? url.substr(0, colon) : (slash >= 0 ? url.substr(0, slash) : url)];
-            url = scheme+'://'+(slash >= 0 ? url : url+'/v3');
-            if (is_local)
-                this.etcd_local.push(url);
-            else
-                this.etcd_urls.push(url);
-        }
+        this.on_stop_cb = () => this.on_stop().catch(console.error);
     }
 
     async start()
@@ -397,7 +352,7 @@ class Mon
         for (const pool_id in this.state.config.pools)
         {
             if (!this.state.pool.stats[pool_id] ||
-                !Number(this.state.pool.stats[pool_id].pg_real_size))
+                !this.state.pool.stats[pool_id].pg_real_size)
             {
                 // Generate missing data in etcd
                 this.state.config.pgs.hash = null;
@@ -455,43 +410,6 @@ class Mon
         }
     }
 
-    pick_next_etcd()
-    {
-        if (this.selected_etcd_url)
-            return this.selected_etcd_url;
-        if (!this.etcd_urls_to_try || !this.etcd_urls_to_try.length)
-        {
-            this.etcd_urls_to_try = [ ...this.etcd_local ];
-            const others = [ ...this.etcd_urls ];
-            while (others.length)
-            {
-                const url = others.splice(0|(others.length*Math.random()), 1);
-                this.etcd_urls_to_try.push(url[0]);
-            }
-        }
-        this.selected_etcd_url = this.etcd_urls_to_try.shift();
-        return this.selected_etcd_url;
-    }
-
-    restart_watcher(cur_addr)
-    {
-        if (this.ws)
-        {
-            this.ws.close();
-            this.ws = null;
-        }
-        if (this.ws_keepalive_timer)
-        {
-            clearInterval(this.ws_keepalive_timer);
-            this.ws_keepalive_timer = null;
-        }
-        if (this.selected_etcd_url == cur_addr)
-        {
-            this.selected_etcd_url = null;
-        }
-        this.start_watcher(this.config.etcd_mon_retries).catch(this.die);
-    }
-
     async start_watcher(retries)
     {
         let retry = 0;
@@ -501,14 +419,12 @@ class Mon
         }
         while (retries < 0 || retry < retries)
         {
-            const cur_addr = this.pick_next_etcd();
-            const base = 'ws'+cur_addr.substr(4);
+            const base = 'ws'+this.etcd_urls[Math.floor(Math.random()*this.etcd_urls.length)].substr(4);
             const ok = await new Promise((ok, no) =>
             {
                 const timer_id = setTimeout(() =>
                 {
                     this.ws.close();
-                    this.ws = null;
                     ok(false);
                 }, this.config.etcd_mon_timeout);
                 this.ws = new WebSocket(base+'/watch');
@@ -526,9 +442,9 @@ class Mon
                 });
             });
             if (ok)
+            {
                 break;
-            if (this.selected_etcd_url == cur_addr)
-                this.selected_etcd_url = null;
+            }
             this.ws = null;
             retry++;
         }
@@ -536,22 +452,6 @@ class Mon
         {
             this.die('Failed to open etcd watch websocket');
         }
-        const cur_addr = this.selected_etcd_url;
-        this.ws_alive = true;
-        this.ws_keepalive_timer = setInterval(() =>
-        {
-            if (this.ws_alive)
-            {
-                this.ws_alive = false;
-                this.ws.send(JSON.stringify({ progress_request: {} }));
-            }
-            else
-            {
-                console.log('etcd websocket timed out, restarting it');
-                this.restart_watcher(cur_addr);
-            }
-        }, (Number(this.config.etcd_keepalive_interval) || 30)*1000);
-        this.ws.on('error', () => this.restart_watcher(cur_addr));
         this.ws.send(JSON.stringify({
             create_request: {
                 key: b64(this.etcd_prefix+'/'),
@@ -563,7 +463,6 @@ class Mon
         }));
         this.ws.on('message', (msg) =>
         {
-            this.ws_alive = true;
             let data;
             try
             {
@@ -572,25 +471,12 @@ class Mon
             catch (e)
             {
             }
-            if (!data || !data.result)
+            if (!data || !data.result || !data.result.events)
             {
-                console.error('Unknown message received from watch websocket: '+msg);
-            }
-            else if (data.result.canceled)
-            {
-                // etcd watch canceled
-                if (data.result.compact_revision)
+                if (!data || !data.result || !data.result.watch_id)
                 {
-                    // we may miss events if we proceed
-                    console.error('Revisions before '+data.result.compact_revision+' were compacted by etcd, exiting');
-                    this.on_stop(1);
+                    console.error('Garbage received from watch websocket: '+msg);
                 }
-                console.error('Watch canceled by etcd, reason: '+data.result.cancel_reason+', exiting');
-                this.on_stop(1);
-            }
-            else if (data.result.created)
-            {
-                // etcd watch created
             }
             else
             {
@@ -600,7 +486,7 @@ class Mon
                     console.log('Revision '+data.result.header.revision+' events: ');
                 }
                 this.etcd_watch_revision = BigInt(data.result.header.revision)+BigInt(1);
-                for (const e of data.result.events||[])
+                for (const e of data.result.events)
                 {
                     this.parse_kv(e.kv);
                     const key = e.kv.key.substr(this.etcd_prefix.length);
@@ -623,7 +509,7 @@ class Mon
                 }
                 if (pg_states_changed)
                 {
-                    this.save_last_clean().catch(this.die);
+                    this.save_last_clean().catch(console.error);
                 }
                 if (stats_changed)
                 {
@@ -694,11 +580,11 @@ class Mon
         }
     }
 
-    async on_stop(status)
+    async on_stop()
     {
         clearInterval(this.lease_timer);
         await this.etcd_call('/lease/revoke', { ID: this.etcd_lease_id }, this.config.etcd_mon_timeout, this.config.etcd_mon_retries);
-        process.exit(status);
+        process.exit(0);
     }
 
     async become_master()
@@ -751,13 +637,10 @@ class Mon
         for (const node_id in this.state.config.node_placement||{})
         {
             const node_cfg = this.state.config.node_placement[node_id];
-            if (/^\d+$/.exec(node_id))
+            if (!node_id || /^\d/.exec(node_id) ||
+                !node_cfg.level || !levels[node_cfg.level])
             {
-                node_cfg.level = 'osd';
-            }
-            if (!node_id || !node_cfg.level || !levels[node_cfg.level])
-            {
-                // All nodes must have non-empty IDs and valid levels
+                // All nodes must have non-empty non-numeric IDs and valid levels
                 continue;
             }
             tree[node_id] = { id: node_id, level: node_cfg.level, parent: node_cfg.parent, children: [] };
@@ -790,10 +673,10 @@ class Mon
                         .reduce((a, c) => { a[c] = true; return a; }, {});
                 }
                 delete tree[osd_num].children;
-                if (!tree[stat.host])
+                if (!tree[tree[osd_num].parent])
                 {
-                    tree[stat.host] = {
-                        id: stat.host,
+                    tree[tree[osd_num].parent] = {
+                        id: tree[osd_num].parent,
                         level: 'host',
                         parent: null,
                         children: [],
@@ -1139,7 +1022,7 @@ class Mon
                     pg_size: pool_cfg.pg_size,
                     pg_minsize: pool_cfg.pg_minsize,
                     max_combinations: pool_cfg.max_osd_combinations,
-                    ordered: pool_cfg.scheme != 'replicated',
+                    round_robin: pool_cfg.scheme != 'replicated',
                 };
                 let optimize_result;
                 if (old_pg_count > 0)
@@ -1162,6 +1045,10 @@ class Mon
                         {
                             pg.push(0);
                         }
+                        while (pg.length > pool_cfg.pg_size)
+                        {
+                            pg.pop();
+                        }
                     }
                     if (!this.state.config.pgs.hash)
                     {
@@ -1197,8 +1084,8 @@ class Mon
                 this.state.pool.stats[pool_id] = {
                     used_raw_tb: (this.state.pool.stats[pool_id]||{}).used_raw_tb || 0,
                     total_raw_tb: optimize_result.space,
-                    pg_real_size: pg_effsize || pool_cfg.pg_size,
-                    raw_to_usable: (pg_effsize || pool_cfg.pg_size) / (pool_cfg.scheme === 'replicated'
+                    pg_real_size: pg_effsize,
+                    raw_to_usable: pg_effsize / (pool_cfg.scheme === 'replicated'
                         ? 1 : (pool_cfg.pg_size - (pool_cfg.parity_chunks||0))),
                     space_efficiency: optimize_result.space/(optimize_result.total_space||1),
                 };
@@ -1308,7 +1195,7 @@ class Mon
         this.recheck_timer = setTimeout(() =>
         {
             this.recheck_timer = null;
-            this.recheck_pgs().catch(this.die);
+            this.recheck_pgs().catch(console.error);
         }, this.config.mon_change_timeout || 1000);
     }
 
@@ -1455,7 +1342,6 @@ class Mon
         {
             for (const inode_num in inode_stats[pool_id])
             {
-                let nonzero = inode_stats[pool_id][inode_num].raw_used > 0;
                 for (const op of [ 'read', 'write', 'delete' ])
                 {
                     const op_st = inode_stats[pool_id][inode_num][op];
@@ -1463,13 +1349,6 @@ class Mon
                     op_st.bps = prev_st ? (op_st.bytes - prev_st.bytes) * 1000n / tm : 0;
                     op_st.iops = prev_st ? (op_st.count - prev_st.count) * 1000n / tm : 0;
                     op_st.lat = prev_st ? (op_st.usec - prev_st.usec) / ((op_st.count - prev_st.count) || 1n) : 0;
-                    if (op_st.bps > 0 || op_st.iops > 0 || op_st.lat > 0)
-                        nonzero = true;
-                }
-                if (!nonzero && (!this.state.config.inode[pool_id] || !this.state.config.inode[pool_id][inode_num]))
-                {
-                    // Deleted inode (no data, no I/O, no config)
-                    delete inode_stats[pool_id][inode_num];
                 }
             }
         }
@@ -1518,18 +1397,6 @@ class Mon
                 } });
             }
         }
-        for (const pool_id in this.state.inode.stats)
-        {
-            for (const inode_num in this.state.inode.stats[pool_id])
-            {
-                if (!inode_stats[pool_id] || !inode_stats[pool_id][inode_num])
-                {
-                    txn.push({ requestDeleteRange: {
-                        key: b64(this.etcd_prefix+'/inode/stats/'+pool_id+'/'+inode_num),
-                    } });
-                }
-            }
-        }
         for (const pool_id in this.state.pool.stats)
         {
             const pool_stats = { ...this.state.pool.stats[pool_id] };
@@ -1595,7 +1462,7 @@ class Mon
         cur[key_parts[key_parts.length-1]] = kv.value;
         if (key === 'config/global')
         {
-            this.config = { ...this.initConfig, ...this.state.config.global };
+            this.config = this.state.config.global;
             this.check_config();
             for (const osd_num in this.state.osd.stats)
             {
@@ -1632,15 +1499,12 @@ class Mon
         }
         while (retries < 0 || retry < retries)
         {
-            retry++;
-            const base = this.pick_next_etcd();
+            const base = this.etcd_urls[Math.floor(Math.random()*this.etcd_urls.length)];
             const res = await POST(base+path, body, timeout);
             if (res.error)
             {
-                if (this.selected_etcd_url == base)
-                    this.selected_etcd_url = null;
-                console.error('failed to query etcd: '+res.error);
-                continue;
+                console.error('etcd returned error: '+res.error);
+                break;
             }
             if (res.json)
             {
@@ -1649,20 +1513,26 @@ class Mon
                     console.error('etcd returned error: '+res.json.error);
                     break;
                 }
+                if (this.etcd_urls.length > 1)
+                {
+                    // Stick to the same etcd for the rest of calls
+                    this.etcd_urls = [ base ];
+                }
                 return res.json;
             }
+            retry++;
         }
         this.die();
     }
 
-    _die(err)
+    die(err)
     {
         // In fact we can just try to rejoin
         console.error(new Error(err || 'Cluster connection failed'));
         process.exit(1);
     }
 
-    local_ips(all)
+    local_ips()
     {
         const ips = [];
         const ifaces = os.networkInterfaces();
@@ -1670,7 +1540,7 @@ class Mon
         {
             for (const iface of ifaces[ifname])
             {
-                if (iface.family == 'IPv4' && !iface.internal || all)
+                if (iface.family == 'IPv4' && !iface.internal)
                 {
                     ips.push(iface.address);
                 }

mon/test-optimize-simple.js

@@ -5,45 +5,21 @@ const LPOptimizer = require('./lp-optimizer.js');
 
 async function run()
 {
-    const osd_tree = {
-        100: { 1: 1 },
-        200: { 2: 1 },
-        300: { 3: 1 },
-    };
-
+    const osd_tree = { a: { 1: 1 }, b: { 2: 1 }, c: { 3: 1 } };
     let res;
 
     console.log('16 PGs, size=3');
-    res = await LPOptimizer.optimize_initial({ osd_tree, pg_size: 3, pg_count: 16, ordered: false });
+    res = await LPOptimizer.optimize_initial({ osd_tree, pg_size: 3, pg_count: 16 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 3, 'Initial distribution');
-    console.log('\nChange size to 2');
-    res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree, pg_size: 2, ordered: false });
+
+    console.log('\nReduce PG size to 2');
+    res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs.map(pg => pg.slice(0, 2)), osd_tree, pg_size: 2 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space >= 3*14/16 && res.osd_differs == 0, 'Redistribution');
+
     console.log('\nRemove OSD 3');
-    const no3_tree = { ...osd_tree };
-    delete no3_tree['300'];
-    res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree: no3_tree, pg_size: 2, ordered: false });
+    delete osd_tree['c'];
+    res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree, pg_size: 2 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 2, 'Redistribution after OSD removal');
-
-    console.log('\n16 PGs, size=3, ordered');
-    res = await LPOptimizer.optimize_initial({ osd_tree, pg_size: 3, pg_count: 16, ordered: true });
-    LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 3, 'Initial distribution');
-    console.log('\nChange size to 2, ordered');
-    res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree, pg_size: 2, ordered: true });
-    LPOptimizer.print_change_stats(res, false);
-    assert(res.space >= 3*14/16 && res.osd_differs < 8, 'Redistribution');
-}
-
-function assert(cond, txt)
-{
-    if (!cond)
-    {
-        throw new Error((txt||'test')+' failed');
-    }
 }
 
 run().catch(console.error);

mon/test-optimize-undersized.js

@@ -45,45 +45,30 @@ async function run()
     console.log('Empty tree:');
     let res = await LPOptimizer.optimize_initial({ osd_tree: cur_tree, pg_size: 3, pg_count: 256 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 0);
     console.log('\nAdding 1st failure domain:');
     cur_tree['dom1'] = osd_tree['dom1'];
     res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree: cur_tree, pg_size: 3 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 12 && res.total_space == 12);
     console.log('\nAdding 2nd failure domain:');
     cur_tree['dom2'] = osd_tree['dom2'];
     res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree: cur_tree, pg_size: 3 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 24 && res.total_space == 24);
     console.log('\nAdding 3rd failure domain:');
     cur_tree['dom3'] = osd_tree['dom3'];
     res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree: cur_tree, pg_size: 3 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 36 && res.total_space == 36);
     console.log('\nRemoving 3rd failure domain:');
     delete cur_tree['dom3'];
     res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree: cur_tree, pg_size: 3 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 24 && res.total_space == 24);
     console.log('\nRemoving 2nd failure domain:');
     delete cur_tree['dom2'];
     res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree: cur_tree, pg_size: 3 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 12 && res.total_space == 12);
     console.log('\nRemoving 1st failure domain:');
     delete cur_tree['dom1'];
     res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree: cur_tree, pg_size: 3 });
     LPOptimizer.print_change_stats(res, false);
-    assert(res.space == 0);
-}
-
-function assert(cond, txt)
-{
-    if (!cond)
-    {
-        throw new Error((txt||'test')+' failed');
-    }
 }
 
 run().catch(console.error);

mon/test-optimize-unfeasible.js

@@ -1,33 +0,0 @@
-// Copyright (c) Vitaliy Filippov, 2019+
-// License: VNPL-1.1 (see README.md for details)
-
-const LPOptimizer = require('./lp-optimizer.js');
-
-const osd_tree = {
-    100: {
-        1: 0.1,
-        2: 0.1,
-        3: 0.1,
-    },
-    200: {
-        4: 0.1,
-        5: 0.1,
-        6: 0.1,
-    },
-};
-
-async function run()
-{
-    let res;
-    console.log('256 PGs, 3+3 OSDs, size=2');
-    res = await LPOptimizer.optimize_initial({ osd_tree, pg_size: 2, pg_count: 256 });
-    LPOptimizer.print_change_stats(res, false);
-
-    // Should NOT fail with the "unfeasible or unbounded" exception
-    console.log('\nRemoving osd.2');
-    delete osd_tree[100][2];
-    res = await LPOptimizer.optimize_change({ prev_pgs: res.int_pgs, osd_tree, pg_size: 2 });
-    LPOptimizer.print_change_stats(res, false);
-}
-
-run().catch(console.error);

patches/PVE_VitastorPlugin.pm

@@ -1,503 +0,0 @@
-# Install as /usr/share/perl5/PVE/Storage/Custom/VitastorPlugin.pm
-
-# Proxmox Vitastor Driver
-# Copyright (c) Vitaliy Filippov, 2021+
-# License: VNPL-1.1 or GNU AGPLv3.0
-
-package PVE::Storage::Custom::VitastorPlugin;
-
-use strict;
-use warnings;
-
-use JSON;
-
-use PVE::Storage::Plugin;
-use PVE::Tools qw(run_command);
-
-use base qw(PVE::Storage::Plugin);
-
-sub api
-{
-    # Trick it :)
-    return PVE::Storage->APIVER;
-}
-
-sub run_cli
-{
-    my ($scfg, $cmd, %args) = @_;
-    my $retval;
-    my $stderr = '';
-    my $errmsg = $args{errmsg} ? $args{errmsg}.": " : "vitastor-cli error: ";
-    my $json = delete $args{json};
-    $json = 1 if !defined $json;
-    my $binary = delete $args{binary};
-    $binary = '/usr/bin/vitastor-cli' if !defined $binary;
-    if (!exists($args{errfunc}))
-    {
-        $args{errfunc} = sub
-        {
-            my $line = shift;
-            print STDERR $line;
-            *STDERR->flush();
-            $stderr .= $line;
-        };
-    }
-    if (!exists($args{outfunc}))
-    {
-        $retval = '';
-        $args{outfunc} = sub { $retval .= shift };
-        if ($json)
-        {
-            unshift @$cmd, '--json';
-        }
-    }
-    if ($scfg->{vitastor_etcd_address})
-    {
-        unshift @$cmd, '--etcd_address', $scfg->{vitastor_etcd_address};
-    }
-    if ($scfg->{vitastor_config_path})
-    {
-        unshift @$cmd, '--config_path', $scfg->{vitastor_config_path};
-    }
-    unshift @$cmd, $binary;
-    eval { run_command($cmd, %args); };
-    if (my $err = $@)
-    {
-        die "Error invoking vitastor-cli: $err";
-    }
-    if (defined $retval)
-    {
-        # untaint
-        $retval =~ /^(.*)$/s;
-        if ($json)
-        {
-            eval { $retval = JSON::decode_json($1); };
-            if ($@)
-            {
-                die "vitastor-cli returned bad JSON: $@";
-            }
-        }
-        else
-        {
-            $retval = $1;
-        }
-    }
-    return $retval;
-}
-
-# Configuration
-
-sub type
-{
-    return 'vitastor';
-}
-
-sub plugindata
-{
-    return {
-        content => [ { images => 1, rootdir => 1 }, { images => 1 } ],
-    };
-}
-
-sub properties
-{
-    return {
-        vitastor_etcd_address => {
-            description => 'IP address(es) of etcd.',
-            type => 'string',
-            format => 'pve-storage-portal-dns-list',
-        },
-        vitastor_etcd_prefix => {
-            description => 'Prefix for Vitastor etcd metadata',
-            type => 'string',
-        },
-        vitastor_config_path => {
-            description => 'Path to Vitastor configuration file',
-            type => 'string',
-        },
-        vitastor_prefix => {
-            description => 'Image name prefix',
-            type => 'string',
-        },
-        vitastor_pool => {
-            description => 'Default pool to use for images',
-            type => 'string',
-        },
-        vitastor_nbd => {
-            description => 'Use kernel NBD devices (slower)',
-            type => 'boolean',
-        },
-    };
-}
-
-sub options
-{
-    return {
-        nodes => { optional => 1 },
-        disable => { optional => 1 },
-        vitastor_etcd_address => { optional => 1},
-        vitastor_etcd_prefix => { optional => 1 },
-        vitastor_config_path => { optional => 1 },
-        vitastor_prefix => { optional => 1 },
-        vitastor_pool => {},
-        vitastor_nbd => { optional => 1 },
-    };
-}
-
-# Storage implementation
-
-sub parse_volname
-{
-    my ($class, $volname) = @_;
-    if ($volname =~ m/^((base-(\d+)-\S+)\/)?((?:(base)|(vm))-(\d+)-\S+)$/)
-    {
-        # ($vtype, $name, $vmid, $basename, $basevmid, $isBase, $format)
-        return ('images', $4, $7, $2, $3, $5, 'raw');
-    }
-    die "unable to parse vitastor volume name '$volname'\n";
-}
-
-sub _qemu_option
-{
-    my ($k, $v) = @_;
-    if (defined $v && $v ne "")
-    {
-        $v =~ s/:/\\:/gso;
-        return ":$k=$v";
-    }
-    return "";
-}
-
-sub path
-{
-    my ($class, $scfg, $volname, $storeid, $snapname) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my ($vtype, $name, $vmid) = $class->parse_volname($volname);
-    $name .= '@'.$snapname if $snapname;
-    if ($scfg->{vitastor_nbd})
-    {
-        my $mapped = run_cli($scfg, [ 'ls' ], binary => '/usr/bin/vitastor-nbd');
-        my ($kerneldev) = grep { $mapped->{$_}->{image} eq $prefix.$name } keys %$mapped;
-        die "Image not mapped via NBD" if !$kerneldev;
-        return ($kerneldev, $vmid, $vtype);
-    }
-    my $path = "vitastor";
-    $path .= _qemu_option('config_path', $scfg->{vitastor_config_path});
-    # FIXME This is the only exception: etcd_address -> etcd_host for qemu
-    $path .= _qemu_option('etcd_host', $scfg->{vitastor_etcd_address});
-    $path .= _qemu_option('etcd_prefix', $scfg->{vitastor_etcd_prefix});
-    $path .= _qemu_option('image', $prefix.$name);
-    return ($path, $vmid, $vtype);
-}
-
-sub _find_free_diskname
-{
-    my ($class, $storeid, $scfg, $vmid, $fmt, $add_fmt_suffix) = @_;
-    my $list = _process_list($scfg, $storeid, run_cli($scfg, [ 'ls' ]));
-    $list = [ map { $_->{name} } @$list ];
-    return PVE::Storage::Plugin::get_next_vm_diskname($list, $storeid, $vmid, undef, $scfg);
-}
-
-# Used only in "Create Template" and, in fact, converts a VM into a template
-# As a consequence, this is always invoked with the VM powered off
-# So we just rename vm-xxx to base-xxx and make it a readonly base layer
-sub create_base
-{
-    my ($class, $storeid, $scfg, $volname) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-
-    my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = $class->parse_volname($volname);
-    die "create_base not possible with base image\n" if $isBase;
-
-    my $info = _process_list($scfg, $storeid, run_cli($scfg, [ 'ls', $prefix.$name ]))->[0];
-    die "image $name does not exist\n" if !$info;
-
-    die "volname '$volname' contains wrong information about parent {$info->{parent}} $basename\n"
-        if $basename && (!$info->{parent} || $info->{parent} ne $basename);
-
-    my $newname = $name;
-    $newname =~ s/^vm-/base-/;
-
-    my $newvolname = $basename ? "$basename/$newname" : "$newname";
-    run_cli($scfg, [ 'modify', '--rename', $prefix.$newname, '--readonly', $prefix.$name ], json => 0);
-
-    return $newvolname;
-}
-
-sub clone_image
-{
-    my ($class, $scfg, $storeid, $volname, $vmid, $snapname) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-
-    my $snap = '';
-    $snap = '@'.$snapname if length $snapname;
-
-    my ($vtype, $basename, $basevmid, undef, undef, $isBase) = $class->parse_volname($volname);
-    die "$volname is not a base image and snapname is not provided\n" if !$isBase && !length($snapname);
-
-    my $name = $class->find_free_diskname($storeid, $scfg, $vmid);
-
-    warn "clone $volname: $basename snapname $snap to $name\n";
-
-    my $newvol = "$basename/$name";
-    $newvol = $name if length($snapname);
-
-    run_cli($scfg, [ 'create', '--parent', $prefix.$basename.$snap, $prefix.$name ], json => 0);
-
-    return $newvol;
-}
-
-sub alloc_image
-{
-    # $size is in kb in this method
-    my ($class, $storeid, $scfg, $vmid, $fmt, $name, $size) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    die "illegal name '$name' - should be 'vm-$vmid-*'\n" if $name && $name !~ m/^vm-$vmid-/;
-    $name = $class->find_free_diskname($storeid, $scfg, $vmid) if !$name;
-    run_cli($scfg, [ 'create', '--size', (int(($size+3)/4)*4).'k', '--pool', $scfg->{vitastor_pool}, $prefix.$name ], json => 0);
-    return $name;
-}
-
-sub free_image
-{
-    my ($class, $storeid, $scfg, $volname, $isBase) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my ($vtype, $name, $vmid, undef, undef, undef) = $class->parse_volname($volname);
-    $class->deactivate_volume($storeid, $scfg, $volname);
-    my $full_list = run_cli($scfg, [ 'ls', '-l' ]);
-    my $list = _process_list($scfg, $storeid, $full_list);
-    # Remove image and all its snapshots
-    my $rm_names = {
-        map { ($prefix.$_->{name} => 1) }
-        grep { $_->{name} eq $name || substr($_->{name}, 0, length($name)+1) eq ($name.'@') }
-        @$list
-    };
-    my $children = [ grep { $_->{parent_name} && $rm_names->{$_->{parent_name}} } @$full_list ];
-    die "Image has children: ".join(', ', map {
-        substr($_->{name}, 0, length $prefix) eq $prefix
-            ? substr($_->name, length $prefix)
-            : $_->{name}
-    } @$children)."\n" if @$children;
-    my $to_remove = [ grep { $rm_names->{$_->{name}} } @$full_list ];
-    for my $rmi (@$to_remove)
-    {
-        run_cli($scfg, [ 'rm-data', '--pool', $rmi->{pool_id}, '--inode', $rmi->{inode_num} ], json => 0);
-    }
-    for my $rmi (@$to_remove)
-    {
-        run_cli($scfg, [ 'rm', $rmi->{name} ], json => 0);
-    }
-    return undef;
-}
-
-sub _process_list
-{
-    my ($scfg, $storeid, $result) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my $list = [];
-    foreach my $el (@$result)
-    {
-        next if !$el->{name} || length($prefix) && substr($el->{name}, 0, length $prefix) ne $prefix;
-        my $name = substr($el->{name}, length $prefix);
-        next if $name =~ /@/;
-        my ($owner) = $name =~ /^(?:vm|base)-(\d+)-/s;
-        next if !defined $owner;
-        my $parent = !defined $el->{parent_name}
-            ? undef
-            : ($prefix eq '' || substr($el->{parent_name}, 0, length $prefix) eq $prefix
-                ? substr($el->{parent_name}, length $prefix) : '');
-        my $volid = $parent && $parent =~ /^(base-\d+-\S+)$/s
-            ? "$storeid:$1/$name" : "$storeid:$name";
-        push @$list, {
-            format => 'raw',
-            volid => $volid,
-            name => $name,
-            size => $el->{size},
-            parent => $parent,
-            vmid => $owner,
-        };
-    }
-    return $list;
-}
-
-sub list_images
-{
-    my ($class, $storeid, $scfg, $vmid, $vollist, $cache) = @_;
-    my $list = _process_list($scfg, $storeid, run_cli($scfg, [ 'ls', '-l' ]));
-    if ($vollist)
-    {
-        my $h = { map { ($_ => 1) } @$vollist };
-        $list = [ grep { $h->{$_->{volid}} } @$list ]
-    }
-    elsif (defined $vmid)
-    {
-        $list = [ grep { $_->{vmid} eq $vmid } @$list ];
-    }
-    return $list;
-}
-
-sub status
-{
-    my ($class, $storeid, $scfg, $cache) = @_;
-    my $stats = [ grep { $_->{name} eq $scfg->{vitastor_pool} } @{ run_cli($scfg, [ 'df' ]) } ]->[0];
-    my $free = $stats ? $stats->{max_available} : 0;
-    my $used = $stats ? $stats->{used_raw}/($stats->{raw_to_usable}||1) : 0;
-    my $total = $free+$used;
-    my $active = $stats ? 1 : 0;
-    return ($total, $free, $used, $active);
-}
-
-sub activate_storage
-{
-    my ($class, $storeid, $scfg, $cache) = @_;
-    return 1;
-}
-
-sub deactivate_storage
-{
-    my ($class, $storeid, $scfg, $cache) = @_;
-    return 1;
-}
-
-sub map_volume
-{
-    my ($class, $storeid, $scfg, $volname, $snapname) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-
-    my ($vtype, $img_name, $vmid) = $class->parse_volname($volname);
-    my $name = $img_name;
-    $name .= '@'.$snapname if $snapname;
-
-    my $mapped = run_cli($scfg, [ 'ls' ], binary => '/usr/bin/vitastor-nbd');
-    my ($kerneldev) = grep { $mapped->{$_}->{image} eq $prefix.$name } keys %$mapped;
-    return $kerneldev if $kerneldev && -b $kerneldev; # already mapped
-
-    $kerneldev = run_cli($scfg, [ 'map', '--image', $prefix.$name ], binary => '/usr/bin/vitastor-nbd', json => 0);
-    return $kerneldev;
-}
-
-sub unmap_volume
-{
-    my ($class, $storeid, $scfg, $volname, $snapname) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-
-    return 1 if !$scfg->{vitastor_nbd};
-
-    my ($vtype, $name, $vmid) = $class->parse_volname($volname);
-    $name .= '@'.$snapname if $snapname;
-
-    my $mapped = run_cli($scfg, [ 'ls' ], binary => '/usr/bin/vitastor-nbd');
-    my ($kerneldev) = grep { $mapped->{$_}->{image} eq $prefix.$name } keys %$mapped;
-    if ($kerneldev && -b $kerneldev)
-    {
-        run_cli($scfg, [ 'unmap', $kerneldev ], binary => '/usr/bin/vitastor-nbd', json => 0);
-    }
-
-    return 1;
-}
-
-sub activate_volume
-{
-    my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
-    $class->map_volume($storeid, $scfg, $volname, $snapname) if $scfg->{vitastor_nbd};
-    return 1;
-}
-
-sub deactivate_volume
-{
-    my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
-    $class->unmap_volume($storeid, $scfg, $volname, $snapname);
-    return 1;
-}
-
-sub volume_size_info
-{
-    my ($class, $scfg, $storeid, $volname, $timeout) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my ($vtype, $name, $vmid) = $class->parse_volname($volname);
-    my $info = _process_list($scfg, $storeid, run_cli($scfg, [ 'ls', $prefix.$name ]))->[0];
-    #return wantarray ? ($size, $format, $used, $parent, $st->ctime) : $size;
-    return $info->{size};
-}
-
-sub volume_resize
-{
-    my ($class, $scfg, $storeid, $volname, $size, $running) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my ($vtype, $name, $vmid) = $class->parse_volname($volname);
-    # $size is in bytes in this method
-    run_cli($scfg, [ 'modify', '--resize', (int(($size+4095)/4096)*4).'k', $prefix.$name ], json => 0);
-    return undef;
-}
-
-sub volume_snapshot
-{
-    my ($class, $scfg, $storeid, $volname, $snap) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my ($vtype, $name, $vmid) = $class->parse_volname($volname);
-    run_cli($scfg, [ 'create', '--snapshot', $snap, $prefix.$name ], json => 0);
-    return undef;
-}
-
-sub volume_snapshot_rollback
-{
-    my ($class, $scfg, $storeid, $volname, $snap) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my ($vtype, $name, $vmid) = $class->parse_volname($volname);
-    run_cli($scfg, [ 'rm', $prefix.$name ], json => 0);
-    run_cli($scfg, [ 'create', '--parent', $prefix.$name.'@'.$snap, $prefix.$name ], json => 0);
-    return undef;
-}
-
-sub volume_snapshot_delete
-{
-    my ($class, $scfg, $storeid, $volname, $snap, $running) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my ($vtype, $name, $vmid) = $class->parse_volname($volname);
-    run_cli($scfg, [ 'rm', $prefix.$name.'@'.$snap ], json => 0);
-    return undef;
-}
-
-sub volume_snapshot_needs_fsfreeze
-{
-    return 1;
-}
-
-sub volume_has_feature
-{
-    my ($class, $scfg, $feature, $storeid, $volname, $snapname, $running) = @_;
-    my $features = {
-        snapshot => { current => 1, snap => 1 },
-        clone => { base => 1, snap => 1 },
-        template => { current => 1 },
-        copy => { base => 1, current => 1, snap => 1 },
-        sparseinit => { base => 1, current => 1 },
-        rename => { current => 1 },
-    };
-    my ($vtype, $name, $vmid, $basename, $basevmid, $isBase) = $class->parse_volname($volname);
-    my $key = undef;
-    if ($snapname)
-    {
-        $key = 'snap';
-    }
-    else
-    {
-        $key = $isBase ? 'base' : 'current';
-    }
-    return 1 if $features->{$feature}->{$key};
-    return undef;
-}
-
-sub rename_volume
-{
-    my ($class, $scfg, $storeid, $source_volname, $target_vmid, $target_volname) = @_;
-    my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
-    my (undef, $source_image, $source_vmid, $base_name, $base_vmid, undef, $format) =
-        $class->parse_volname($source_volname);
-    $target_volname = $class->find_free_diskname($storeid, $scfg, $target_vmid, $format) if !$target_volname;
-    run_cli($scfg, [ 'modify', '--rename', $prefix.$target_volname, $prefix.$source_image ], json => 0);
-    $base_name = $base_name ? "${base_name}/" : '';
-    return "${storeid}:${base_name}${target_volname}";
-}
-
-1;

patches/cinder-vitastor.py

@@ -50,7 +50,7 @@ from cinder.volume import configuration
 from cinder.volume import driver
 from cinder.volume import volume_utils
 
-VERSION = '0.6.12'
+VERSION = '0.6.8'
 
 LOG = logging.getLogger(__name__)
 
@@ -658,8 +658,8 @@ class VitastorDriver(driver.CloneableImageVD,
                 'etcd_address': self.configuration.vitastor_etcd_address,
                 'etcd_prefix': self.configuration.vitastor_etcd_prefix,
                 'name': volume.name,
-                'logical_block_size': '512',
-                'physical_block_size': '4096',
+                'logical_block_size': 512,
+                'physical_block_size': 4096,
             }
         }
         LOG.debug('connection data: %s', data)

patches/libvirt-5.0-vitastor.diff

@@ -1,4 +1,4 @@
-commit 7f01510ef207940b07fac4f5fc8b9f1580b443aa
+commit bd283191b3e7a4c6d1c100d3d96e348a1ebffe55
 Author: Vitaliy Filippov <vitalif@yourcmc.ru>
 Date:   Sun Jun 27 12:52:40 2021 +0300
 
@@ -65,38 +65,10 @@ index 4bf2b5f..dbc011b 100644
  
  int                     virConnectListAllStoragePools(virConnectPtr conn,
 diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
-index 222bb8c..2c30c55 100644
+index 222bb8c..685d255 100644
 --- a/src/conf/domain_conf.c
 +++ b/src/conf/domain_conf.c
-@@ -4667,8 +4667,7 @@ virDomainDeviceDefPostParseCommon(virDomainDeviceDefPtr dev,
-     if (dev->type == VIR_DOMAIN_DEVICE_DISK) {
-         virDomainDiskDefPtr disk = dev->data.disk;
- 
--        /* internal snapshots and config files are currently supported
--         * only with rbd: */
-+        /* internal snapshots are currently supported only with rbd: */
-         if (virStorageSourceGetActualType(disk->src) != VIR_STORAGE_TYPE_NETWORK &&
-             disk->src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD) {
-             if (disk->src->snapshot) {
-@@ -4677,11 +4676,15 @@ virDomainDeviceDefPostParseCommon(virDomainDeviceDefPtr dev,
-                                  "only with 'rbd' disks"));
-                 return -1;
-             }
--
-+        }
-+        /* config files are currently supported only with rbd and vitastor: */
-+        if (virStorageSourceGetActualType(disk->src) != VIR_STORAGE_TYPE_NETWORK &&
-+            disk->src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD &&
-+            disk->src->protocol != VIR_STORAGE_NET_PROTOCOL_VITASTOR) {
-             if (disk->src->configFile) {
-                 virReportError(VIR_ERR_XML_ERROR, "%s",
-                                _("<config> element is currently supported "
--                                 "only with 'rbd' disks"));
-+                                 "only with 'rbd' and 'vitastor' disks"));
-                 return -1;
-             }
-         }
-@@ -8653,6 +8656,10 @@ virDomainDiskSourceNetworkParse(xmlNodePtr node,
+@@ -8653,6 +8653,10 @@ virDomainDiskSourceNetworkParse(xmlNodePtr node,
          goto cleanup;
      }
  
@@ -107,7 +79,7 @@ index 222bb8c..2c30c55 100644
      if ((haveTLS = virXMLPropString(node, "tls")) &&
          (src->haveTLS = virTristateBoolTypeFromString(haveTLS)) <= 0) {
          virReportError(VIR_ERR_XML_ERROR,
-@@ -23849,6 +23856,10 @@ virDomainDiskSourceFormatNetwork(virBufferPtr attrBuf,
+@@ -23849,6 +23853,10 @@ virDomainDiskSourceFormatNetwork(virBufferPtr attrBuf,
  
      virBufferEscapeString(attrBuf, " name='%s'", path ? path : src->path);
  
@@ -118,7 +90,7 @@ index 222bb8c..2c30c55 100644
      VIR_FREE(path);
  
      if (src->haveTLS != VIR_TRISTATE_BOOL_ABSENT &&
-@@ -30930,6 +30941,7 @@ virDomainDiskTranslateSourcePool(virDomainDiskDefPtr def)
+@@ -30930,6 +30938,7 @@ virDomainDiskTranslateSourcePool(virDomainDiskDefPtr def)
  
      case VIR_STORAGE_POOL_MPATH:
      case VIR_STORAGE_POOL_RBD:
@@ -244,7 +216,7 @@ index 73e988a..ab7bb81 100644
      case VIR_STORAGE_NET_PROTOCOL_NONE:
          virReportError(VIR_ERR_NO_SUPPORT,
 diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
-index cbf0aa4..f0ca9e7 100644
+index cbf0aa4..096700d 100644
 --- a/src/qemu/qemu_block.c
 +++ b/src/qemu/qemu_block.c
 @@ -959,6 +959,42 @@ qemuBlockStorageSourceGetRBDProps(virStorageSourcePtr src)
@@ -303,7 +275,7 @@ index cbf0aa4..f0ca9e7 100644
              if (!(fileprops = qemuBlockStorageSourceGetSheepdogProps(src)))
                  return NULL;
 diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
-index 822d5f8..abec34e 100644
+index 822d5f8..e375cef 100644
 --- a/src/qemu/qemu_command.c
 +++ b/src/qemu/qemu_command.c
 @@ -975,6 +975,43 @@ qemuBuildNetworkDriveStr(virStorageSourcePtr src,
@@ -415,7 +387,7 @@ index 4a13e90..33301c7 100644
              ignore_value(VIR_STRDUP(stable_path, data->path));
              break;
 diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
-index bd4b027..8454906 100644
+index bd4b027..b323cd6 100644
 --- a/src/util/virstoragefile.c
 +++ b/src/util/virstoragefile.c
 @@ -84,7 +84,8 @@ VIR_ENUM_IMPL(virStorageNetProtocol, VIR_STORAGE_NET_PROTOCOL_LAST,

patches/libvirt-7.0-vitastor.diff

@@ -1,4 +1,4 @@
-commit 4e74c622884e2585b2cfcdf322fbd2bff6de41ca
+commit 41cdfe8317d98f70aadedfdbb381effed2641bdd
 Author: Vitaliy Filippov <vitalif@yourcmc.ru>
 Date:   Fri Jul 9 01:31:57 2021 +0300
 
@@ -65,38 +65,10 @@ index 089e1e0..d7e7ef4 100644
  
  int                     virConnectListAllStoragePools(virConnectPtr conn,
 diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
-index 01b7187..645c758 100644
+index 01b7187..c6e9702 100644
 --- a/src/conf/domain_conf.c
 +++ b/src/conf/domain_conf.c
-@@ -5230,8 +5230,7 @@ virDomainDiskDefPostParse(virDomainDiskDefPtr disk,
-                           const virDomainDef *def,
-                           virDomainXMLOptionPtr xmlopt)
- {
--    /* internal snapshots and config files are currently supported
--     * only with rbd: */
-+    /* internal snapshots are currently supported only with rbd: */
-     if (virStorageSourceGetActualType(disk->src) != VIR_STORAGE_TYPE_NETWORK &&
-         disk->src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD) {
-         if (disk->src->snapshot) {
-@@ -5240,11 +5239,15 @@ virDomainDiskDefPostParse(virDomainDiskDefPtr disk,
-                              "only with 'rbd' disks"));
-             return -1;
-         }
--
-+    }
-+    /* config files are currently supported only with rbd and vitastor: */
-+    if (virStorageSourceGetActualType(disk->src) != VIR_STORAGE_TYPE_NETWORK &&
-+        disk->src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD &&
-+        disk->src->protocol != VIR_STORAGE_NET_PROTOCOL_VITASTOR) {
-         if (disk->src->configFile) {
-             virReportError(VIR_ERR_XML_ERROR, "%s",
-                            _("<config> element is currently supported "
--                             "only with 'rbd' disks"));
-+                             "only with 'rbd' and 'vitastor' disks"));
-             return -1;
-         }
-     }
-@@ -8261,7 +8264,8 @@ virDomainDiskSourceNetworkParse(xmlNodePtr node,
+@@ -8261,7 +8261,8 @@ virDomainDiskSourceNetworkParse(xmlNodePtr node,
      src->configFile = virXPathString("string(./config/@file)", ctxt);
  
      if (src->protocol == VIR_STORAGE_NET_PROTOCOL_HTTP ||
@@ -106,7 +78,7 @@ index 01b7187..645c758 100644
          src->query = virXMLPropString(node, "query");
  
      if (virDomainStorageNetworkParseHosts(node, ctxt, &src->hosts, &src->nhosts) < 0)
-@@ -31392,6 +31396,7 @@ virDomainStorageSourceTranslateSourcePool(virStorageSourcePtr src,
+@@ -31392,6 +31393,7 @@ virDomainStorageSourceTranslateSourcePool(virStorageSourcePtr src,
  
      case VIR_STORAGE_POOL_MPATH:
      case VIR_STORAGE_POOL_RBD:
@@ -244,7 +216,7 @@ index 17b93d0..c5a0084 100644
      case VIR_STORAGE_NET_PROTOCOL_NONE:
          virReportError(VIR_ERR_NO_SUPPORT,
 diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
-index f9c6da2..d837a05 100644
+index f9c6da2..922dde5 100644
 --- a/src/qemu/qemu_block.c
 +++ b/src/qemu/qemu_block.c
 @@ -938,6 +938,38 @@ qemuBlockStorageSourceGetRBDProps(virStorageSourcePtr src,
@@ -321,7 +293,7 @@ index f9c6da2..d837a05 100644
              driver = "sheepdog";
              if (!(location = qemuBlockStorageSourceGetSheepdogProps(src)))
 diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
-index 6f970a3..4c03fb8 100644
+index 6f970a3..10b39ca 100644
 --- a/src/qemu/qemu_command.c
 +++ b/src/qemu/qemu_command.c
 @@ -1034,6 +1034,43 @@ qemuBuildNetworkDriveStr(virStorageSourcePtr src,
@@ -443,7 +415,7 @@ index 29c4c86..a27ad94 100644
      case VIR_STORAGE_POOL_LOGICAL:
      case VIR_STORAGE_POOL_DISK:
 diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
-index 0d3c2af..edb7f9e 100644
+index 0d3c2af..36e3afc 100644
 --- a/src/util/virstoragefile.c
 +++ b/src/util/virstoragefile.c
 @@ -91,6 +91,7 @@ VIR_ENUM_IMPL(virStorageNetProtocol,

patches/libvirt-7.5-vitastor.diff

@@ -1,4 +1,4 @@
-commit c97d7f2bfb7798f0d68bdba2646245dcfb940efa
+commit c6e1958a1b4974828e8e5852beb252ce6594e670
 Author: Vitaliy Filippov <vitalif@yourcmc.ru>
 Date:   Mon Jun 28 01:20:19 2021 +0300
 
@@ -86,37 +86,6 @@ index d78f846..f7222e3 100644
      case VIR_STORAGE_POOL_SHEEPDOG:
      case VIR_STORAGE_POOL_GLUSTER:
      case VIR_STORAGE_POOL_LAST:
-diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c
-index 2124d25..6acc6fa 100644
---- a/src/conf/domain_validate.c
-+++ b/src/conf/domain_validate.c
-@@ -470,7 +470,7 @@ virDomainDiskDefValidateSourceChainOne(const virStorageSource *src)
-         }
-     }
- 
--    /* internal snapshots and config files are currently supported only with rbd: */
-+    /* internal snapshots are currently supported only with rbd: */
-     if (virStorageSourceGetActualType(src) != VIR_STORAGE_TYPE_NETWORK &&
-         src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD) {
-         if (src->snapshot) {
-@@ -479,11 +479,15 @@ virDomainDiskDefValidateSourceChainOne(const virStorageSource *src)
-                              "only with 'rbd' disks"));
-             return -1;
-         }
--
-+    }
-+    /* config files are currently supported only with rbd and vitastor: */
-+    if (virStorageSourceGetActualType(src) != VIR_STORAGE_TYPE_NETWORK &&
-+        src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD &&
-+        src->protocol != VIR_STORAGE_NET_PROTOCOL_VITASTOR) {
-         if (src->configFile) {
-             virReportError(VIR_ERR_XML_ERROR, "%s",
-                            _("<config> element is currently supported "
--                             "only with 'rbd' disks"));
-+                             "only with 'rbd' and 'vitastor' disks"));
-             return -1;
-         }
-     }
 diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
 index 2aa9a3d..166ca1f 100644
 --- a/src/conf/storage_conf.c
@@ -279,7 +248,7 @@ index c0905b0..c172378 100644
      case VIR_STORAGE_NET_PROTOCOL_NONE:
          virReportError(VIR_ERR_NO_SUPPORT,
 diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
-index 6627d04..f769d24 100644
+index 6627d04..c33f428 100644
 --- a/src/qemu/qemu_block.c
 +++ b/src/qemu/qemu_block.c
 @@ -928,6 +928,38 @@ qemuBlockStorageSourceGetRBDProps(virStorageSource *src,
@@ -356,7 +325,7 @@ index 6627d04..f769d24 100644
              driver = "sheepdog";
              if (!(location = qemuBlockStorageSourceGetSheepdogProps(src)))
 diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
-index ea51369..d714597 100644
+index ea51369..8258632 100644
 --- a/src/qemu/qemu_command.c
 +++ b/src/qemu/qemu_command.c
 @@ -1074,6 +1074,43 @@ qemuBuildNetworkDriveStr(virStorageSource *src,
@@ -466,7 +435,7 @@ index c2ff4b8..70d0689 100644
          case VIR_STORAGE_POOL_ZFS:
          case VIR_STORAGE_POOL_LAST:
 diff --git a/src/storage_file/storage_source_backingstore.c b/src/storage_file/storage_source_backingstore.c
-index e48ae72..2017ccc 100644
+index e48ae72..d7a9b72 100644
 --- a/src/storage_file/storage_source_backingstore.c
 +++ b/src/storage_file/storage_source_backingstore.c
 @@ -284,6 +284,75 @@ virStorageSourceParseRBDColonString(const char *rbdstr,

patches/libvirt-7.6-vitastor.diff

@@ -1,692 +0,0 @@
-commit c97d7f2bfb7798f0d68bdba2646245dcfb940efa
-Author: Vitaliy Filippov <vitalif@yourcmc.ru>
-Date:   Mon Jun 28 01:20:19 2021 +0300
-
-    Add Vitastor support
-
-Index: libvirt-7.6.0/docs/schemas/domaincommon.rng
-===================================================================
---- libvirt-7.6.0.orig/docs/schemas/domaincommon.rng
-+++ libvirt-7.6.0/docs/schemas/domaincommon.rng
-@@ -1877,6 +1877,35 @@
-     </element>
-   </define>
- 
-+  <define name="diskSourceNetworkProtocolVitastor">
-+    <element name="source">
-+      <interleave>
-+        <attribute name="protocol">
-+          <value>vitastor</value>
-+        </attribute>
-+        <ref name="diskSourceCommon"/>
-+        <optional>
-+          <attribute name="name"/>
-+        </optional>
-+        <optional>
-+          <attribute name="query"/>
-+        </optional>
-+        <zeroOrMore>
-+          <ref name="diskSourceNetworkHost"/>
-+        </zeroOrMore>
-+        <optional>
-+          <element name="config">
-+            <attribute name="file">
-+              <ref name="absFilePath"/>
-+            </attribute>
-+            <empty/>
-+          </element>
-+        </optional>
-+        <empty/>
-+      </interleave>
-+    </element>
-+  </define>
-+
-   <define name="diskSourceNetworkProtocolISCSI">
-     <element name="source">
-       <attribute name="protocol">
-@@ -2133,6 +2162,7 @@
-       <ref name="diskSourceNetworkProtocolSimple"/>
-       <ref name="diskSourceNetworkProtocolVxHS"/>
-       <ref name="diskSourceNetworkProtocolNFS"/>
-+      <ref name="diskSourceNetworkProtocolVitastor"/>
-     </choice>
-   </define>
- 
-Index: libvirt-7.6.0/include/libvirt/libvirt-storage.h
-===================================================================
---- libvirt-7.6.0.orig/include/libvirt/libvirt-storage.h
-+++ libvirt-7.6.0/include/libvirt/libvirt-storage.h
-@@ -245,6 +245,7 @@ typedef enum {
-     VIR_CONNECT_LIST_STORAGE_POOLS_ZFS           = 1 << 17,
-     VIR_CONNECT_LIST_STORAGE_POOLS_VSTORAGE      = 1 << 18,
-     VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI_DIRECT  = 1 << 19,
-+    VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR      = 1 << 20,
- } virConnectListAllStoragePoolsFlags;
- 
- int                     virConnectListAllStoragePools(virConnectPtr conn,
-Index: libvirt-7.6.0/src/conf/domain_conf.c
-===================================================================
---- libvirt-7.6.0.orig/src/conf/domain_conf.c
-+++ libvirt-7.6.0/src/conf/domain_conf.c
-@@ -8268,7 +8268,8 @@ virDomainDiskSourceNetworkParse(xmlNodeP
-     src->configFile = virXPathString("string(./config/@file)", ctxt);
- 
-     if (src->protocol == VIR_STORAGE_NET_PROTOCOL_HTTP ||
--        src->protocol == VIR_STORAGE_NET_PROTOCOL_HTTPS)
-+        src->protocol == VIR_STORAGE_NET_PROTOCOL_HTTPS ||
-+        src->protocol == VIR_STORAGE_NET_PROTOCOL_VITASTOR)
-         src->query = virXMLPropString(node, "query");
- 
-     if (virDomainStorageNetworkParseHosts(node, ctxt, &src->hosts, &src->nhosts) < 0)
-@@ -30831,6 +30832,7 @@ virDomainStorageSourceTranslateSourcePoo
- 
-     case VIR_STORAGE_POOL_MPATH:
-     case VIR_STORAGE_POOL_RBD:
-+    case VIR_STORAGE_POOL_VITASTOR:
-     case VIR_STORAGE_POOL_SHEEPDOG:
-     case VIR_STORAGE_POOL_GLUSTER:
-     case VIR_STORAGE_POOL_LAST:
-Index: libvirt-7.6.0/src/conf/domain_validate.c
-===================================================================
---- libvirt-7.6.0.orig/src/conf/domain_validate.c
-+++ libvirt-7.6.0/src/conf/domain_validate.c
-@@ -470,7 +470,7 @@ virDomainDiskDefValidateSourceChainOne(c
-         }
-     }
- 
--    /* internal snapshots and config files are currently supported only with rbd: */
-+    /* internal snapshots are currently supported only with rbd: */
-     if (virStorageSourceGetActualType(src) != VIR_STORAGE_TYPE_NETWORK &&
-         src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD) {
-         if (src->snapshot) {
-@@ -479,11 +479,15 @@ virDomainDiskDefValidateSourceChainOne(c
-                              "only with 'rbd' disks"));
-             return -1;
-         }
--
-+    }
-+    /* config files are currently supported only with rbd and vitastor: */
-+    if (virStorageSourceGetActualType(src) != VIR_STORAGE_TYPE_NETWORK &&
-+        src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD &&
-+        src->protocol != VIR_STORAGE_NET_PROTOCOL_VITASTOR) {
-         if (src->configFile) {
-             virReportError(VIR_ERR_XML_ERROR, "%s",
-                            _("<config> element is currently supported "
--                             "only with 'rbd' disks"));
-+                             "only with 'rbd' and 'vitastor' disks"));
-             return -1;
-         }
-     }
-Index: libvirt-7.6.0/src/conf/storage_conf.c
-===================================================================
---- libvirt-7.6.0.orig/src/conf/storage_conf.c
-+++ libvirt-7.6.0/src/conf/storage_conf.c
-@@ -60,7 +60,7 @@ VIR_ENUM_IMPL(virStoragePool,
-               "logical", "disk", "iscsi",
-               "iscsi-direct", "scsi", "mpath",
-               "rbd", "sheepdog", "gluster",
--              "zfs", "vstorage",
-+              "zfs", "vstorage", "vitastor",
- );
- 
- VIR_ENUM_IMPL(virStoragePoolFormatFileSystem,
-@@ -246,6 +246,18 @@ static virStoragePoolTypeInfo poolTypeIn
-           .formatToString = virStorageFileFormatTypeToString,
-       }
-     },
-+    {.poolType = VIR_STORAGE_POOL_VITASTOR,
-+     .poolOptions = {
-+         .flags = (VIR_STORAGE_POOL_SOURCE_HOST |
-+                   VIR_STORAGE_POOL_SOURCE_NETWORK |
-+                   VIR_STORAGE_POOL_SOURCE_NAME),
-+      },
-+      .volOptions = {
-+          .defaultFormat = VIR_STORAGE_FILE_RAW,
-+          .formatFromString = virStorageVolumeFormatFromString,
-+          .formatToString = virStorageFileFormatTypeToString,
-+      }
-+    },
-     {.poolType = VIR_STORAGE_POOL_SHEEPDOG,
-      .poolOptions = {
-          .flags = (VIR_STORAGE_POOL_SOURCE_HOST |
-@@ -546,6 +558,11 @@ virStoragePoolDefParseSource(xmlXPathCon
-                        _("element 'name' is mandatory for RBD pool"));
-         return -1;
-     }
-+    if (pool_type == VIR_STORAGE_POOL_VITASTOR && source->name == NULL) {
-+        virReportError(VIR_ERR_XML_ERROR, "%s",
-+                       _("element 'name' is mandatory for Vitastor pool"));
-+        return -1;
-+    }
- 
-     if (options->formatFromString) {
-         g_autofree char *format = NULL;
-@@ -1182,6 +1199,7 @@ virStoragePoolDefFormatBuf(virBuffer *bu
-     /* RBD, Sheepdog, Gluster and Iscsi-direct devices are not local block devs nor
-      * files, so they don't have a target */
-     if (def->type != VIR_STORAGE_POOL_RBD &&
-+        def->type != VIR_STORAGE_POOL_VITASTOR &&
-         def->type != VIR_STORAGE_POOL_SHEEPDOG &&
-         def->type != VIR_STORAGE_POOL_GLUSTER &&
-         def->type != VIR_STORAGE_POOL_ISCSI_DIRECT) {
-Index: libvirt-7.6.0/src/conf/storage_conf.h
-===================================================================
---- libvirt-7.6.0.orig/src/conf/storage_conf.h
-+++ libvirt-7.6.0/src/conf/storage_conf.h
-@@ -106,6 +106,7 @@ typedef enum {
-     VIR_STORAGE_POOL_GLUSTER,  /* Gluster device */
-     VIR_STORAGE_POOL_ZFS,      /* ZFS */
-     VIR_STORAGE_POOL_VSTORAGE, /* Virtuozzo Storage */
-+    VIR_STORAGE_POOL_VITASTOR, /* Vitastor */
- 
-     VIR_STORAGE_POOL_LAST,
- } virStoragePoolType;
-@@ -465,6 +466,7 @@ VIR_ENUM_DECL(virStoragePartedFs);
-                  VIR_CONNECT_LIST_STORAGE_POOLS_SCSI     | \
-                  VIR_CONNECT_LIST_STORAGE_POOLS_MPATH    | \
-                  VIR_CONNECT_LIST_STORAGE_POOLS_RBD      | \
-+                 VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR | \
-                  VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG | \
-                  VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER  | \
-                  VIR_CONNECT_LIST_STORAGE_POOLS_ZFS      | \
-Index: libvirt-7.6.0/src/conf/storage_source_conf.c
-===================================================================
---- libvirt-7.6.0.orig/src/conf/storage_source_conf.c
-+++ libvirt-7.6.0/src/conf/storage_source_conf.c
-@@ -85,6 +85,7 @@ VIR_ENUM_IMPL(virStorageNetProtocol,
-               "ssh",
-               "vxhs",
-               "nfs",
-+              "vitastor",
- );
- 
- 
-@@ -1262,6 +1263,7 @@ virStorageSourceNetworkDefaultPort(virSt
-         case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
-             return 24007;
- 
-+        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-         case VIR_STORAGE_NET_PROTOCOL_RBD:
-             /* we don't provide a default for RBD */
-             return 0;
-Index: libvirt-7.6.0/src/conf/storage_source_conf.h
-===================================================================
---- libvirt-7.6.0.orig/src/conf/storage_source_conf.h
-+++ libvirt-7.6.0/src/conf/storage_source_conf.h
-@@ -127,6 +127,7 @@ typedef enum {
-     VIR_STORAGE_NET_PROTOCOL_SSH,
-     VIR_STORAGE_NET_PROTOCOL_VXHS,
-     VIR_STORAGE_NET_PROTOCOL_NFS,
-+    VIR_STORAGE_NET_PROTOCOL_VITASTOR,
- 
-     VIR_STORAGE_NET_PROTOCOL_LAST
- } virStorageNetProtocol;
-Index: libvirt-7.6.0/src/conf/virstorageobj.c
-===================================================================
---- libvirt-7.6.0.orig/src/conf/virstorageobj.c
-+++ libvirt-7.6.0/src/conf/virstorageobj.c
-@@ -1481,6 +1481,7 @@ virStoragePoolObjSourceFindDuplicateCb(c
-             return 1;
-         break;
- 
-+    case VIR_STORAGE_POOL_VITASTOR:
-     case VIR_STORAGE_POOL_RBD:
-     case VIR_STORAGE_POOL_LAST:
-         break;
-@@ -1980,6 +1981,8 @@ virStoragePoolObjMatch(virStoragePoolObj
-                (obj->def->type == VIR_STORAGE_POOL_MPATH))   ||
-               (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_RBD) &&
-                (obj->def->type == VIR_STORAGE_POOL_RBD))     ||
-+              (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR) &&
-+               (obj->def->type == VIR_STORAGE_POOL_VITASTOR)) ||
-               (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG) &&
-                (obj->def->type == VIR_STORAGE_POOL_SHEEPDOG)) ||
-               (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER) &&
-Index: libvirt-7.6.0/src/libvirt-storage.c
-===================================================================
---- libvirt-7.6.0.orig/src/libvirt-storage.c
-+++ libvirt-7.6.0/src/libvirt-storage.c
-@@ -92,6 +92,7 @@ virStoragePoolGetConnect(virStoragePoolP
-  * VIR_CONNECT_LIST_STORAGE_POOLS_SCSI
-  * VIR_CONNECT_LIST_STORAGE_POOLS_MPATH
-  * VIR_CONNECT_LIST_STORAGE_POOLS_RBD
-+ * VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR
-  * VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG
-  * VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER
-  * VIR_CONNECT_LIST_STORAGE_POOLS_ZFS
-Index: libvirt-7.6.0/src/libxl/libxl_conf.c
-===================================================================
---- libvirt-7.6.0.orig/src/libxl/libxl_conf.c
-+++ libvirt-7.6.0/src/libxl/libxl_conf.c
-@@ -972,6 +972,7 @@ libxlMakeNetworkDiskSrcStr(virStorageSou
-     case VIR_STORAGE_NET_PROTOCOL_SSH:
-     case VIR_STORAGE_NET_PROTOCOL_VXHS:
-     case VIR_STORAGE_NET_PROTOCOL_NFS:
-+    case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-     case VIR_STORAGE_NET_PROTOCOL_LAST:
-     case VIR_STORAGE_NET_PROTOCOL_NONE:
-         virReportError(VIR_ERR_NO_SUPPORT,
-Index: libvirt-7.6.0/src/libxl/xen_xl.c
-===================================================================
---- libvirt-7.6.0.orig/src/libxl/xen_xl.c
-+++ libvirt-7.6.0/src/libxl/xen_xl.c
-@@ -1540,6 +1540,7 @@ xenFormatXLDiskSrcNet(virStorageSource *
-     case VIR_STORAGE_NET_PROTOCOL_SSH:
-     case VIR_STORAGE_NET_PROTOCOL_VXHS:
-     case VIR_STORAGE_NET_PROTOCOL_NFS:
-+    case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-     case VIR_STORAGE_NET_PROTOCOL_LAST:
-     case VIR_STORAGE_NET_PROTOCOL_NONE:
-         virReportError(VIR_ERR_NO_SUPPORT,
-Index: libvirt-7.6.0/src/qemu/qemu_block.c
-===================================================================
---- libvirt-7.6.0.orig/src/qemu/qemu_block.c
-+++ libvirt-7.6.0/src/qemu/qemu_block.c
-@@ -916,6 +916,38 @@ qemuBlockStorageSourceGetRBDProps(virSto
- 
- 
- static virJSONValue *
-+qemuBlockStorageSourceGetVitastorProps(virStorageSource *src)
-+{
-+    virJSONValue *ret = NULL;
-+    virStorageNetHostDef *host;
-+    size_t i;
-+    g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
-+    g_autofree char *etcd = NULL;
-+
-+    for (i = 0; i < src->nhosts; i++) {
-+        host = src->hosts + i;
-+        if ((virStorageNetHostTransport)host->transport != VIR_STORAGE_NET_HOST_TRANS_TCP) {
-+            return NULL;
-+        }
-+        virBufferAsprintf(&buf, i > 0 ? ",%s:%u" : "%s:%u", host->name, host->port);
-+    }
-+    if (src->nhosts > 0) {
-+        etcd = virBufferContentAndReset(&buf);
-+    }
-+
-+    if (virJSONValueObjectCreate(&ret,
-+                                 "S:etcd-host", etcd,
-+                                 "S:etcd-prefix", src->query,
-+                                 "S:config-path", src->configFile,
-+                                 "s:image", src->path,
-+                                 NULL) < 0)
-+        return NULL;
-+
-+    return ret;
-+}
-+
-+
-+static virJSONValue *
- qemuBlockStorageSourceGetSheepdogProps(virStorageSource *src)
- {
-     g_autoptr(virJSONValue) serverprops = NULL;
-@@ -1205,6 +1237,12 @@ qemuBlockStorageSourceGetBackendProps(vi
-                 return NULL;
-             break;
- 
-+        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-+            driver = "vitastor";
-+            if (!(fileprops = qemuBlockStorageSourceGetVitastorProps(src)))
-+                return NULL;
-+            break;
-+
-         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
-             driver = "sheepdog";
-             if (!(fileprops = qemuBlockStorageSourceGetSheepdogProps(src)))
-@@ -2219,6 +2257,7 @@ qemuBlockGetBackingStoreString(virStorag
- 
-             case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
-             case VIR_STORAGE_NET_PROTOCOL_RBD:
-+            case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-             case VIR_STORAGE_NET_PROTOCOL_VXHS:
-             case VIR_STORAGE_NET_PROTOCOL_NFS:
-             case VIR_STORAGE_NET_PROTOCOL_SSH:
-@@ -2596,6 +2635,12 @@ qemuBlockStorageSourceCreateGetStoragePr
-                 return -1;
-             break;
- 
-+        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-+            driver = "vitastor";
-+            if (!(location = qemuBlockStorageSourceGetVitastorProps(src)))
-+                return -1;
-+            break;
-+
-         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
-             driver = "sheepdog";
-             if (!(location = qemuBlockStorageSourceGetSheepdogProps(src)))
-Index: libvirt-7.6.0/src/qemu/qemu_command.c
-===================================================================
---- libvirt-7.6.0.orig/src/qemu/qemu_command.c
-+++ libvirt-7.6.0/src/qemu/qemu_command.c
-@@ -1074,6 +1074,43 @@ qemuBuildNetworkDriveStr(virStorageSourc
-             ret = virBufferContentAndReset(&buf);
-             break;
- 
-+        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-+            if (strchr(src->path, ':')) {
-+                virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
-+                               _("':' not allowed in Vitastor source volume name '%s'"),
-+                               src->path);
-+                return NULL;
-+            }
-+
-+            virBufferStrcat(&buf, "vitastor:image=", src->path, NULL);
-+
-+            if (src->nhosts > 0) {
-+                virBufferAddLit(&buf, ":etcd-host=");
-+                for (i = 0; i < src->nhosts; i++) {
-+                    if (i)
-+                        virBufferAddLit(&buf, ",");
-+
-+                    /* assume host containing : is ipv6 */
-+                    if (strchr(src->hosts[i].name, ':'))
-+                        virBufferEscape(&buf, '\\', ":", "[%s]",
-+                                        src->hosts[i].name);
-+                    else
-+                        virBufferAsprintf(&buf, "%s", src->hosts[i].name);
-+
-+                    if (src->hosts[i].port)
-+                        virBufferAsprintf(&buf, "\\:%u", src->hosts[i].port);
-+                }
-+            }
-+
-+            if (src->configFile)
-+                virBufferEscape(&buf, '\\', ":", ":config-path=%s", src->configFile);
-+
-+            if (src->query)
-+                virBufferEscape(&buf, '\\', ":", ":etcd-prefix=%s", src->query);
-+
-+            ret = virBufferContentAndReset(&buf);
-+            break;
-+
-         case VIR_STORAGE_NET_PROTOCOL_VXHS:
-             virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
-                            _("VxHS protocol does not support URI syntax"));
-Index: libvirt-7.6.0/src/qemu/qemu_domain.c
-===================================================================
---- libvirt-7.6.0.orig/src/qemu/qemu_domain.c
-+++ libvirt-7.6.0/src/qemu/qemu_domain.c
-@@ -4900,7 +4900,8 @@ qemuDomainValidateStorageSource(virStora
-     if (src->query &&
-         (actualType != VIR_STORAGE_TYPE_NETWORK ||
-          (src->protocol != VIR_STORAGE_NET_PROTOCOL_HTTPS &&
--          src->protocol != VIR_STORAGE_NET_PROTOCOL_HTTP))) {
-+          src->protocol != VIR_STORAGE_NET_PROTOCOL_HTTP &&
-+          src->protocol != VIR_STORAGE_NET_PROTOCOL_VITASTOR))) {
-         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
-                        _("query is supported only with HTTP(S) protocols"));
-         return -1;
-@@ -10102,6 +10103,7 @@ qemuDomainPrepareStorageSourceTLS(virSto
-         break;
- 
-     case VIR_STORAGE_NET_PROTOCOL_RBD:
-+    case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-     case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
-     case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
-     case VIR_STORAGE_NET_PROTOCOL_ISCSI:
-Index: libvirt-7.6.0/src/qemu/qemu_snapshot.c
-===================================================================
---- libvirt-7.6.0.orig/src/qemu/qemu_snapshot.c
-+++ libvirt-7.6.0/src/qemu/qemu_snapshot.c
-@@ -402,6 +402,7 @@ qemuSnapshotPrepareDiskExternalInactive(
-         case VIR_STORAGE_NET_PROTOCOL_NONE:
-         case VIR_STORAGE_NET_PROTOCOL_NBD:
-         case VIR_STORAGE_NET_PROTOCOL_RBD:
-+        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
-         case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
-         case VIR_STORAGE_NET_PROTOCOL_ISCSI:
-@@ -494,6 +495,7 @@ qemuSnapshotPrepareDiskExternalActive(vi
-         case VIR_STORAGE_NET_PROTOCOL_NONE:
-         case VIR_STORAGE_NET_PROTOCOL_NBD:
-         case VIR_STORAGE_NET_PROTOCOL_RBD:
-+        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
-         case VIR_STORAGE_NET_PROTOCOL_ISCSI:
-         case VIR_STORAGE_NET_PROTOCOL_HTTP:
-@@ -647,6 +649,7 @@ qemuSnapshotPrepareDiskInternal(virDomai
-         case VIR_STORAGE_NET_PROTOCOL_NONE:
-         case VIR_STORAGE_NET_PROTOCOL_NBD:
-         case VIR_STORAGE_NET_PROTOCOL_RBD:
-+        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
-         case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
-         case VIR_STORAGE_NET_PROTOCOL_ISCSI:
-Index: libvirt-7.6.0/src/storage/storage_driver.c
-===================================================================
---- libvirt-7.6.0.orig/src/storage/storage_driver.c
-+++ libvirt-7.6.0/src/storage/storage_driver.c
-@@ -1644,6 +1644,7 @@ storageVolLookupByPathCallback(virStorag
- 
-         case VIR_STORAGE_POOL_GLUSTER:
-         case VIR_STORAGE_POOL_RBD:
-+        case VIR_STORAGE_POOL_VITASTOR:
-         case VIR_STORAGE_POOL_SHEEPDOG:
-         case VIR_STORAGE_POOL_ZFS:
-         case VIR_STORAGE_POOL_LAST:
-Index: libvirt-7.6.0/src/storage_file/storage_source_backingstore.c
-===================================================================
---- libvirt-7.6.0.orig/src/storage_file/storage_source_backingstore.c
-+++ libvirt-7.6.0/src/storage_file/storage_source_backingstore.c
-@@ -285,6 +285,75 @@ virStorageSourceParseRBDColonString(cons
- 
- 
- static int
-+virStorageSourceParseVitastorColonString(const char *colonstr,
-+                                         virStorageSource *src)
-+{
-+    char *p, *e, *next;
-+    g_autofree char *options = NULL;
-+
-+    /* optionally skip the "vitastor:" prefix if provided */
-+    if (STRPREFIX(colonstr, "vitastor:"))
-+        colonstr += strlen("vitastor:");
-+
-+    options = g_strdup(colonstr);
-+
-+    p = options;
-+    while (*p) {
-+        /* find : delimiter or end of string */
-+        for (e = p; *e && *e != ':'; ++e) {
-+            if (*e == '\\') {
-+                e++;
-+                if (*e == '\0')
-+                    break;
-+            }
-+        }
-+        if (*e == '\0') {
-+            next = e;    /* last kv pair */
-+        } else {
-+            next = e + 1;
-+            *e = '\0';
-+        }
-+
-+        if (STRPREFIX(p, "image=")) {
-+            src->path = g_strdup(p + strlen("image="));
-+        } else if (STRPREFIX(p, "etcd-prefix=")) {
-+            src->query = g_strdup(p + strlen("etcd-prefix="));
-+        } else if (STRPREFIX(p, "config-path=")) {
-+            src->configFile = g_strdup(p + strlen("config-path="));
-+        } else if (STRPREFIX(p, "etcd-host=")) {
-+            char *h, *sep;
-+
-+            h = p + strlen("etcd-host=");
-+            while (h < e) {
-+                for (sep = h; sep < e; ++sep) {
-+                    if (*sep == '\\' && (sep[1] == ',' ||
-+                                         sep[1] == ';' ||
-+                                         sep[1] == ' ')) {
-+                        *sep = '\0';
-+                        sep += 2;
-+                        break;
-+                    }
-+                }
-+
-+                if (virStorageSourceRBDAddHost(src, h) < 0)
-+                    return -1;
-+
-+                h = sep;
-+            }
-+        }
-+
-+        p = next;
-+    }
-+
-+    if (!src->path) {
-+        return -1;
-+    }
-+
-+    return 0;
-+}
-+
-+
-+static int
- virStorageSourceParseNBDColonString(const char *nbdstr,
-                                     virStorageSource *src)
- {
-@@ -396,6 +465,11 @@ virStorageSourceParseBackingColon(virSto
-             return -1;
-         break;
- 
-+    case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
-+        if (virStorageSourceParseVitastorColonString(path, src) < 0)
-+            return -1;
-+        break;
-+
-     case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
-     case VIR_STORAGE_NET_PROTOCOL_LAST:
-     case VIR_STORAGE_NET_PROTOCOL_NONE:
-@@ -985,6 +1059,54 @@ virStorageSourceParseBackingJSONRBD(virS
- }
- 
- static int
-+virStorageSourceParseBackingJSONVitastor(virStorageSource *src,
-+                                         virJSONValue *json,
-+                                         const char *jsonstr G_GNUC_UNUSED,
-+                                         int opaque G_GNUC_UNUSED)
-+{
-+    const char *filename;
-+    const char *image = virJSONValueObjectGetString(json, "image");
-+    const char *conf = virJSONValueObjectGetString(json, "config-path");
-+    const char *etcd_prefix = virJSONValueObjectGetString(json, "etcd-prefix");
-+    virJSONValue *servers = virJSONValueObjectGetArray(json, "server");
-+    size_t nservers;
-+    size_t i;
-+
-+    src->type = VIR_STORAGE_TYPE_NETWORK;
-+    src->protocol = VIR_STORAGE_NET_PROTOCOL_VITASTOR;
-+
-+    /* legacy syntax passed via 'filename' option */
-+    if ((filename = virJSONValueObjectGetString(json, "filename")))
-+        return virStorageSourceParseVitastorColonString(filename, src);
-+
-+    if (!image) {
-+        virReportError(VIR_ERR_INVALID_ARG, "%s",
-+                       _("missing image name in Vitastor backing volume "
-+                         "JSON specification"));
-+        return -1;
-+    }
-+
-+    src->path = g_strdup(image);
-+    src->configFile = g_strdup(conf);
-+    src->query = g_strdup(etcd_prefix);
-+
-+    if (servers) {
-+        nservers = virJSONValueArraySize(servers);
-+
-+        src->hosts = g_new0(virStorageNetHostDef, nservers);
-+        src->nhosts = nservers;
-+
-+        for (i = 0; i < nservers; i++) {
-+            if (virStorageSourceParseBackingJSONInetSocketAddress(src->hosts + i,
-+                                                                  virJSONValueArrayGet(servers, i)) < 0)
-+                return -1;
-+        }
-+    }
-+
-+    return 0;
-+}
-+
-+static int
- virStorageSourceParseBackingJSONRaw(virStorageSource *src,
-                                     virJSONValue *json,
-                                     const char *jsonstr,
-@@ -1162,6 +1284,7 @@ static const struct virStorageSourceJSON
-     {"sheepdog", false, virStorageSourceParseBackingJSONSheepdog, 0},
-     {"ssh", false, virStorageSourceParseBackingJSONSSH, 0},
-     {"rbd", false, virStorageSourceParseBackingJSONRBD, 0},
-+    {"vitastor", false, virStorageSourceParseBackingJSONVitastor, 0},
-     {"raw", true, virStorageSourceParseBackingJSONRaw, 0},
-     {"nfs", false, virStorageSourceParseBackingJSONNFS, 0},
-     {"vxhs", false, virStorageSourceParseBackingJSONVxHS, 0},
-Index: libvirt-7.6.0/src/test/test_driver.c
-===================================================================
---- libvirt-7.6.0.orig/src/test/test_driver.c
-+++ libvirt-7.6.0/src/test/test_driver.c
-@@ -7193,6 +7193,7 @@ testStorageVolumeTypeForPool(int pooltyp
-     case VIR_STORAGE_POOL_ISCSI_DIRECT:
-     case VIR_STORAGE_POOL_GLUSTER:
-     case VIR_STORAGE_POOL_RBD:
-+    case VIR_STORAGE_POOL_VITASTOR:
-         return VIR_STORAGE_VOL_NETWORK;
-     case VIR_STORAGE_POOL_LOGICAL:
-     case VIR_STORAGE_POOL_DISK:
-Index: libvirt-7.6.0/tests/storagepoolcapsschemadata/poolcaps-fs.xml
-===================================================================
---- libvirt-7.6.0.orig/tests/storagepoolcapsschemadata/poolcaps-fs.xml
-+++ libvirt-7.6.0/tests/storagepoolcapsschemadata/poolcaps-fs.xml
-@@ -204,4 +204,11 @@
-       </enum>
-     </volOptions>
-   </pool>
-+  <pool type='vitastor' supported='no'>
-+    <volOptions>
-+      <defaultFormat type='raw'/>
-+      <enum name='targetFormatType'>
-+      </enum>
-+    </volOptions>
-+  </pool>
- </storagepoolCapabilities>
-Index: libvirt-7.6.0/tests/storagepoolcapsschemadata/poolcaps-full.xml
-===================================================================
---- libvirt-7.6.0.orig/tests/storagepoolcapsschemadata/poolcaps-full.xml
-+++ libvirt-7.6.0/tests/storagepoolcapsschemadata/poolcaps-full.xml
-@@ -204,4 +204,11 @@
-       </enum>
-     </volOptions>
-   </pool>
-+  <pool type='vitastor' supported='yes'>
-+    <volOptions>
-+      <defaultFormat type='raw'/>
-+      <enum name='targetFormatType'>
-+      </enum>
-+    </volOptions>
-+  </pool>
- </storagepoolCapabilities>
-Index: libvirt-7.6.0/tests/storagepoolxml2argvtest.c
-===================================================================
---- libvirt-7.6.0.orig/tests/storagepoolxml2argvtest.c
-+++ libvirt-7.6.0/tests/storagepoolxml2argvtest.c
-@@ -68,6 +68,7 @@ testCompareXMLToArgvFiles(bool shouldFai
-     case VIR_STORAGE_POOL_GLUSTER:
-     case VIR_STORAGE_POOL_ZFS:
-     case VIR_STORAGE_POOL_VSTORAGE:
-+    case VIR_STORAGE_POOL_VITASTOR:
-     case VIR_STORAGE_POOL_LAST:
-     default:
-         VIR_TEST_DEBUG("pool type '%s' has no xml2argv test", defTypeStr);
-Index: libvirt-7.6.0/tools/virsh-pool.c
-===================================================================
---- libvirt-7.6.0.orig/tools/virsh-pool.c
-+++ libvirt-7.6.0/tools/virsh-pool.c
-@@ -1231,6 +1231,9 @@ cmdPoolList(vshControl *ctl, const vshCm
-             case VIR_STORAGE_POOL_VSTORAGE:
-                 flags |= VIR_CONNECT_LIST_STORAGE_POOLS_VSTORAGE;
-                 break;
-+            case VIR_STORAGE_POOL_VITASTOR:
-+                flags |= VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR;
-+                break;
-             case VIR_STORAGE_POOL_LAST:
-                 break;
-             }

patches/libvirt-example.xml

@@ -15,10 +15,9 @@
       <target dev='vda' bus='virtio' />
       <driver name='qemu' type='raw' />
       <!-- name is Vitastor image name -->
+      <!-- config (optional) is the path to Vitastor's configuration file -->
       <!-- query (optional) is Vitastor's etcd_prefix -->
-      <source protocol='vitastor' name='debian9' query='/vitastor'>
-        <!-- config (optional) is the path to Vitastor's configuration file -->
-        <config file='/etc/vitastor/vitastor.conf' />
+      <source protocol='vitastor' name='debian9' query='/vitastor' config='/etc/vitastor/vitastor.conf'>
         <!-- hosts = etcd addresses -->
         <host name='192.168.7.2' port='2379' />
       </source>

patches/nova-20.diff

@@ -1,5 +1,5 @@
 diff --git a/nova/virt/image/model.py b/nova/virt/image/model.py
-index 971f7e9c07..ec3fca72cb 100644
+index 971f7e9c07..70ed70d5e2 100644
 --- a/nova/virt/image/model.py
 +++ b/nova/virt/image/model.py
 @@ -129,3 +129,22 @@ class RBDImage(Image):
@@ -19,7 +19,7 @@ index 971f7e9c07..ec3fca72cb 100644
 +        :param etcd_prefix: etcd prefix (optional)
 +        :param config_path: path to the configuration (optional)
 +        """
-+        super(VitastorImage, self).__init__(FORMAT_RAW)
++        super(RBDImage, self).__init__(FORMAT_RAW)
 +
 +        self.name = name
 +        self.etcd_address = etcd_address
@@ -48,7 +48,7 @@ index 5358f3766a..ebe3d6effb 100644
  
      info = nova.privsep.qemu.privileged_qemu_img_info(path, format=format)
 diff --git a/nova/virt/libvirt/config.py b/nova/virt/libvirt/config.py
-index f9475776b3..a2e18aab67 100644
+index f9475776b3..51573fe41d 100644
 --- a/nova/virt/libvirt/config.py
 +++ b/nova/virt/libvirt/config.py
 @@ -1060,6 +1060,8 @@ class LibvirtConfigGuestDisk(LibvirtConfigGuestDevice):
@@ -60,19 +60,18 @@ index f9475776b3..a2e18aab67 100644
          self.source_name = None
          self.source_hosts = []
          self.source_ports = []
-@@ -1189,6 +1191,10 @@ class LibvirtConfigGuestDisk(LibvirtConfigGuestDevice):
-             source = etree.Element("source", protocol=self.source_protocol)
+@@ -1186,7 +1188,8 @@ class LibvirtConfigGuestDisk(LibvirtConfigGuestDevice):
+         elif self.source_type == "mount":
+             dev.append(etree.Element("source", dir=self.source_path))
+         elif self.source_type == "network" and self.source_protocol:
+-            source = etree.Element("source", protocol=self.source_protocol)
++            source = etree.Element("source", protocol=self.source_protocol,
++                query=self.source_query, config=self.source_config)
              if self.source_name is not None:
                  source.set('name', self.source_name)
-+            if self.source_query is not None:
-+                source.set('query', self.source_query)
-+            if self.source_config is not None:
-+                source.append(etree.Element('config', file=self.source_config))
              hosts_info = zip(self.source_hosts, self.source_ports)
-             for name, port in hosts_info:
-                 host = etree.Element('host', name=name)
 diff --git a/nova/virt/libvirt/driver.py b/nova/virt/libvirt/driver.py
-index 391231c527..f38faa1608 100644
+index 391231c527..34dc60dcdd 100644
 --- a/nova/virt/libvirt/driver.py
 +++ b/nova/virt/libvirt/driver.py
 @@ -179,6 +179,7 @@ VOLUME_DRIVERS = {

patches/nova-21.diff

@@ -1,288 +0,0 @@
-diff --git a/nova/virt/image/model.py b/nova/virt/image/model.py
-index 971f7e9c07..ec3fca72cb 100644
---- a/nova/virt/image/model.py
-+++ b/nova/virt/image/model.py
-@@ -129,3 +129,22 @@ class RBDImage(Image):
-         self.user = user
-         self.password = password
-         self.servers = servers
-+
-+
-+class VitastorImage(Image):
-+    """Class for images in a remote Vitastor cluster"""
-+
-+    def __init__(self, name, etcd_address = None, etcd_prefix = None, config_path = None):
-+        """Create a new Vitastor image object
-+
-+        :param name: name of the image
-+        :param etcd_address: etcd URL(s) (optional)
-+        :param etcd_prefix: etcd prefix (optional)
-+        :param config_path: path to the configuration (optional)
-+        """
-+        super(VitastorImage, self).__init__(FORMAT_RAW)
-+
-+        self.name = name
-+        self.etcd_address = etcd_address
-+        self.etcd_prefix = etcd_prefix
-+        self.config_path = config_path
-diff --git a/nova/virt/images.py b/nova/virt/images.py
-index 5358f3766a..ebe3d6effb 100644
---- a/nova/virt/images.py
-+++ b/nova/virt/images.py
-@@ -41,7 +41,7 @@ IMAGE_API = glance.API()
- 
- def qemu_img_info(path, format=None):
-     """Return an object containing the parsed output from qemu-img info."""
--    if not os.path.exists(path) and not path.startswith('rbd:'):
-+    if not os.path.exists(path) and not path.startswith('rbd:') and not path.startswith('vitastor:'):
-         raise exception.DiskNotFound(location=path)
- 
-     info = nova.privsep.qemu.unprivileged_qemu_img_info(path, format=format)
-@@ -50,7 +50,7 @@ def qemu_img_info(path, format=None):
- 
- def privileged_qemu_img_info(path, format=None, output_format='json'):
-     """Return an object containing the parsed output from qemu-img info."""
--    if not os.path.exists(path) and not path.startswith('rbd:'):
-+    if not os.path.exists(path) and not path.startswith('rbd:') and not path.startswith('vitastor:'):
-         raise exception.DiskNotFound(location=path)
- 
-     info = nova.privsep.qemu.privileged_qemu_img_info(path, format=format)
-diff --git a/nova/virt/libvirt/config.py b/nova/virt/libvirt/config.py
-index ea525648b3..d7aa798954 100644
---- a/nova/virt/libvirt/config.py
-+++ b/nova/virt/libvirt/config.py
-@@ -1005,6 +1005,8 @@ class LibvirtConfigGuestDisk(LibvirtConfigGuestDevice):
-         self.driver_iommu = False
-         self.source_path = None
-         self.source_protocol = None
-+        self.source_query = None
-+        self.source_config = None
-         self.source_name = None
-         self.source_hosts = []
-         self.source_ports = []
-@@ -1133,6 +1135,10 @@ class LibvirtConfigGuestDisk(LibvirtConfigGuestDevice):
-             source = etree.Element("source", protocol=self.source_protocol)
-             if self.source_name is not None:
-                 source.set('name', self.source_name)
-+            if self.source_query is not None:
-+                source.set('query', self.source_query)
-+            if self.source_config is not None:
-+                source.append(etree.Element('config', file=self.source_config))
-             hosts_info = zip(self.source_hosts, self.source_ports)
-             for name, port in hosts_info:
-                 host = etree.Element('host', name=name)
-diff --git a/nova/virt/libvirt/driver.py b/nova/virt/libvirt/driver.py
-index fbd033690a..74dc59ce87 100644
---- a/nova/virt/libvirt/driver.py
-+++ b/nova/virt/libvirt/driver.py
-@@ -180,6 +180,7 @@ libvirt_volume_drivers = [
-     'local=nova.virt.libvirt.volume.volume.LibvirtVolumeDriver',
-     'fake=nova.virt.libvirt.volume.volume.LibvirtFakeVolumeDriver',
-     'rbd=nova.virt.libvirt.volume.net.LibvirtNetVolumeDriver',
-+    'vitastor=nova.virt.libvirt.volume.vitastor.LibvirtVitastorVolumeDriver',
-     'nfs=nova.virt.libvirt.volume.nfs.LibvirtNFSVolumeDriver',
-     'smbfs=nova.virt.libvirt.volume.smbfs.LibvirtSMBFSVolumeDriver',
-     'fibre_channel='
-@@ -287,10 +288,10 @@ class LibvirtDriver(driver.ComputeDriver):
-         # This prevents the risk of one test setting a capability
-         # which bleeds over into other tests.
- 
--        # LVM and RBD require raw images. If we are not configured to
-+        # LVM, RBD, Vitastor require raw images. If we are not configured to
-         # force convert images into raw format, then we _require_ raw
-         # images only.
--        raw_only = ('rbd', 'lvm')
-+        raw_only = ('rbd', 'lvm', 'vitastor')
-         requires_raw_image = (CONF.libvirt.images_type in raw_only and
-                               not CONF.force_raw_images)
-         requires_ploop_image = CONF.libvirt.virt_type == 'parallels'
-@@ -703,12 +704,12 @@ class LibvirtDriver(driver.ComputeDriver):
-         # Some imagebackends are only able to import raw disk images,
-         # and will fail if given any other format. See the bug
-         # https://bugs.launchpad.net/nova/+bug/1816686 for more details.
--        if CONF.libvirt.images_type in ('rbd',):
-+        if CONF.libvirt.images_type in ('rbd', 'vitastor'):
-             if not CONF.force_raw_images:
-                 msg = _("'[DEFAULT]/force_raw_images = False' is not "
--                        "allowed with '[libvirt]/images_type = rbd'. "
-+                        "allowed with '[libvirt]/images_type = rbd' or 'vitastor'. "
-                         "Please check the two configs and if you really "
--                        "do want to use rbd as images_type, set "
-+                        "do want to use rbd or vitastor as images_type, set "
-                         "force_raw_images to True.")
-                 raise exception.InvalidConfiguration(msg)
- 
-@@ -2165,6 +2166,16 @@ class LibvirtDriver(driver.ComputeDriver):
-                     if connection_info['data'].get('auth_enabled'):
-                         username = connection_info['data']['auth_username']
-                         path = f"rbd:{volume_name}:id={username}"
-+                elif connection_info['driver_volume_type'] == 'vitastor':
-+                    volume_name = connection_info['data']['name']
-+                    path = 'vitastor:image='+volume_name.replace(':', '\\:')
-+                    for k in [ 'config_path', 'etcd_address', 'etcd_prefix' ]:
-+                        if k in connection_info['data']:
-+                            kk = k
-+                            if kk == 'etcd_address':
-+                                # FIXME use etcd_address in qemu driver
-+                                kk = 'etcd_host'
-+                            path += ":"+kk.replace('_', '-')+"="+connection_info['data'][k].replace(':', '\\:')
-                 else:
-                     path = 'unknown'
-                     raise exception.DiskNotFound(location='unknown')
-@@ -2440,8 +2451,8 @@ class LibvirtDriver(driver.ComputeDriver):
- 
-         image_format = CONF.libvirt.snapshot_image_format or source_type
- 
--        # NOTE(bfilippov): save lvm and rbd as raw
--        if image_format == 'lvm' or image_format == 'rbd':
-+        # NOTE(bfilippov): save lvm and rbd and vitastor as raw
-+        if image_format == 'lvm' or image_format == 'rbd' or image_format == 'vitastor':
-             image_format = 'raw'
- 
-         metadata = self._create_snapshot_metadata(instance.image_meta,
-@@ -2512,7 +2523,7 @@ class LibvirtDriver(driver.ComputeDriver):
-                               expected_state=task_states.IMAGE_UPLOADING)
- 
-             # TODO(nic): possibly abstract this out to the root_disk
--            if source_type == 'rbd' and live_snapshot:
-+            if (source_type == 'rbd' or source_type == 'vitastor') and live_snapshot:
-                 # Standard snapshot uses qemu-img convert from RBD which is
-                 # not safe to run with live_snapshot.
-                 live_snapshot = False
-@@ -3715,7 +3726,7 @@ class LibvirtDriver(driver.ComputeDriver):
-         # cleanup rescue volume
-         lvm.remove_volumes([lvmdisk for lvmdisk in self._lvm_disks(instance)
-                                 if lvmdisk.endswith('.rescue')])
--        if CONF.libvirt.images_type == 'rbd':
-+        if CONF.libvirt.images_type == 'rbd' or CONF.libvirt.images_type == 'vitastor':
-             filter_fn = lambda disk: (disk.startswith(instance.uuid) and
-                                       disk.endswith('.rescue'))
-             rbd_utils.RBDDriver().cleanup_volumes(filter_fn)
-@@ -3972,6 +3983,8 @@ class LibvirtDriver(driver.ComputeDriver):
-         # TODO(mikal): there is a bug here if images_type has
-         # changed since creation of the instance, but I am pretty
-         # sure that this bug already exists.
-+        if CONF.libvirt.images_type == 'vitastor':
-+            return 'vitastor'
-         return 'rbd' if CONF.libvirt.images_type == 'rbd' else 'raw'
- 
-     @staticmethod
-@@ -4370,10 +4383,10 @@ class LibvirtDriver(driver.ComputeDriver):
-                 finally:
-                     # NOTE(mikal): if the config drive was imported into RBD,
-                     # then we no longer need the local copy
--                    if CONF.libvirt.images_type == 'rbd':
-+                    if CONF.libvirt.images_type == 'rbd' or CONF.libvirt.images_type == 'vitastor':
-                         LOG.info('Deleting local config drive %(path)s '
--                                 'because it was imported into RBD.',
--                                 {'path': config_disk_local_path},
-+                                 'because it was imported into %(type).',
-+                                 {'path': config_disk_local_path, 'type': CONF.libvirt.images_type},
-                                  instance=instance)
-                         os.unlink(config_disk_local_path)
- 
-diff --git a/nova/virt/libvirt/utils.py b/nova/virt/libvirt/utils.py
-index c1dc34daf4..263965912f 100644
---- a/nova/virt/libvirt/utils.py
-+++ b/nova/virt/libvirt/utils.py
-@@ -399,6 +399,10 @@ def find_disk(guest: libvirt_guest.Guest) -> ty.Tuple[str, ty.Optional[str]]:
-             disk_path = disk.source_name
-             if disk_path:
-                 disk_path = 'rbd:' + disk_path
-+        elif not disk_path and disk.source_protocol == 'vitastor':
-+            disk_path = disk.source_name
-+            if disk_path:
-+                disk_path = 'vitastor:' + disk_path
- 
-     if not disk_path:
-         raise RuntimeError(_("Can't retrieve root device path "
-@@ -417,6 +421,8 @@ def get_disk_type_from_path(path: str) -> ty.Optional[str]:
-         return 'lvm'
-     elif path.startswith('rbd:'):
-         return 'rbd'
-+    elif path.startswith('vitastor:'):
-+        return 'vitastor'
-     elif (os.path.isdir(path) and
-           os.path.exists(os.path.join(path, "DiskDescriptor.xml"))):
-         return 'ploop'
-diff --git a/nova/virt/libvirt/volume/vitastor.py b/nova/virt/libvirt/volume/vitastor.py
-new file mode 100644
-index 0000000000..0256df62c1
---- /dev/null
-+++ b/nova/virt/libvirt/volume/vitastor.py
-@@ -0,0 +1,75 @@
-+# Copyright (c) 2021+, Vitaliy Filippov <vitalif@yourcmc.ru>
-+#
-+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-+#    not use this file except in compliance with the License. You may obtain
-+#    a copy of the License at
-+#
-+#         http://www.apache.org/licenses/LICENSE-2.0
-+#
-+#    Unless required by applicable law or agreed to in writing, software
-+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-+#    License for the specific language governing permissions and limitations
-+#    under the License.
-+
-+from os_brick import exception as os_brick_exception
-+from os_brick import initiator
-+from os_brick.initiator import connector
-+from oslo_log import log as logging
-+
-+import nova.conf
-+from nova import utils
-+from nova.virt.libvirt.volume import volume as libvirt_volume
-+
-+
-+CONF = nova.conf.CONF
-+LOG = logging.getLogger(__name__)
-+
-+
-+class LibvirtVitastorVolumeDriver(libvirt_volume.LibvirtBaseVolumeDriver):
-+    """Driver to attach Vitastor volumes to libvirt."""
-+    def __init__(self, host):
-+        super(LibvirtVitastorVolumeDriver, self).__init__(host, is_block_dev=False)
-+
-+    def connect_volume(self, connection_info, instance):
-+        pass
-+
-+    def disconnect_volume(self, connection_info, instance):
-+        pass
-+
-+    def get_config(self, connection_info, disk_info):
-+        """Returns xml for libvirt."""
-+        conf = super(LibvirtVitastorVolumeDriver, self).get_config(connection_info, disk_info)
-+        conf.source_type = 'network'
-+        conf.source_protocol = 'vitastor'
-+        conf.source_name = connection_info['data'].get('name')
-+        conf.source_query = connection_info['data'].get('etcd_prefix') or None
-+        conf.source_config = connection_info['data'].get('config_path') or None
-+        conf.source_hosts = []
-+        conf.source_ports = []
-+        addresses = connection_info['data'].get('etcd_address', '')
-+        if addresses:
-+            if not isinstance(addresses, list):
-+                addresses = addresses.split(',')
-+            for addr in addresses:
-+                if addr.startswith('https://'):
-+                    raise NotImplementedError('Vitastor block driver does not support SSL for etcd communication yet')
-+                if addr.startswith('http://'):
-+                    addr = addr[7:]
-+                addr = addr.rstrip('/')
-+                if addr.endswith('/v3'):
-+                    addr = addr[0:-3]
-+                p = addr.find('/')
-+                if p > 0:
-+                    raise NotImplementedError('libvirt does not support custom URL paths for Vitastor etcd yet. Use /etc/vitastor/vitastor.conf')
-+                p = addr.find(':')
-+                port = '2379'
-+                if p > 0:
-+                    port = addr[p+1:]
-+                    addr = addr[0:p]
-+                conf.source_hosts.append(addr)
-+                conf.source_ports.append(port)
-+        return conf
-+
-+    def extend_volume(self, connection_info, instance, requested_size):
-+        raise NotImplementedError

patches/pve-qemu-5.1-vitastor.patch

@@ -1,175 +0,0 @@
-Index: pve-qemu-kvm-5.1.0/qapi/block-core.json
-===================================================================
---- pve-qemu-kvm-5.1.0.orig/qapi/block-core.json
-+++ pve-qemu-kvm-5.1.0/qapi/block-core.json
-@@ -3041,7 +3041,7 @@
-             'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
-             'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
-             { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
--            'sheepdog', 'pbs',
-+            'sheepdog', 'pbs', 'vitastor',
-             'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
- 
- ##
-@@ -3889,6 +3889,28 @@
-             '*tag': 'str' } }
- 
- ##
-+# @BlockdevOptionsVitastor:
-+#
-+# Driver specific block device options for vitastor
-+#
-+# @image:       Image name
-+# @inode:       Inode number
-+# @pool:        Pool ID
-+# @size:        Desired image size in bytes
-+# @config-path: Path to Vitastor configuration
-+# @etcd-host:   etcd connection address(es)
-+# @etcd-prefix: etcd key/value prefix
-+##
-+{ 'struct': 'BlockdevOptionsVitastor',
-+  'data': { '*inode': 'uint64',
-+            '*pool': 'uint64',
-+            '*size': 'uint64',
-+            '*image': 'str',
-+            '*config-path': 'str',
-+            '*etcd-host': 'str',
-+            '*etcd-prefix': 'str' } }
-+
-+##
- # @ReplicationMode:
- #
- # An enumeration of replication modes.
-@@ -4234,6 +4256,7 @@
-       'replication': { 'type': 'BlockdevOptionsReplication',
-                        'if': 'defined(CONFIG_REPLICATION)' },
-       'sheepdog':   'BlockdevOptionsSheepdog',
-+      'vitastor':   'BlockdevOptionsVitastor',
-       'ssh':        'BlockdevOptionsSsh',
-       'throttle':   'BlockdevOptionsThrottle',
-       'vdi':        'BlockdevOptionsGenericFormat',
-@@ -4623,6 +4646,17 @@
-             '*cluster-size' :   'size' } }
- 
- ##
-+# @BlockdevCreateOptionsVitastor:
-+#
-+# Driver specific image creation options for Vitastor.
-+#
-+# @size: Size of the virtual disk in bytes
-+##
-+{ 'struct': 'BlockdevCreateOptionsVitastor',
-+  'data': { 'location':         'BlockdevOptionsVitastor',
-+            'size':             'size' } }
-+
-+##
- # @BlockdevVmdkSubformat:
- #
- # Subformat options for VMDK images
-@@ -4884,6 +4918,7 @@
-       'qed':            'BlockdevCreateOptionsQed',
-       'rbd':            'BlockdevCreateOptionsRbd',
-       'sheepdog':       'BlockdevCreateOptionsSheepdog',
-+      'vitastor':       'BlockdevCreateOptionsVitastor',
-       'ssh':            'BlockdevCreateOptionsSsh',
-       'vdi':            'BlockdevCreateOptionsVdi',
-       'vhdx':           'BlockdevCreateOptionsVhdx',
-Index: pve-qemu-kvm-5.1.0/configure
-===================================================================
---- pve-qemu-kvm-5.1.0.orig/configure
-+++ pve-qemu-kvm-5.1.0/configure
-@@ -446,6 +446,7 @@ trace_backends="log"
- trace_file="trace"
- spice=""
- rbd=""
-+vitastor=""
- smartcard=""
- libusb=""
- usb_redir=""
-@@ -1383,6 +1384,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="yes"
-   ;;
-+  --disable-vitastor) vitastor="no"
-+  ;;
-+  --enable-vitastor) vitastor="yes"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1901,6 +1906,7 @@ disabled with --disable-FEATURE, default
-   vhost-vdpa      vhost-vdpa kernel backend support
-   spice           spice
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -4234,6 +4240,27 @@ EOF
- fi
- 
- ##########################################
-+# vitastor probe
-+if test "$vitastor" != "no" ; then
-+  cat > $TMPC <<EOF
-+#include <vitastor_c.h>
-+int main(void) {
-+  vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+  return 0;
-+}
-+EOF
-+  vitastor_libs="-lvitastor_client"
-+  if compile_prog "" "$vitastor_libs" ; then
-+    vitastor=yes
-+  else
-+    if test "$vitastor" = "yes" ; then
-+      feature_not_found "vitastor block device" "Install vitastor-client-dev"
-+    fi
-+    vitastor=no
-+  fi
-+fi
-+
-+##########################################
- # libssh probe
- if test "$libssh" != "no" ; then
-   if $pkg_config --exists libssh; then
-@@ -6969,6 +6996,7 @@ echo "Trace output file $trace_file-<pid
- fi
- echo "spice support     $spice $(echo_version $spice $spice_protocol_version/$spice_server_version)"
- echo "rbd support       $rbd"
-+echo "vitastor support  $vitastor"
- echo "xfsctl support    $xfs"
- echo "smartcard support $smartcard"
- echo "libusb            $libusb"
-@@ -7644,6 +7672,10 @@ if test "$rbd" = "yes" ; then
-   echo "RBD_CFLAGS=$rbd_cflags" >> $config_host_mak
-   echo "RBD_LIBS=$rbd_libs" >> $config_host_mak
- fi
-+if test "$vitastor" = "yes" ; then
-+  echo "CONFIG_VITASTOR=y" >> $config_host_mak
-+  echo "VITASTOR_LIBS=$vitastor_libs" >> $config_host_mak
-+fi
- 
- echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
- if test "$coroutine_pool" = "yes" ; then
-Index: pve-qemu-kvm-5.1.0/block/Makefile.objs
-===================================================================
---- pve-qemu-kvm-5.1.0.orig/block/Makefile.objs
-+++ pve-qemu-kvm-5.1.0/block/Makefile.objs
-@@ -32,6 +32,7 @@ block-obj-$(if $(CONFIG_LIBISCSI),y,n) +
- block-obj-$(CONFIG_LIBNFS) += nfs.o
- block-obj-$(CONFIG_CURL) += curl.o
- block-obj-$(CONFIG_RBD) += rbd.o
-+block-obj-$(CONFIG_VITASTOR) += vitastor.o
- block-obj-$(CONFIG_GLUSTERFS) += gluster.o
- block-obj-$(CONFIG_LIBSSH) += ssh.o
- block-obj-y += backup-dump.o
-@@ -61,6 +62,8 @@ curl.o-cflags      := $(CURL_CFLAGS)
- curl.o-libs        := $(CURL_LIBS)
- rbd.o-cflags       := $(RBD_CFLAGS)
- rbd.o-libs         := $(RBD_LIBS)
-+vitastor.o-cflags  := $(VITASTOR_CFLAGS)
-+vitastor.o-libs    := $(VITASTOR_LIBS)
- gluster.o-cflags   := $(GLUSTERFS_CFLAGS)
- gluster.o-libs     := $(GLUSTERFS_LIBS)
- ssh.o-cflags       := $(LIBSSH_CFLAGS)

patches/pve-qemu-5.2-vitastor.patch

@@ -1,181 +0,0 @@
-Index: pve-qemu-kvm-5.2.0/qapi/block-core.json
-===================================================================
---- pve-qemu-kvm-5.2.0.orig/qapi/block-core.json
-+++ pve-qemu-kvm-5.2.0/qapi/block-core.json
-@@ -3076,7 +3076,7 @@
-             'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
-             'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
-             { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
--            'sheepdog', 'pbs',
-+            'sheepdog', 'pbs', 'vitastor',
-             'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
- 
- ##
-@@ -3924,6 +3924,28 @@
-             '*tag': 'str' } }
- 
- ##
-+# @BlockdevOptionsVitastor:
-+#
-+# Driver specific block device options for vitastor
-+#
-+# @image:       Image name
-+# @inode:       Inode number
-+# @pool:        Pool ID
-+# @size:        Desired image size in bytes
-+# @config-path: Path to Vitastor configuration
-+# @etcd-host:   etcd connection address(es)
-+# @etcd-prefix: etcd key/value prefix
-+##
-+{ 'struct': 'BlockdevOptionsVitastor',
-+  'data': { '*inode': 'uint64',
-+            '*pool': 'uint64',
-+            '*size': 'uint64',
-+            '*image': 'str',
-+            '*config-path': 'str',
-+            '*etcd-host': 'str',
-+            '*etcd-prefix': 'str' } }
-+
-+##
- # @ReplicationMode:
- #
- # An enumeration of replication modes.
-@@ -4272,6 +4294,7 @@
-       'replication': { 'type': 'BlockdevOptionsReplication',
-                        'if': 'defined(CONFIG_REPLICATION)' },
-       'sheepdog':   'BlockdevOptionsSheepdog',
-+      'vitastor':   'BlockdevOptionsVitastor',
-       'ssh':        'BlockdevOptionsSsh',
-       'throttle':   'BlockdevOptionsThrottle',
-       'vdi':        'BlockdevOptionsGenericFormat',
-@@ -4662,6 +4685,17 @@
-             '*cluster-size' :   'size' } }
- 
- ##
-+# @BlockdevCreateOptionsVitastor:
-+#
-+# Driver specific image creation options for Vitastor.
-+#
-+# @size: Size of the virtual disk in bytes
-+##
-+{ 'struct': 'BlockdevCreateOptionsVitastor',
-+  'data': { 'location':         'BlockdevOptionsVitastor',
-+            'size':             'size' } }
-+
-+##
- # @BlockdevVmdkSubformat:
- #
- # Subformat options for VMDK images
-@@ -4923,6 +4957,7 @@
-       'qed':            'BlockdevCreateOptionsQed',
-       'rbd':            'BlockdevCreateOptionsRbd',
-       'sheepdog':       'BlockdevCreateOptionsSheepdog',
-+      'vitastor':       'BlockdevCreateOptionsVitastor',
-       'ssh':            'BlockdevCreateOptionsSsh',
-       'vdi':            'BlockdevCreateOptionsVdi',
-       'vhdx':           'BlockdevCreateOptionsVhdx',
-Index: pve-qemu-kvm-5.2.0/block/meson.build
-===================================================================
---- pve-qemu-kvm-5.2.0.orig/block/meson.build
-+++ pve-qemu-kvm-5.2.0/block/meson.build
-@@ -89,6 +89,7 @@ foreach m : [
-   ['CONFIG_LIBNFS', 'nfs', libnfs, 'nfs.c'],
-   ['CONFIG_LIBSSH', 'ssh', libssh, 'ssh.c'],
-   ['CONFIG_RBD', 'rbd', rbd, 'rbd.c'],
-+  ['CONFIG_VITASTOR', 'vitastor', vitastor, 'vitastor.c'],
- ]
-   if config_host.has_key(m[0])
-     if enable_modules
-Index: pve-qemu-kvm-5.2.0/configure
-===================================================================
---- pve-qemu-kvm-5.2.0.orig/configure
-+++ pve-qemu-kvm-5.2.0/configure
-@@ -372,6 +372,7 @@ trace_backends="log"
- trace_file="trace"
- spice=""
- rbd=""
-+vitastor=""
- smartcard=""
- u2f="auto"
- libusb=""
-@@ -1264,6 +1265,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="yes"
-   ;;
-+  --disable-vitastor) vitastor="no"
-+  ;;
-+  --enable-vitastor) vitastor="yes"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1807,6 +1812,7 @@ disabled with --disable-FEATURE, default
-   vhost-vdpa      vhost-vdpa kernel backend support
-   spice           spice
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -3700,6 +3706,27 @@ EOF
- fi
- 
- ##########################################
-+# vitastor probe
-+if test "$vitastor" != "no" ; then
-+  cat > $TMPC <<EOF
-+#include <vitastor_c.h>
-+int main(void) {
-+  vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+  return 0;
-+}
-+EOF
-+  vitastor_libs="-lvitastor_client"
-+  if compile_prog "" "$vitastor_libs" ; then
-+    vitastor=yes
-+  else
-+    if test "$vitastor" = "yes" ; then
-+      feature_not_found "vitastor block device" "Install vitastor-client-dev"
-+    fi
-+    vitastor=no
-+  fi
-+fi
-+
-+##########################################
- # libssh probe
- if test "$libssh" != "no" ; then
-   if $pkg_config --exists libssh; then
-@@ -6437,6 +6464,10 @@ if test "$rbd" = "yes" ; then
-   echo "CONFIG_RBD=y" >> $config_host_mak
-   echo "RBD_LIBS=$rbd_libs" >> $config_host_mak
- fi
-+if test "$vitastor" = "yes" ; then
-+  echo "CONFIG_VITASTOR=y" >> $config_host_mak
-+  echo "VITASTOR_LIBS=$vitastor_libs" >> $config_host_mak
-+fi
- 
- echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
- if test "$coroutine_pool" = "yes" ; then
-Index: pve-qemu-kvm-5.2.0/meson.build
-===================================================================
---- pve-qemu-kvm-5.2.0.orig/meson.build
-+++ pve-qemu-kvm-5.2.0/meson.build
-@@ -596,6 +596,10 @@ rbd = not_found
- if 'CONFIG_RBD' in config_host
-   rbd = declare_dependency(link_args: config_host['RBD_LIBS'].split())
- endif
-+vitastor = not_found
-+if 'CONFIG_VITASTOR' in config_host
-+  vitastor = declare_dependency(link_args: config_host['VITASTOR_LIBS'].split())
-+endif
- glusterfs = not_found
- if 'CONFIG_GLUSTERFS' in config_host
-   glusterfs = declare_dependency(compile_args: config_host['GLUSTERFS_CFLAGS'].split(),
-@@ -2151,6 +2155,7 @@ endif
- # TODO: add back protocol and server version
- summary_info += {'spice support':     config_host.has_key('CONFIG_SPICE')}
- summary_info += {'rbd support':       config_host.has_key('CONFIG_RBD')}
-+summary_info += {'vitastor support':  config_host.has_key('CONFIG_VITASTOR')}
- summary_info += {'xfsctl support':    config_host.has_key('CONFIG_XFS')}
- summary_info += {'smartcard support': config_host.has_key('CONFIG_SMARTCARD')}
- summary_info += {'U2F support':       u2f.found()}

patches/pve-qemu-6.1-vitastor.patch

@@ -1,188 +0,0 @@
-Index: pve-qemu-kvm-6.1.0/qapi/block-core.json
-===================================================================
---- pve-qemu-kvm-6.1.0.orig/qapi/block-core.json
-+++ pve-qemu-kvm-6.1.0/qapi/block-core.json
-@@ -3084,7 +3084,7 @@
-             'preallocate', 'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
-             { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
-             'pbs',
--            'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
-+            'ssh', 'throttle', 'vdi', 'vhdx', 'vitastor', 'vmdk', 'vpc', 'vvfat' ] }
- 
- ##
- # @BlockdevOptionsFile:
-@@ -4020,6 +4020,28 @@
-             '*server': ['InetSocketAddressBase'] } }
- 
- ##
-+# @BlockdevOptionsVitastor:
-+#
-+# Driver specific block device options for vitastor
-+#
-+# @image:       Image name
-+# @inode:       Inode number
-+# @pool:        Pool ID
-+# @size:        Desired image size in bytes
-+# @config-path: Path to Vitastor configuration
-+# @etcd-host:   etcd connection address(es)
-+# @etcd-prefix: etcd key/value prefix
-+##
-+{ 'struct': 'BlockdevOptionsVitastor',
-+  'data': { '*inode': 'uint64',
-+            '*pool': 'uint64',
-+            '*size': 'uint64',
-+            '*image': 'str',
-+            '*config-path': 'str',
-+            '*etcd-host': 'str',
-+            '*etcd-prefix': 'str' } }
-+
-+##
- # @ReplicationMode:
- #
- # An enumeration of replication modes.
-@@ -4392,6 +4414,7 @@
-       'throttle':   'BlockdevOptionsThrottle',
-       'vdi':        'BlockdevOptionsGenericFormat',
-       'vhdx':       'BlockdevOptionsGenericFormat',
-+      'vitastor':   'BlockdevOptionsVitastor',
-       'vmdk':       'BlockdevOptionsGenericCOWFormat',
-       'vpc':        'BlockdevOptionsGenericFormat',
-       'vvfat':      'BlockdevOptionsVVFAT'
-@@ -4782,6 +4805,17 @@
-             '*encrypt' :        'RbdEncryptionCreateOptions' } }
- 
- ##
-+# @BlockdevCreateOptionsVitastor:
-+#
-+# Driver specific image creation options for Vitastor.
-+#
-+# @size: Size of the virtual disk in bytes
-+##
-+{ 'struct': 'BlockdevCreateOptionsVitastor',
-+  'data': { 'location':         'BlockdevOptionsVitastor',
-+            'size':             'size' } }
-+
-+##
- # @BlockdevVmdkSubformat:
- #
- # Subformat options for VMDK images
-@@ -4977,6 +5011,7 @@
-       'ssh':            'BlockdevCreateOptionsSsh',
-       'vdi':            'BlockdevCreateOptionsVdi',
-       'vhdx':           'BlockdevCreateOptionsVhdx',
-+      'vitastor':       'BlockdevCreateOptionsVitastor',
-       'vmdk':           'BlockdevCreateOptionsVmdk',
-       'vpc':            'BlockdevCreateOptionsVpc'
-   } }
-Index: pve-qemu-kvm-6.1.0/block/meson.build
-===================================================================
---- pve-qemu-kvm-6.1.0.orig/block/meson.build
-+++ pve-qemu-kvm-6.1.0/block/meson.build
-@@ -91,6 +91,7 @@ foreach m : [
-   [libnfs, 'nfs', files('nfs.c')],
-   [libssh, 'ssh', files('ssh.c')],
-   [rbd, 'rbd', files('rbd.c')],
-+  [vitastor, 'vitastor', files('vitastor.c')],
- ]
-   if m[0].found()
-     module_ss = ss.source_set()
-Index: pve-qemu-kvm-6.1.0/configure
-===================================================================
---- pve-qemu-kvm-6.1.0.orig/configure
-+++ pve-qemu-kvm-6.1.0/configure
-@@ -375,6 +375,7 @@ trace_file="trace"
- spice="$default_feature"
- spice_protocol="auto"
- rbd="auto"
-+vitastor="auto"
- smartcard="auto"
- u2f="auto"
- libusb="auto"
-@@ -1293,6 +1294,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="enabled"
-   ;;
-+  --disable-vitastor) vitastor="disabled"
-+  ;;
-+  --enable-vitastor) vitastor="enabled"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1921,6 +1926,7 @@ disabled with --disable-FEATURE, default
-   spice           spice
-   spice-protocol  spice-protocol
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -5211,7 +5217,7 @@ if test "$skip_meson" = no; then
-         -Dcapstone=$capstone -Dslirp=$slirp -Dfdt=$fdt -Dbrlapi=$brlapi \
-         -Dcurl=$curl -Dglusterfs=$glusterfs -Dbzip2=$bzip2 -Dlibiscsi=$libiscsi \
-         -Dlibnfs=$libnfs -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\
--        -Drbd=$rbd -Dlzo=$lzo -Dsnappy=$snappy -Dlzfse=$lzfse -Dlibxml2=$libxml2 \
-+        -Drbd=$rbd -Dvitastor=$vitastor -Dlzo=$lzo -Dsnappy=$snappy -Dlzfse=$lzfse -Dlibxml2=$libxml2 \
-         -Dlibdaxctl=$libdaxctl -Dlibpmem=$libpmem -Dlinux_io_uring=$linux_io_uring \
-         -Dgnutls=$gnutls -Dnettle=$nettle -Dgcrypt=$gcrypt -Dauth_pam=$auth_pam \
-         -Dzstd=$zstd -Dseccomp=$seccomp -Dvirtfs=$virtfs -Dcap_ng=$cap_ng \
-Index: pve-qemu-kvm-6.1.0/meson.build
-===================================================================
---- pve-qemu-kvm-6.1.0.orig/meson.build
-+++ pve-qemu-kvm-6.1.0/meson.build
-@@ -729,6 +729,26 @@ if not get_option('rbd').auto() or have_
-   endif
- endif
- 
-+vitastor = not_found
-+if not get_option('vitastor').auto() or have_block
-+  libvitastor_client = cc.find_library('vitastor_client', has_headers: ['vitastor_c.h'],
-+    required: get_option('vitastor'), kwargs: static_kwargs)
-+  if libvitastor_client.found()
-+    if cc.links('''
-+      #include <vitastor_c.h>
-+      int main(void) {
-+        vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+        return 0;
-+      }''', dependencies: libvitastor_client)
-+      vitastor = declare_dependency(dependencies: libvitastor_client)
-+    elif get_option('vitastor').enabled()
-+      error('could not link libvitastor_client')
-+    else
-+      warning('could not link libvitastor_client, disabling')
-+    endif
-+  endif
-+endif
-+
- glusterfs = not_found
- glusterfs_ftruncate_has_stat = false
- glusterfs_iocb_has_stat = false
-@@ -1268,6 +1288,7 @@ config_host_data.set('CONFIG_LIBNFS', li
- config_host_data.set('CONFIG_LINUX_IO_URING', linux_io_uring.found())
- config_host_data.set('CONFIG_LIBPMEM', libpmem.found())
- config_host_data.set('CONFIG_RBD', rbd.found())
-+config_host_data.set('CONFIG_VITASTOR', vitastor.found())
- config_host_data.set('CONFIG_SDL', sdl.found())
- config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
- config_host_data.set('CONFIG_SECCOMP', seccomp.found())
-@@ -3087,6 +3108,7 @@ summary_info += {'bpf support': libbpf.f
- # TODO: add back protocol and server version
- summary_info += {'spice support':     config_host.has_key('CONFIG_SPICE')}
- summary_info += {'rbd support':       rbd.found()}
-+summary_info += {'vitastor support':  vitastor.found()}
- summary_info += {'xfsctl support':    config_host.has_key('CONFIG_XFS')}
- summary_info += {'smartcard support': cacard.found()}
- summary_info += {'U2F support':       u2f.found()}
-Index: pve-qemu-kvm-6.1.0/meson_options.txt
-===================================================================
---- pve-qemu-kvm-6.1.0.orig/meson_options.txt
-+++ pve-qemu-kvm-6.1.0/meson_options.txt
-@@ -102,6 +102,8 @@ option('lzo', type : 'feature', value :
-        description: 'lzo compression support')
- option('rbd', type : 'feature', value : 'auto',
-        description: 'Ceph block device driver')
-+option('vitastor', type : 'feature', value : 'auto',
-+       description: 'Vitastor block device driver')
- option('gtk', type : 'feature', value : 'auto',
-        description: 'GTK+ user interface')
- option('sdl', type : 'feature', value : 'auto',

patches/qemu-3.1-vitastor.patch

@@ -1,107 +1,7 @@
-diff --git a/block/Makefile.objs b/block/Makefile.objs
-index 46d585cfd0..62222f25fe 100644
---- a/block/Makefile.objs
-+++ b/block/Makefile.objs
-@@ -29,6 +29,7 @@ block-obj-$(if $(CONFIG_LIBISCSI),y,n) += iscsi-opts.o
- block-obj-$(CONFIG_LIBNFS) += nfs.o
- block-obj-$(CONFIG_CURL) += curl.o
- block-obj-$(CONFIG_RBD) += rbd.o
-+block-obj-$(CONFIG_VITASTOR) += vitastor.o
- block-obj-$(CONFIG_GLUSTERFS) += gluster.o
- block-obj-$(CONFIG_VXHS) += vxhs.o
- block-obj-$(CONFIG_LIBSSH2) += ssh.o
-@@ -49,6 +50,8 @@ curl.o-cflags      := $(CURL_CFLAGS)
- curl.o-libs        := $(CURL_LIBS)
- rbd.o-cflags       := $(RBD_CFLAGS)
- rbd.o-libs         := $(RBD_LIBS)
-+vitastor.o-cflags  := $(VITASTOR_CFLAGS)
-+vitastor.o-libs    := $(VITASTOR_LIBS)
- gluster.o-cflags   := $(GLUSTERFS_CFLAGS)
- gluster.o-libs     := $(GLUSTERFS_LIBS)
- vxhs.o-libs        := $(VXHS_LIBS)
-diff --git a/configure b/configure
-index 1c9f6090e8..25ef89c33a 100755
---- a/configure
-+++ b/configure
-@@ -422,6 +422,7 @@ trace_backends="log"
- trace_file="trace"
- spice=""
- rbd=""
-+vitastor=""
- smartcard=""
- libusb=""
- usb_redir=""
-@@ -1282,6 +1283,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="yes"
-   ;;
-+  --disable-vitastor) vitastor="no"
-+  ;;
-+  --enable-vitastor) vitastor="yes"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1737,6 +1742,7 @@ disabled with --disable-FEATURE, default is enabled if available:
-   vhost-crypto    vhost-crypto acceleration support
-   spice           spice
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -3722,6 +3728,27 @@ EOF
-   fi
- fi
- 
-+##########################################
-+# vitastor probe
-+if test "$vitastor" != "no" ; then
-+  cat > $TMPC <<EOF
-+#include <vitastor_c.h>
-+int main(void) {
-+  vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+  return 0;
-+}
-+EOF
-+  vitastor_libs="-lvitastor_client"
-+  if compile_prog "" "$vitastor_libs" ; then
-+    vitastor=yes
-+  else
-+    if test "$vitastor" = "yes" ; then
-+      feature_not_found "vitastor block device" "Install vitastor-client-dev"
-+    fi
-+    vitastor=no
-+  fi
-+fi
-+
- ##########################################
- # libssh2 probe
- min_libssh2_version=1.2.8
-@@ -6109,6 +6136,7 @@ echo "Trace output file $trace_file-<pid>"
- fi
- echo "spice support     $spice $(echo_version $spice $spice_protocol_version/$spice_server_version)"
- echo "rbd support       $rbd"
-+echo "vitastor support  $vitastor"
- echo "xfsctl support    $xfs"
- echo "smartcard support $smartcard"
- echo "libusb            $libusb"
-@@ -6694,6 +6722,11 @@ if test "$rbd" = "yes" ; then
-   echo "RBD_CFLAGS=$rbd_cflags" >> $config_host_mak
-   echo "RBD_LIBS=$rbd_libs" >> $config_host_mak
- fi
-+if test "$vitastor" = "yes" ; then
-+  echo "CONFIG_VITASTOR=m" >> $config_host_mak
-+  echo "VITASTOR_CFLAGS=$vitastor_cflags" >> $config_host_mak
-+  echo "VITASTOR_LIBS=$vitastor_libs" >> $config_host_mak
-+fi
- 
- echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
- if test "$coroutine_pool" = "yes" ; then
-diff --git a/qapi/block-core.json b/qapi/block-core.json
-index d4fe710836..dbad3327b3 100644
---- a/qapi/block-core.json
-+++ b/qapi/block-core.json
+Index: qemu-3.1+dfsg/qapi/block-core.json
+===================================================================
+--- qemu-3.1+dfsg.orig/qapi/block-core.json
++++ qemu-3.1+dfsg/qapi/block-core.json
 @@ -2617,7 +2617,7 @@
  ##
  { 'enum': 'BlockdevDriver',
@@ -111,11 +11,10 @@ index d4fe710836..dbad3327b3 100644
              'host_cdrom', 'host_device', 'http', 'https', 'iscsi', 'luks',
              'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels', 'qcow',
              'qcow2', 'qed', 'quorum', 'raw', 'rbd', 'replication', 'sheepdog',
-@@ -3366,6 +3366,28 @@
-             '*snap-id': 'uint32',
+@@ -3367,6 +3367,28 @@
              '*tag': 'str' } }
  
-+##
+ ##
 +# @BlockdevOptionsVitastor:
 +#
 +# Driver specific block device options for vitastor
@@ -137,10 +36,11 @@ index d4fe710836..dbad3327b3 100644
 +            '*etcd-host': 'str',
 +            '*etcd-prefix': 'str' } }
 +
- ##
++##
  # @ReplicationMode:
  #
-@@ -3713,6 +3735,7 @@
+ # An enumeration of replication modes.
+@@ -3713,6 +3731,7 @@
        'rbd':        'BlockdevOptionsRbd',
        'replication':'BlockdevOptionsReplication',
        'sheepdog':   'BlockdevOptionsSheepdog',
@@ -148,11 +48,10 @@ index d4fe710836..dbad3327b3 100644
        'ssh':        'BlockdevOptionsSsh',
        'throttle':   'BlockdevOptionsThrottle',
        'vdi':        'BlockdevOptionsGenericFormat',
-@@ -4157,6 +4180,17 @@
-             '*subformat':           'BlockdevVhdxSubformat',
+@@ -4158,6 +4177,17 @@
              '*block-state-zero':    'bool' } }
  
-+##
+ ##
 +# @BlockdevCreateOptionsVitastor:
 +#
 +# Driver specific image creation options for Vitastor.
@@ -163,10 +62,11 @@ index d4fe710836..dbad3327b3 100644
 +  'data': { 'location':         'BlockdevOptionsVitastor',
 +            'size':             'size' } }
 +
- ##
++##
  # @BlockdevVpcSubformat:
  #
-@@ -4212,6 +4246,7 @@
+ # @dynamic: Growing image file
+@@ -4212,6 +4242,7 @@
        'qed':            'BlockdevCreateOptionsQed',
        'rbd':            'BlockdevCreateOptionsRbd',
        'sheepdog':       'BlockdevCreateOptionsSheepdog',
@@ -174,3 +74,15 @@ index d4fe710836..dbad3327b3 100644
        'ssh':            'BlockdevCreateOptionsSsh',
        'vdi':            'BlockdevCreateOptionsVdi',
        'vhdx':           'BlockdevCreateOptionsVhdx',
+Index: qemu-3.1+dfsg/scripts/modules/module_block.py
+===================================================================
+--- qemu-3.1+dfsg.orig/scripts/modules/module_block.py
++++ qemu-3.1+dfsg/scripts/modules/module_block.py
+@@ -88,6 +88,7 @@ def print_bottom(fheader):
+ output_file = sys.argv[1]
+ with open(output_file, 'w') as fheader:
+     print_top(fheader)
++    add_module(fheader, "vitastor", "vitastor", "vitastor")
+ 
+     for filename in sys.argv[2:]:
+         if os.path.isfile(filename):

patches/qemu-4.2-vitastor.patch

@@ -1,105 +1,8 @@
-diff -NaurpbB qemu-4.2.0/block/Makefile.objs qemu-4.2.0-vitastor/block/Makefile.objs
---- qemu-4.2.0/block/Makefile.objs	2019-12-12 18:20:47.000000000 +0000
-+++ qemu-4.2.0-vitastor/block/Makefile.objs	2021-12-01 21:28:47.342341760 +0000
-@@ -29,6 +29,7 @@ block-obj-$(if $(CONFIG_LIBISCSI),y,n) +
- block-obj-$(CONFIG_LIBNFS) += nfs.o
- block-obj-$(CONFIG_CURL) += curl.o
- block-obj-$(CONFIG_RBD) += rbd.o
-+block-obj-$(CONFIG_VITASTOR) += vitastor.o
- block-obj-$(CONFIG_GLUSTERFS) += gluster.o
- block-obj-$(CONFIG_VXHS) += vxhs.o
- block-obj-$(CONFIG_LIBSSH) += ssh.o
-@@ -53,6 +54,8 @@ curl.o-cflags      := $(CURL_CFLAGS)
- curl.o-libs        := $(CURL_LIBS)
- rbd.o-cflags       := $(RBD_CFLAGS)
- rbd.o-libs         := $(RBD_LIBS)
-+vitastor.o-cflags  := $(VITASTOR_CFLAGS)
-+vitastor.o-libs    := $(VITASTOR_LIBS)
- gluster.o-cflags   := $(GLUSTERFS_CFLAGS)
- gluster.o-libs     := $(GLUSTERFS_LIBS)
- vxhs.o-libs        := $(VXHS_LIBS)
-diff -NaurpbB qemu-4.2.0/configure qemu-4.2.0-vitastor/configure
---- qemu-4.2.0/configure	2019-12-12 18:20:47.000000000 +0000
-+++ qemu-4.2.0-vitastor/configure	2021-12-01 21:30:24.605237562 +0000
-@@ -435,6 +435,7 @@ trace_backends="log"
- trace_file="trace"
- spice=""
- rbd=""
-+vitastor=""
- smartcard=""
- libusb=""
- usb_redir=""
-@@ -1312,6 +1313,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="yes"
-   ;;
-+  --disable-vitastor) vitastor="no"
-+  ;;
-+  --enable-vitastor) vitastor="yes"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1782,6 +1787,7 @@ disabled with --disable-FEATURE, default
-   vhost-user      vhost-user backend support
-   spice           spice
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -3980,6 +3986,27 @@ EOF
- fi
- 
- ##########################################
-+# vitastor probe
-+if test "$vitastor" != "no" ; then
-+  cat > $TMPC <<EOF
-+#include <vitastor_c.h>
-+int main(void) {
-+  vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+  return 0;
-+}
-+EOF
-+  vitastor_libs="-lvitastor_client"
-+  if compile_prog "" "$vitastor_libs" ; then
-+    vitastor=yes
-+  else
-+    if test "$vitastor" = "yes" ; then
-+      feature_not_found "vitastor block device" "Install vitastor-client-dev"
-+    fi
-+    vitastor=no
-+  fi
-+fi
-+
-+##########################################
- # libssh probe
- if test "$libssh" != "no" ; then
-   if $pkg_config --exists libssh; then
-@@ -6549,6 +6576,7 @@ echo "Trace output file $trace_file-<pid
- fi
- echo "spice support     $spice $(echo_version $spice $spice_protocol_version/$spice_server_version)"
- echo "rbd support       $rbd"
-+echo "vitastor support  $vitastor"
- echo "xfsctl support    $xfs"
- echo "smartcard support $smartcard"
- echo "libusb            $libusb"
-@@ -7182,6 +7210,11 @@ if test "$rbd" = "yes" ; then
-   echo "RBD_CFLAGS=$rbd_cflags" >> $config_host_mak
-   echo "RBD_LIBS=$rbd_libs" >> $config_host_mak
- fi
-+if test "$vitastor" = "yes" ; then
-+  echo "CONFIG_VITASTOR=m" >> $config_host_mak
-+  echo "VITASTOR_CFLAGS=$vitastor_cflags" >> $config_host_mak
-+  echo "VITASTOR_LIBS=$vitastor_libs" >> $config_host_mak
-+fi
- 
- echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
- if test "$coroutine_pool" = "yes" ; then
-diff -NaurpbB qemu-4.2.0/qapi/block-core.json qemu-4.2.0-vitastor/qapi/block-core.json
---- qemu-4.2.0/qapi/block-core.json	2019-12-12 18:20:48.000000000 +0000
-+++ qemu-4.2.0-vitastor/qapi/block-core.json	2021-12-01 21:27:49.213574396 +0000
-@@ -2894,7 +2894,7 @@
+Index: qemu/qapi/block-core.json
+===================================================================
+--- qemu.orig/qapi/block-core.json	2020-11-07 22:57:38.932613674 +0000
++++ qemu.orig/qapi/block-core.json	2020-11-07 22:59:49.890722862 +0000
+@@ -2907,7 +2907,7 @@
              'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels', 'qcow',
              'qcow2', 'qed', 'quorum', 'raw', 'rbd',
              { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
@@ -108,7 +11,7 @@ diff -NaurpbB qemu-4.2.0/qapi/block-core.json qemu-4.2.0-vitastor/qapi/block-cor
              'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat', 'vxhs' ] }
  
  ##
-@@ -3712,6 +3712,28 @@
+@@ -3725,6 +3725,28 @@
              '*tag': 'str' } }
  
  ##
@@ -137,7 +40,7 @@ diff -NaurpbB qemu-4.2.0/qapi/block-core.json qemu-4.2.0-vitastor/qapi/block-cor
  # @ReplicationMode:
  #
  # An enumeration of replication modes.
-@@ -4071,6 +4093,7 @@
+@@ -4084,6 +4102,7 @@
        'replication': { 'type': 'BlockdevOptionsReplication',
                         'if': 'defined(CONFIG_REPLICATION)' },
        'sheepdog':   'BlockdevOptionsSheepdog',
@@ -145,7 +48,7 @@ diff -NaurpbB qemu-4.2.0/qapi/block-core.json qemu-4.2.0-vitastor/qapi/block-cor
        'ssh':        'BlockdevOptionsSsh',
        'throttle':   'BlockdevOptionsThrottle',
        'vdi':        'BlockdevOptionsGenericFormat',
-@@ -4441,6 +4464,17 @@
+@@ -4461,6 +4480,17 @@
              '*cluster-size' :   'size' } }
  
  ##
@@ -163,7 +66,7 @@ diff -NaurpbB qemu-4.2.0/qapi/block-core.json qemu-4.2.0-vitastor/qapi/block-cor
  # @BlockdevVmdkSubformat:
  #
  # Subformat options for VMDK images
-@@ -4702,6 +4736,7 @@
+@@ -4722,6 +4752,7 @@
        'qed':            'BlockdevCreateOptionsQed',
        'rbd':            'BlockdevCreateOptionsRbd',
        'sheepdog':       'BlockdevCreateOptionsSheepdog',
@@ -171,3 +74,15 @@ diff -NaurpbB qemu-4.2.0/qapi/block-core.json qemu-4.2.0-vitastor/qapi/block-cor
        'ssh':            'BlockdevCreateOptionsSsh',
        'vdi':            'BlockdevCreateOptionsVdi',
        'vhdx':           'BlockdevCreateOptionsVhdx',
+Index: qemu/scripts/modules/module_block.py
+===================================================================
+--- qemu.orig/scripts/modules/module_block.py	2020-11-07 22:57:38.936613739 +0000
++++ qemu/scripts/modules/module_block.py	2020-11-07 22:59:49.890722862 +0000
+@@ -86,6 +86,7 @@ def print_bottom(fheader):
+ output_file = sys.argv[1]
+ with open(output_file, 'w') as fheader:
+     print_top(fheader)
++    add_module(fheader, "vitastor", "vitastor", "vitastor")
+ 
+     for filename in sys.argv[2:]:
+         if os.path.isfile(filename):

patches/qemu-5.0-vitastor.patch

@@ -1,107 +1,7 @@
-diff --git a/block/Makefile.objs b/block/Makefile.objs
-index 3635b6b4c1..6cdf6df6ff 100644
---- a/block/Makefile.objs
-+++ b/block/Makefile.objs
-@@ -30,6 +30,7 @@ block-obj-$(if $(CONFIG_LIBISCSI),y,n) += iscsi-opts.o
- block-obj-$(CONFIG_LIBNFS) += nfs.o
- block-obj-$(CONFIG_CURL) += curl.o
- block-obj-$(CONFIG_RBD) += rbd.o
-+block-obj-$(CONFIG_VITASTOR) += vitastor.o
- block-obj-$(CONFIG_GLUSTERFS) += gluster.o
- block-obj-$(CONFIG_VXHS) += vxhs.o
- block-obj-$(CONFIG_LIBSSH) += ssh.o
-@@ -58,6 +59,8 @@ curl.o-cflags      := $(CURL_CFLAGS)
- curl.o-libs        := $(CURL_LIBS)
- rbd.o-cflags       := $(RBD_CFLAGS)
- rbd.o-libs         := $(RBD_LIBS)
-+vitastor.o-cflags  := $(VITASTOR_CFLAGS)
-+vitastor.o-libs    := $(VITASTOR_LIBS)
- gluster.o-cflags   := $(GLUSTERFS_CFLAGS)
- gluster.o-libs     := $(GLUSTERFS_LIBS)
- vxhs.o-libs        := $(VXHS_LIBS)
-diff --git a/configure b/configure
-index 23b5e93752..7400cb9546 100755
---- a/configure
-+++ b/configure
-@@ -438,6 +438,7 @@ trace_backends="log"
- trace_file="trace"
- spice=""
- rbd=""
-+vitastor=""
- smartcard=""
- libusb=""
- usb_redir=""
-@@ -1355,6 +1356,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="yes"
-   ;;
-+  --disable-vitastor) vitastor="no"
-+  ;;
-+  --enable-vitastor) vitastor="yes"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1848,6 +1853,7 @@ disabled with --disable-FEATURE, default is enabled if available:
-   vhost-user      vhost-user backend support
-   spice           spice
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -4088,6 +4094,27 @@ EOF
-   fi
- fi
- 
-+##########################################
-+# vitastor probe
-+if test "$vitastor" != "no" ; then
-+  cat > $TMPC <<EOF
-+#include <vitastor_c.h>
-+int main(void) {
-+  vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+  return 0;
-+}
-+EOF
-+  vitastor_libs="-lvitastor_client"
-+  if compile_prog "" "$vitastor_libs" ; then
-+    vitastor=yes
-+  else
-+    if test "$vitastor" = "yes" ; then
-+      feature_not_found "vitastor block device" "Install vitastor-client-dev"
-+    fi
-+    vitastor=no
-+  fi
-+fi
-+
- ##########################################
- # libssh probe
- if test "$libssh" != "no" ; then
-@@ -6679,6 +6706,7 @@ echo "Trace output file $trace_file-<pid>"
- fi
- echo "spice support     $spice $(echo_version $spice $spice_protocol_version/$spice_server_version)"
- echo "rbd support       $rbd"
-+echo "vitastor support  $vitastor"
- echo "xfsctl support    $xfs"
- echo "smartcard support $smartcard"
- echo "libusb            $libusb"
-@@ -7329,6 +7357,11 @@ if test "$rbd" = "yes" ; then
-   echo "RBD_CFLAGS=$rbd_cflags" >> $config_host_mak
-   echo "RBD_LIBS=$rbd_libs" >> $config_host_mak
- fi
-+if test "$vitastor" = "yes" ; then
-+  echo "CONFIG_VITASTOR=m" >> $config_host_mak
-+  echo "VITASTOR_CFLAGS=$vitastor_cflags" >> $config_host_mak
-+  echo "VITASTOR_LIBS=$vitastor_libs" >> $config_host_mak
-+fi
- 
- echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
- if test "$coroutine_pool" = "yes" ; then
-diff --git a/qapi/block-core.json b/qapi/block-core.json
-index 943df1926a..c4f23230a3 100644
---- a/qapi/block-core.json
-+++ b/qapi/block-core.json
+Index: qemu/qapi/block-core.json
+===================================================================
+--- qemu.orig/qapi/block-core.json
++++ qemu/qapi/block-core.json
 @@ -2798,7 +2798,7 @@
              'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
              'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
@@ -111,11 +11,10 @@ index 943df1926a..c4f23230a3 100644
              'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat', 'vxhs' ] }
  
  ##
-@@ -3634,6 +3634,28 @@
-             '*snap-id': 'uint32',
+@@ -3635,6 +3635,28 @@
              '*tag': 'str' } }
  
-+##
+ ##
 +# @BlockdevOptionsVitastor:
 +#
 +# Driver specific block device options for vitastor
@@ -137,10 +36,11 @@ index 943df1926a..c4f23230a3 100644
 +            '*etcd-host': 'str',
 +            '*etcd-prefix': 'str' } }
 +
- ##
++##
  # @ReplicationMode:
  #
-@@ -3995,6 +4017,7 @@
+ # An enumeration of replication modes.
+@@ -3995,6 +4013,7 @@
        'replication': { 'type': 'BlockdevOptionsReplication',
                         'if': 'defined(CONFIG_REPLICATION)' },
        'sheepdog':   'BlockdevOptionsSheepdog',
@@ -148,11 +48,10 @@ index 943df1926a..c4f23230a3 100644
        'ssh':        'BlockdevOptionsSsh',
        'throttle':   'BlockdevOptionsThrottle',
        'vdi':        'BlockdevOptionsGenericFormat',
-@@ -4364,6 +4387,17 @@
-             'size':             'size',
+@@ -4365,6 +4384,17 @@
              '*cluster-size' :   'size' } }
  
-+##
+ ##
 +# @BlockdevCreateOptionsVitastor:
 +#
 +# Driver specific image creation options for Vitastor.
@@ -163,10 +62,11 @@ index 943df1926a..c4f23230a3 100644
 +  'data': { 'location':         'BlockdevOptionsVitastor',
 +            'size':             'size' } }
 +
- ##
++##
  # @BlockdevVmdkSubformat:
  #
-@@ -4626,6 +4660,7 @@
+ # Subformat options for VMDK images
+@@ -4626,6 +4656,7 @@
        'qed':            'BlockdevCreateOptionsQed',
        'rbd':            'BlockdevCreateOptionsRbd',
        'sheepdog':       'BlockdevCreateOptionsSheepdog',
@@ -174,3 +74,15 @@ index 943df1926a..c4f23230a3 100644
        'ssh':            'BlockdevCreateOptionsSsh',
        'vdi':            'BlockdevCreateOptionsVdi',
        'vhdx':           'BlockdevCreateOptionsVhdx',
+Index: qemu/scripts/modules/module_block.py
+===================================================================
+--- qemu.orig/scripts/modules/module_block.py
++++ qemu/scripts/modules/module_block.py
+@@ -85,6 +85,7 @@ def print_bottom(fheader):
+ output_file = sys.argv[1]
+ with open(output_file, 'w') as fheader:
+     print_top(fheader)
++    add_module(fheader, "vitastor", "vitastor", "vitastor")
+ 
+     for filename in sys.argv[2:]:
+         if os.path.isfile(filename):

patches/qemu-5.1-vitastor.patch

@@ -1,8 +1,8 @@
-Index: qemu-5.2+dfsg/qapi/block-core.json
+Index: qemu-5.1+dfsg/qapi/block-core.json
 ===================================================================
---- qemu-5.2+dfsg.orig/qapi/block-core.json
-+++ qemu-5.2+dfsg/qapi/block-core.json
-@@ -2831,7 +2831,7 @@
+--- qemu-5.1+dfsg.orig/qapi/block-core.json
++++ qemu-5.1+dfsg/qapi/block-core.json
+@@ -2807,7 +2807,7 @@
              'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
              'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
              { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
@@ -11,7 +11,7 @@ Index: qemu-5.2+dfsg/qapi/block-core.json
              'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
  
  ##
-@@ -3668,6 +3668,28 @@
+@@ -3644,6 +3644,28 @@
              '*tag': 'str' } }
  
  ##
@@ -40,7 +40,7 @@ Index: qemu-5.2+dfsg/qapi/block-core.json
  # @ReplicationMode:
  #
  # An enumeration of replication modes.
-@@ -4015,6 +4037,7 @@
+@@ -3988,6 +4006,7 @@
        'replication': { 'type': 'BlockdevOptionsReplication',
                         'if': 'defined(CONFIG_REPLICATION)' },
        'sheepdog':   'BlockdevOptionsSheepdog',
@@ -48,7 +48,7 @@ Index: qemu-5.2+dfsg/qapi/block-core.json
        'ssh':        'BlockdevOptionsSsh',
        'throttle':   'BlockdevOptionsThrottle',
        'vdi':        'BlockdevOptionsGenericFormat',
-@@ -4404,6 +4427,17 @@
+@@ -4376,6 +4395,17 @@
              '*cluster-size' :   'size' } }
  
  ##
@@ -66,7 +66,7 @@ Index: qemu-5.2+dfsg/qapi/block-core.json
  # @BlockdevVmdkSubformat:
  #
  # Subformat options for VMDK images
-@@ -4665,6 +4699,7 @@
+@@ -4637,6 +4667,7 @@
        'qed':            'BlockdevCreateOptionsQed',
        'rbd':            'BlockdevCreateOptionsRbd',
        'sheepdog':       'BlockdevCreateOptionsSheepdog',
@@ -74,108 +74,15 @@ Index: qemu-5.2+dfsg/qapi/block-core.json
        'ssh':            'BlockdevCreateOptionsSsh',
        'vdi':            'BlockdevCreateOptionsVdi',
        'vhdx':           'BlockdevCreateOptionsVhdx',
-Index: qemu-5.2+dfsg/block/meson.build
+Index: qemu-5.1+dfsg/scripts/modules/module_block.py
 ===================================================================
---- qemu-5.2+dfsg.orig/block/meson.build
-+++ qemu-5.2+dfsg/block/meson.build
-@@ -76,6 +76,7 @@ foreach m : [
-   ['CONFIG_LIBNFS', 'nfs', libnfs, 'nfs.c'],
-   ['CONFIG_LIBSSH', 'ssh', libssh, 'ssh.c'],
-   ['CONFIG_RBD', 'rbd', rbd, 'rbd.c'],
-+  ['CONFIG_VITASTOR', 'vitastor', vitastor, 'vitastor.c'],
- ]
-   if config_host.has_key(m[0])
-     if enable_modules
-Index: qemu-5.2+dfsg/configure
-===================================================================
---- qemu-5.2+dfsg.orig/configure
-+++ qemu-5.2+dfsg/configure
-@@ -372,6 +372,7 @@ trace_backends="log"
- trace_file="trace"
- spice=""
- rbd=""
-+vitastor=""
- smartcard=""
- u2f="auto"
- libusb=""
-@@ -1263,6 +1264,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="yes"
-   ;;
-+  --disable-vitastor) vitastor="no"
-+  ;;
-+  --enable-vitastor) vitastor="yes"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1827,6 +1832,7 @@ disabled with --disable-FEATURE, default
-   vhost-vdpa      vhost-vdpa kernel backend support
-   spice           spice
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -3719,6 +3725,27 @@ EOF
- fi
+--- qemu-5.1+dfsg.orig/scripts/modules/module_block.py
++++ qemu-5.1+dfsg/scripts/modules/module_block.py
+@@ -86,6 +86,7 @@ if __name__ == '__main__':
+     output_file = sys.argv[1]
+     with open(output_file, 'w') as fheader:
+         print_top(fheader)
++        add_module(fheader, "vitastor", "vitastor", "vitastor")
  
- ##########################################
-+# vitastor probe
-+if test "$vitastor" != "no" ; then
-+  cat > $TMPC <<EOF
-+#include <vitastor_c.h>
-+int main(void) {
-+  vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+  return 0;
-+}
-+EOF
-+  vitastor_libs="-lvitastor_client"
-+  if compile_prog "" "$vitastor_libs" ; then
-+    vitastor=yes
-+  else
-+    if test "$vitastor" = "yes" ; then
-+      feature_not_found "vitastor block device" "Install vitastor-client-dev"
-+    fi
-+    vitastor=no
-+  fi
-+fi
-+
-+##########################################
- # libssh probe
- if test "$libssh" != "no" ; then
-   if $pkg_config --exists libssh; then
-@@ -6456,6 +6483,10 @@ if test "$rbd" = "yes" ; then
-   echo "CONFIG_RBD=y" >> $config_host_mak
-   echo "RBD_LIBS=$rbd_libs" >> $config_host_mak
- fi
-+if test "$vitastor" = "yes" ; then
-+  echo "CONFIG_VITASTOR=y" >> $config_host_mak
-+  echo "VITASTOR_LIBS=$vitastor_libs" >> $config_host_mak
-+fi
- 
- echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
- if test "$coroutine_pool" = "yes" ; then
-Index: qemu-5.2+dfsg/meson.build
-===================================================================
---- qemu-5.2+dfsg.orig/meson.build
-+++ qemu-5.2+dfsg/meson.build
-@@ -596,6 +596,10 @@ rbd = not_found
- if 'CONFIG_RBD' in config_host
-   rbd = declare_dependency(link_args: config_host['RBD_LIBS'].split())
- endif
-+vitastor = not_found
-+if 'CONFIG_VITASTOR' in config_host
-+  vitastor = declare_dependency(link_args: config_host['VITASTOR_LIBS'].split())
-+endif
- glusterfs = not_found
- if 'CONFIG_GLUSTERFS' in config_host
-   glusterfs = declare_dependency(compile_args: config_host['GLUSTERFS_CFLAGS'].split(),
-@@ -2145,6 +2149,7 @@ endif
- # TODO: add back protocol and server version
- summary_info += {'spice support':     config_host.has_key('CONFIG_SPICE')}
- summary_info += {'rbd support':       config_host.has_key('CONFIG_RBD')}
-+summary_info += {'vitastor support':  config_host.has_key('CONFIG_VITASTOR')}
- summary_info += {'xfsctl support':    config_host.has_key('CONFIG_XFS')}
- summary_info += {'smartcard support': config_host.has_key('CONFIG_SMARTCARD')}
- summary_info += {'U2F support':       u2f.found()}
+         for filename in sys.argv[2:]:
+             if os.path.isfile(filename):

patches/qemu-6.0-vitastor.patch

@@ -1,188 +0,0 @@
-diff --git a/block/meson.build b/block/meson.build
-index d21990ec95..385ac37732 100644
---- a/block/meson.build
-+++ b/block/meson.build
-@@ -78,6 +78,7 @@ foreach m : [
-   [libnfs, 'nfs', libnfs, 'nfs.c'],
-   [libssh, 'ssh', libssh, 'ssh.c'],
-   [rbd, 'rbd', rbd, 'rbd.c'],
-+  [vitastor, 'vitastor', vitastor, 'vitastor.c'],
- ]
-   if m[0].found()
-     if enable_modules
-diff --git a/configure b/configure
-index c77f7b1020..5f534e8484 100755
---- a/configure
-+++ b/configure
-@@ -389,6 +389,7 @@ trace_backends="log"
- trace_file="trace"
- spice="$default_feature"
- rbd="auto"
-+vitastor="auto"
- smartcard="$default_feature"
- u2f="auto"
- libusb="$default_feature"
-@@ -1280,6 +1281,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="enabled"
-   ;;
-+  --disable-vitastor) vitastor="disabled"
-+  ;;
-+  --enable-vitastor) vitastor="enabled"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1867,6 +1872,7 @@ disabled with --disable-FEATURE, default is enabled if available
-   vhost-vdpa      vhost-vdpa kernel backend support
-   spice           spice
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -6423,7 +6429,7 @@ NINJA=$ninja $meson setup \
-         -Dcapstone=$capstone -Dslirp=$slirp -Dfdt=$fdt -Dbrlapi=$brlapi \
-         -Dcurl=$curl -Dglusterfs=$glusterfs -Dbzip2=$bzip2 -Dlibiscsi=$libiscsi \
-         -Dlibnfs=$libnfs -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\
--        -Drbd=$rbd -Dlzo=$lzo -Dsnappy=$snappy -Dlzfse=$lzfse \
-+        -Drbd=$rbd -Dvitastor=$vitastor -Dlzo=$lzo -Dsnappy=$snappy -Dlzfse=$lzfse \
-         -Dzstd=$zstd -Dseccomp=$seccomp -Dvirtfs=$virtfs -Dcap_ng=$cap_ng \
-         -Dattr=$attr -Ddefault_devices=$default_devices \
-         -Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \
-diff --git a/meson.build b/meson.build
-index c6f4b0cf5e..3dc7f7b463 100644
---- a/meson.build
-+++ b/meson.build
-@@ -720,6 +720,26 @@ if not get_option('rbd').auto() or have_block
-   endif
- endif
- 
-+vitastor = not_found
-+if not get_option('vitastor').auto() or have_block
-+  libvitastor_client = cc.find_library('vitastor_client', has_headers: ['vitastor_c.h'],
-+    required: get_option('vitastor'), kwargs: static_kwargs)
-+  if libvitastor_client.found()
-+    if cc.links('''
-+      #include <vitastor_c.h>
-+      int main(void) {
-+        vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+        return 0;
-+      }''', dependencies: libvitastor_client)
-+      vitastor = declare_dependency(dependencies: libvitastor_client)
-+    elif get_option('vitastor').enabled()
-+      error('could not link libvitastor_client')
-+    else
-+      warning('could not link libvitastor_client, disabling')
-+    endif
-+  endif
-+endif
-+
- glusterfs = not_found
- glusterfs_ftruncate_has_stat = false
- glusterfs_iocb_has_stat = false
-@@ -1118,6 +1138,7 @@ config_host_data.set('CONFIG_LIBCAP_NG', libcap_ng.found())
- config_host_data.set('CONFIG_LIBISCSI', libiscsi.found())
- config_host_data.set('CONFIG_LIBNFS', libnfs.found())
- config_host_data.set('CONFIG_RBD', rbd.found())
-+config_host_data.set('CONFIG_VITASTOR', vitastor.found())
- config_host_data.set('CONFIG_SDL', sdl.found())
- config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
- config_host_data.set('CONFIG_SECCOMP', seccomp.found())
-@@ -2683,6 +2704,7 @@ summary_info += {'libcap-ng support': libcap_ng.found()}
- # TODO: add back protocol and server version
- summary_info += {'spice support':     config_host.has_key('CONFIG_SPICE')}
- summary_info += {'rbd support':       rbd.found()}
-+summary_info += {'vitastor support':  vitastor.found()}
- summary_info += {'xfsctl support':    config_host.has_key('CONFIG_XFS')}
- summary_info += {'smartcard support': config_host.has_key('CONFIG_SMARTCARD')}
- summary_info += {'U2F support':       u2f.found()}
-diff --git a/meson_options.txt b/meson_options.txt
-index 9734019995..bc93963b27 100644
---- a/meson_options.txt
-+++ b/meson_options.txt
-@@ -80,6 +80,8 @@ option('lzo', type : 'feature', value : 'auto',
-        description: 'lzo compression support')
- option('rbd', type : 'feature', value : 'auto',
-        description: 'Ceph block device driver')
-+option('vitastor', type : 'feature', value : 'auto',
-+       description: 'Vitastor block device driver')
- option('gtk', type : 'feature', value : 'auto',
-        description: 'GTK+ user interface')
- option('sdl', type : 'feature', value : 'auto',
-diff --git a/qapi/block-core.json b/qapi/block-core.json
-index 6d227924d0..d14b29aa43 100644
---- a/qapi/block-core.json
-+++ b/qapi/block-core.json
-@@ -2819,7 +2819,7 @@
-             'preallocate', 'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
-             { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
-             'sheepdog',
--            'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat' ] }
-+            'ssh', 'throttle', 'vdi', 'vhdx', 'vitastor', 'vmdk', 'vpc', 'vvfat' ] }
- 
- ##
- # @BlockdevOptionsFile:
-@@ -3671,6 +3671,28 @@
-             '*snap-id': 'uint32',
-             '*tag': 'str' } }
- 
-+##
-+# @BlockdevOptionsVitastor:
-+#
-+# Driver specific block device options for vitastor
-+#
-+# @image:       Image name
-+# @inode:       Inode number
-+# @pool:        Pool ID
-+# @size:        Desired image size in bytes
-+# @config-path: Path to Vitastor configuration
-+# @etcd-host:   etcd connection address(es)
-+# @etcd-prefix: etcd key/value prefix
-+##
-+{ 'struct': 'BlockdevOptionsVitastor',
-+  'data': { '*inode': 'uint64',
-+            '*pool': 'uint64',
-+            '*size': 'uint64',
-+            '*image': 'str',
-+            '*config-path': 'str',
-+            '*etcd-host': 'str',
-+            '*etcd-prefix': 'str' } }
-+
- ##
- # @ReplicationMode:
- #
-@@ -4042,6 +4064,7 @@
-       'throttle':   'BlockdevOptionsThrottle',
-       'vdi':        'BlockdevOptionsGenericFormat',
-       'vhdx':       'BlockdevOptionsGenericFormat',
-+      'vitastor':   'BlockdevOptionsVitastor',
-       'vmdk':       'BlockdevOptionsGenericCOWFormat',
-       'vpc':        'BlockdevOptionsGenericFormat',
-       'vvfat':      'BlockdevOptionsVVFAT'
-@@ -4426,6 +4449,17 @@
-             'size':             'size',
-             '*cluster-size' :   'size' } }
- 
-+##
-+# @BlockdevCreateOptionsVitastor:
-+#
-+# Driver specific image creation options for Vitastor.
-+#
-+# @size: Size of the virtual disk in bytes
-+##
-+{ 'struct': 'BlockdevCreateOptionsVitastor',
-+  'data': { 'location':         'BlockdevOptionsVitastor',
-+            'size':             'size' } }
-+
- ##
- # @BlockdevVmdkSubformat:
- #
-@@ -4691,6 +4725,7 @@
-       'ssh':            'BlockdevCreateOptionsSsh',
-       'vdi':            'BlockdevCreateOptionsVdi',
-       'vhdx':           'BlockdevCreateOptionsVhdx',
-+      'vitastor':       'BlockdevCreateOptionsVitastor',
-       'vmdk':           'BlockdevCreateOptionsVmdk',
-       'vpc':            'BlockdevCreateOptionsVpc'
-   } }

patches/qemu-6.1-vitastor.patch

@@ -74,115 +74,15 @@ Index: qemu-6.1+dfsg/qapi/block-core.json
        'vmdk':           'BlockdevCreateOptionsVmdk',
        'vpc':            'BlockdevCreateOptionsVpc'
    } }
-Index: qemu-6.1+dfsg/block/meson.build
+Index: qemu-6.1+dfsg/scripts/modules/module_block.py
 ===================================================================
---- qemu-6.1+dfsg.orig/block/meson.build
-+++ qemu-6.1+dfsg/block/meson.build
-@@ -78,6 +78,7 @@ foreach m : [
-   [libnfs, 'nfs', files('nfs.c')],
-   [libssh, 'ssh', files('ssh.c')],
-   [rbd, 'rbd', files('rbd.c')],
-+  [vitastor, 'vitastor', files('vitastor.c')],
- ]
-   if m[0].found()
-     module_ss = ss.source_set()
-Index: qemu-6.1+dfsg/configure
-===================================================================
---- qemu-6.1+dfsg.orig/configure
-+++ qemu-6.1+dfsg/configure
-@@ -375,6 +375,7 @@ trace_file="trace"
- spice="$default_feature"
- spice_protocol="auto"
- rbd="auto"
-+vitastor="auto"
- smartcard="auto"
- u2f="auto"
- libusb="auto"
-@@ -1292,6 +1293,10 @@ for opt do
-   ;;
-   --enable-rbd) rbd="enabled"
-   ;;
-+  --disable-vitastor) vitastor="disabled"
-+  ;;
-+  --enable-vitastor) vitastor="enabled"
-+  ;;
-   --disable-xfsctl) xfs="no"
-   ;;
-   --enable-xfsctl) xfs="yes"
-@@ -1916,6 +1921,7 @@ disabled with --disable-FEATURE, default
-   spice           spice
-   spice-protocol  spice-protocol
-   rbd             rados block device (rbd)
-+  vitastor        vitastor block device
-   libiscsi        iscsi support
-   libnfs          nfs support
-   smartcard       smartcard support (libcacard)
-@@ -5202,7 +5208,7 @@ if test "$skip_meson" = no; then
-         -Dcapstone=$capstone -Dslirp=$slirp -Dfdt=$fdt -Dbrlapi=$brlapi \
-         -Dcurl=$curl -Dglusterfs=$glusterfs -Dbzip2=$bzip2 -Dlibiscsi=$libiscsi \
-         -Dlibnfs=$libnfs -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\
--        -Drbd=$rbd -Dlzo=$lzo -Dsnappy=$snappy -Dlzfse=$lzfse -Dlibxml2=$libxml2 \
-+        -Drbd=$rbd -Dvitastor=$vitastor -Dlzo=$lzo -Dsnappy=$snappy -Dlzfse=$lzfse -Dlibxml2=$libxml2 \
-         -Dlibdaxctl=$libdaxctl -Dlibpmem=$libpmem -Dlinux_io_uring=$linux_io_uring \
-         -Dgnutls=$gnutls -Dnettle=$nettle -Dgcrypt=$gcrypt -Dauth_pam=$auth_pam \
-         -Dzstd=$zstd -Dseccomp=$seccomp -Dvirtfs=$virtfs -Dcap_ng=$cap_ng \
-Index: qemu-6.1+dfsg/meson.build
-===================================================================
---- qemu-6.1+dfsg.orig/meson.build
-+++ qemu-6.1+dfsg/meson.build
-@@ -729,6 +729,26 @@ if not get_option('rbd').auto() or have_
-   endif
- endif
+--- qemu-6.1+dfsg.orig/scripts/modules/module_block.py
++++ qemu-6.1+dfsg/scripts/modules/module_block.py
+@@ -86,6 +86,7 @@ if __name__ == '__main__':
+     output_file = sys.argv[1]
+     with open(output_file, 'w') as fheader:
+         print_top(fheader)
++        add_module(fheader, "vitastor", "vitastor", "vitastor")
  
-+vitastor = not_found
-+if not get_option('vitastor').auto() or have_block
-+  libvitastor_client = cc.find_library('vitastor_client', has_headers: ['vitastor_c.h'],
-+    required: get_option('vitastor'), kwargs: static_kwargs)
-+  if libvitastor_client.found()
-+    if cc.links('''
-+      #include <vitastor_c.h>
-+      int main(void) {
-+        vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-+        return 0;
-+      }''', dependencies: libvitastor_client)
-+      vitastor = declare_dependency(dependencies: libvitastor_client)
-+    elif get_option('vitastor').enabled()
-+      error('could not link libvitastor_client')
-+    else
-+      warning('could not link libvitastor_client, disabling')
-+    endif
-+  endif
-+endif
-+
- glusterfs = not_found
- glusterfs_ftruncate_has_stat = false
- glusterfs_iocb_has_stat = false
-@@ -1264,6 +1284,7 @@ config_host_data.set('CONFIG_LIBNFS', li
- config_host_data.set('CONFIG_LINUX_IO_URING', linux_io_uring.found())
- config_host_data.set('CONFIG_LIBPMEM', libpmem.found())
- config_host_data.set('CONFIG_RBD', rbd.found())
-+config_host_data.set('CONFIG_VITASTOR', vitastor.found())
- config_host_data.set('CONFIG_SDL', sdl.found())
- config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
- config_host_data.set('CONFIG_SECCOMP', seccomp.found())
-@@ -3075,6 +3096,7 @@ summary_info += {'bpf support': libbpf.f
- # TODO: add back protocol and server version
- summary_info += {'spice support':     config_host.has_key('CONFIG_SPICE')}
- summary_info += {'rbd support':       rbd.found()}
-+summary_info += {'vitastor support':  vitastor.found()}
- summary_info += {'xfsctl support':    config_host.has_key('CONFIG_XFS')}
- summary_info += {'smartcard support': cacard.found()}
- summary_info += {'U2F support':       u2f.found()}
-Index: qemu-6.1+dfsg/meson_options.txt
-===================================================================
---- qemu-6.1+dfsg.orig/meson_options.txt
-+++ qemu-6.1+dfsg/meson_options.txt
-@@ -102,6 +102,8 @@ option('lzo', type : 'feature', value :
-        description: 'lzo compression support')
- option('rbd', type : 'feature', value : 'auto',
-        description: 'Ceph block device driver')
-+option('vitastor', type : 'feature', value : 'auto',
-+       description: 'Vitastor block device driver')
- option('gtk', type : 'feature', value : 'auto',
-        description: 'GTK+ user interface')
- option('sdl', type : 'feature', value : 'auto',
+         for filename in sys.argv[2:]:
+             if os.path.isfile(filename):

patches/qemu-make-patches.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-# QEMU patches don't include the `block/vitastor.c` file to not duplicate it in sources
-# Run this script to append its creation to all QEMU patches
-
-DIR=$(dirname $0)
-for i in "$DIR"/qemu-*-vitastor.patch "$DIR"/pve-qemu-*-vitastor.patch; do
-    if ! grep -qP '^\+\+\+ .*block/vitastor\.c' $i; then
-        echo 'Index: a/block/vitastor.c' >> $i
-        echo '===================================================================' >> $i
-        echo '--- /dev/null' >> $i
-        echo '+++ a/block/vitastor.c' >> $i
-        echo '@@ -0,0 +1,'$(wc -l "$DIR"/../src/qemu_driver.c)' @@' >> $i
-        cat "$DIR"/../src/qemu_driver.c | sed 's/^/+/' >> $i
-    fi
-done

rpm/build-tarball.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-# Vitastor depends on QEMU and/or FIO headers, but QEMU and FIO don't have -devel packages
+# Vitastor depends on QEMU and FIO headers, but QEMU and FIO don't have -devel packages
 # So we have to copy their headers into the source tarball
 
 set -e
@@ -18,11 +18,34 @@ else
 fi
 cd ~/rpmbuild/SPECS
 rpmbuild -bp fio.spec
+perl -i -pe 's/^make V=1/exit 0; make V=1/' qemu*.spec
+rpmbuild -bc qemu*.spec
+perl -i -pe 's/^exit 0; make V=1/make V=1/' qemu*.spec
+cd ~/rpmbuild/BUILD/qemu*/
+rm -rf $VITASTOR/qemu $VITASTOR/fio
+mkdir -p $VITASTOR/qemu/b/qemu
+make -j8 config-host.h
+cp config-host.h $VITASTOR/qemu/b/qemu
+cp -r include $VITASTOR/qemu
+if [ -f qapi-schema.json ]; then
+    # QEMU 2.0
+    make qapi-types.h
+    cp qapi-types.h $VITASTOR/qemu/b/qemu
+else
+    # QEMU 3.0+
+    make qapi
+    cp -r qapi $VITASTOR/qemu/b/qemu
+fi
 cd $VITASTOR
+sh copy-qemu-includes.sh
+rm -rf qemu
+mv qemu-copy qemu
 ln -s ~/rpmbuild/BUILD/fio*/ fio
 sh copy-fio-includes.sh
 rm fio
 mv fio-copy fio
 FIO=`rpm -qi fio | perl -e 'while(<>) { /^Epoch[\s:]+(\S+)/ && print "$1:"; /^Version[\s:]+(\S+)/ && print $1; /^Release[\s:]+(\S+)/ && print "-$1"; }'`
+QEMU=`rpm -qi qemu qemu-kvm | perl -e 'while(<>) { /^Epoch[\s:]+(\S+)/ && print "$1:"; /^Version[\s:]+(\S+)/ && print $1; /^Release[\s:]+(\S+)/ && print "-$1"; }'`
 perl -i -pe 's/(Requires:\s*fio)([^\n]+)?/$1 = '$FIO'/' $VITASTOR/rpm/vitastor-el$EL.spec
-tar --transform 's#^#vitastor-0.6.12/#' --exclude 'rpm/*.rpm' -czf $VITASTOR/../vitastor-0.6.12$(rpm --eval '%dist').tar.gz *
+perl -i -pe 's/(Requires:\s*qemu(?:-kvm)?)([^\n]+)?/$1 = '$QEMU'/' $VITASTOR/rpm/vitastor-el$EL.spec
+tar --transform 's#^#vitastor-0.6.8/#' --exclude 'rpm/*.rpm' -czf $VITASTOR/../vitastor-0.6.8$(rpm --eval '%dist').tar.gz *

rpm/qemu-el8.Dockerfile

@@ -1,6 +1,3 @@
-# This is an attempt to automatically build patched RPM specs
-# More or less broken, better use *.spec.patch for now (and copy src/qemu_driver.c to SOURCES/qemu-vitastor.c)
-
 # Build packages for CentOS 8 inside a container
 # cd ..; podman build -t qemu-el8 -v `pwd`/packages:/root/packages -f rpm/qemu-el8.Dockerfile .
 

rpm/qemu-kvm-4.2-el8.spec.patch

@@ -1,112 +0,0 @@
---- qemu-kvm.spec.orig	2021-12-01 22:10:58.967935539 +0000
-+++ qemu-kvm.spec	2021-12-01 22:14:38.530117175 +0000
-@@ -57,6 +57,7 @@ Requires: %{name}-block-gluster = %{epoc
- %endif                                                           \
- Requires: %{name}-block-iscsi = %{epoch}:%{version}-%{release}   \
- Requires: %{name}-block-rbd = %{epoch}:%{version}-%{release}     \
-+Requires: %{name}-block-vitastor = %{epoch}:%{version}-%{release}\
- Requires: %{name}-block-ssh = %{epoch}:%{version}-%{release}
- 
- # Macro to properly setup RHEL/RHEV conflict handling
-@@ -67,7 +68,7 @@ Obsoletes: %1-rhev
- Summary: QEMU is a machine emulator and virtualizer
- Name: qemu-kvm
- Version: 4.2.0
--Release: 29%{?dist}.6
-+Release: 32.vitastor%{?dist}.6
- # Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
- Epoch: 15
- License: GPLv2 and GPLv2+ and CC-BY
-@@ -102,6 +103,7 @@ Source33: qemu-pr-helper.socket
- Source34: 81-kvm-rhel.rules
- Source35: udev-kvm-check.c
- Source36: README.tests
-+Source37: qemu-vitastor.c
- 
- 
- Patch0005: 0005-Initial-redhat-build.patch
-@@ -825,6 +827,7 @@ Patch331: kvm-Drop-bogus-IPv6-messages.p
- Patch333: kvm-virtiofsd-Whitelist-fchmod.patch
- # For bz#1883869 - virtiofsd core dump in KATA Container [rhel-8.2.1.z]
- Patch334: kvm-virtiofsd-avoid-proc-self-fd-tempdir.patch
-+Patch335: qemu-4.2-vitastor.patch
- 
- BuildRequires: wget
- BuildRequires: rpm-build
-@@ -861,6 +864,7 @@ BuildRequires: libcurl-devel
- BuildRequires: libssh-devel
- BuildRequires: librados-devel
- BuildRequires: librbd-devel
-+BuildRequires: vitastor-client-devel
- %if %{have_gluster}
- # For gluster block driver
- BuildRequires: glusterfs-api-devel
-@@ -1095,6 +1099,14 @@ Install this package if you want to acce
- using the rbd protocol.
- 
- 
-+%package  block-vitastor
-+Summary: QEMU Vitastor block driver
-+Requires: %{name}-common%{?_isa} = %{epoch}:%{version}-%{release}
-+
-+%description block-vitastor
-+This package provides the additional Vitastor block driver for QEMU.
-+
-+
- %package  block-ssh
- Summary: QEMU SSH block driver
- Requires: %{name}-common%{?_isa} = %{epoch}:%{version}-%{release}
-@@ -1109,6 +1121,7 @@ the Secure Shell (SSH) protocol.
- %prep
- %setup -n qemu-%{version}
- %autopatch -p1
-+cp %{SOURCE37} ./block/vitastor.c
- 
- %build
- %global buildarch %{kvm_target}-softmmu
-@@ -1116,7 +1129,7 @@ the Secure Shell (SSH) protocol.
- # --build-id option is used for giving info to the debug packages.
- buildldflags="VL_LDFLAGS=-Wl,--build-id"
- 
--%global block_drivers_list qcow2,raw,file,host_device,nbd,iscsi,rbd,blkdebug,luks,null-co,nvme,copy-on-read,throttle
-+%global block_drivers_list qcow2,raw,file,host_device,nbd,iscsi,rbd,vitastor,blkdebug,luks,null-co,nvme,copy-on-read,throttle
- 
- %if 0%{have_gluster}
-     %global block_drivers_list %{block_drivers_list},gluster
-@@ -1131,7 +1144,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
-  --docdir="%{qemudocdir}" \
-  --libexecdir="%{_libexecdir}" \
-  --extra-ldflags="-Wl,--build-id -Wl,-z,relro -Wl,-z,now" \
-- --extra-cflags="%{optflags}" \
-+ --extra-cflags="%{optflags} -DRHEL_BDRV_CO_TRUNCATE_FLAGS" \
-  --with-pkgversion="%{name}-%{version}-%{release}" \
-  --with-confsuffix=/"%{name}" \
-  --firmwarepath=%{_prefix}/share/qemu-firmware \
-@@ -1152,6 +1165,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
-   --disable-numa \
- %endif
-   --enable-rbd \
-+  --enable-vitastor \
- %if 0%{have_librdma}
-   --enable-rdma \
- %else
-@@ -1192,9 +1206,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
- %endif
-   --python=%{__python3} \
-   --target-list="%{buildarch}" \
--  --block-drv-rw-whitelist=%{block_drivers_list} \
-   --audio-drv-list= \
--  --block-drv-ro-whitelist=vmdk,vhdx,vpc,https,ssh \
-   --with-coroutine=ucontext \
-   --tls-priority=NORMAL \
-   --disable-bluez \
-@@ -1750,6 +1762,9 @@ useradd -r -u 107 -g qemu -G kvm -d / -s
- %files block-rbd
- %{_libdir}/qemu-kvm/block-rbd.so
- 
-+%files block-vitastor
-+%{_libdir}/qemu-kvm/block-vitastor.so
-+
- %files block-ssh
- %{_libdir}/qemu-kvm/block-ssh.so
- 

rpm/qemu-kvm-6.0-el8.spec.patch

@@ -1,103 +0,0 @@
---- qemu-kvm_6.0.spec.orig	2021-10-22 13:22:07.000000000 +0000
-+++ qemu-kvm_6.0.spec	2021-12-01 22:43:26.095508618 +0000
-@@ -67,6 +67,7 @@ Requires: %{name}-hw-usbredir = %{epoch}
- %endif                                                           \
- Requires: %{name}-block-iscsi = %{epoch}:%{version}-%{release}   \
- Requires: %{name}-block-rbd = %{epoch}:%{version}-%{release}     \
-+Requires: %{name}-block-vitastor = %{epoch}:%{version}-%{release}\
- Requires: %{name}-block-ssh = %{epoch}:%{version}-%{release}
- 
- # Macro to properly setup RHEL/RHEV conflict handling
-@@ -77,7 +78,7 @@ Obsoletes: %1-rhev <= %{epoch}:%{version
- Summary: QEMU is a machine emulator and virtualizer
- Name: qemu-kvm
- Version: 6.0.0
--Release: 33%{?dist}
-+Release: 33.vitastor%{?dist}
- # Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
- Epoch: 15
- License: GPLv2 and GPLv2+ and CC-BY
-@@ -112,6 +113,7 @@ Source33: qemu-pr-helper.socket
- Source34: 81-kvm-rhel.rules
- Source35: udev-kvm-check.c
- Source36: README.tests
-+Source37: qemu-vitastor.c
- 
- 
- Patch0001: 0001-redhat-Adding-slirp-to-the-exploded-tree.patch
-@@ -342,6 +344,7 @@ Patch109: kvm-virtio-balloon-Fix-page-po
- Patch110: kvm-virtio-net-fix-use-after-unmap-free-for-sg.patch
- # For bz#1999141 - migration fails with: "qemu-kvm: get_pci_config_device: Bad config data: i=0x9a read: 3 device: 2 cmask: ff wmask: 0 w1cmask:0"
- Patch111: kvm-Fix-virtio-net-pci-vectors-compat.patch
-+Patch112: qemu-6.0-vitastor.patch
- 
- BuildRequires: wget
- BuildRequires: rpm-build
-@@ -379,6 +382,7 @@ BuildRequires: libcurl-devel
- BuildRequires: libssh-devel
- BuildRequires: librados-devel
- BuildRequires: librbd-devel
-+BuildRequires: vitastor-client-devel
- %if %{have_gluster}
- # For gluster block driver
- BuildRequires: glusterfs-api-devel
-@@ -625,6 +629,14 @@ Install this package if you want to acce
- using the rbd protocol.
- 
- 
-+%package  block-vitastor
-+Summary: QEMU Vitastor block driver
-+Requires: %{name}-common%{?_isa} = %{epoch}:%{version}-%{release}
-+
-+%description block-vitastor
-+This package provides the additional Vitastor block driver for QEMU.
-+
-+
- %package  block-ssh
- Summary: QEMU SSH block driver
- Requires: %{name}-common%{?_isa} = %{epoch}:%{version}-%{release}
-@@ -678,6 +690,7 @@ This package provides usbredir support.
- rm -fr slirp
- mkdir slirp
- %autopatch -p1
-+cp %{SOURCE37} ./block/vitastor.c
- 
- %global qemu_kvm_build qemu_kvm_build
- %global qemu_kiwi_build qemu_kiwi_src/build
-@@ -701,7 +714,7 @@ mkdir -p %{qemu_kvm_build}
- # --build-id option is used for giving info to the debug packages.
- buildldflags="VL_LDFLAGS=-Wl,--build-id"
- 
--%global block_drivers_list qcow2,raw,file,host_device,nbd,iscsi,rbd,blkdebug,luks,null-co,nvme,copy-on-read,throttle
-+%global block_drivers_list qcow2,raw,file,host_device,nbd,iscsi,rbd,vitastor,blkdebug,luks,null-co,nvme,copy-on-read,throttle
- 
- %if 0%{have_gluster}
-     %global block_drivers_list %{block_drivers_list},gluster
-@@ -894,6 +907,7 @@ pushd %{qemu_kvm_build}
- %endif
-   --enable-pie \
-   --enable-rbd \
-+  --enable-vitastor \
- %if 0%{have_librdma}
-   --enable-rdma \
- %endif
-@@ -977,9 +991,7 @@ find ../default-configs -name "*-rh-devi
-   --firmwarepath=%{_prefix}/share/qemu-firmware \
-   --meson="%{__meson}" \
-   --target-list="%{buildarch}" \
--  --block-drv-rw-whitelist=%{block_drivers_list} \
-   --audio-drv-list= \
--  --block-drv-ro-whitelist=vmdk,vhdx,vpc,https,ssh \
-   --with-coroutine=ucontext \
-   --with-git=git \
-   --tls-priority=@QEMU,SYSTEM \
-@@ -1584,6 +1596,9 @@ sh %{_sysconfdir}/sysconfig/modules/kvm.
- %files block-rbd
- %{_libdir}/qemu-kvm/block-rbd.so
- 
-+%files block-vitastor
-+%{_libdir}/qemu-kvm/block-vitastor.so
-+
- %files block-ssh
- %{_libdir}/qemu-kvm/block-ssh.so
- 

rpm/qemu-kvm-el7.spec.patch

@@ -1,5 +1,5 @@
 --- qemu-kvm.spec.orig	2020-11-09 23:41:03.000000000 +0000
-+++ qemu-kvm.spec	2021-12-01 21:53:30.895747529 +0000
++++ qemu-kvm.spec	2020-12-06 10:44:24.207640963 +0000
 @@ -2,7 +2,7 @@
  %global SLOF_gittagcommit 899d9883
  
@@ -9,24 +9,25 @@
  %global have_opengl   1
  %global have_fdt      0
  %global have_gluster  1
-@@ -57,6 +57,7 @@ Requires: %{name}-block-gluster = %{epoc
+@@ -56,7 +56,7 @@ Requires: %{name}-block-curl = %{epoch}:
+ Requires: %{name}-block-gluster = %{epoch}:%{version}-%{release} \
  %endif                                                           \
  Requires: %{name}-block-iscsi = %{epoch}:%{version}-%{release}   \
- Requires: %{name}-block-rbd = %{epoch}:%{version}-%{release}     \
-+Requires: %{name}-block-vitastor = %{epoch}:%{version}-%{release}\
+-Requires: %{name}-block-rbd = %{epoch}:%{version}-%{release}     \
++#Requires: %{name}-block-rbd = %{epoch}:%{version}-%{release}     \
  Requires: %{name}-block-ssh = %{epoch}:%{version}-%{release}
  
  # Macro to properly setup RHEL/RHEV conflict handling
-@@ -67,7 +68,7 @@ Obsoletes: %1-rhev
+@@ -67,7 +67,7 @@ Obsoletes: %1-rhev
  Summary: QEMU is a machine emulator and virtualizer
  Name: qemu-kvm
  Version: 4.2.0
 -Release: 29.vitastor%{?dist}.6
-+Release: 32.vitastor%{?dist}.6
++Release: 30.vitastor%{?dist}.6
  # Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
  Epoch: 15
  License: GPLv2 and GPLv2+ and CC-BY
-@@ -99,9 +100,10 @@ Source30: kvm-s390x.conf
+@@ -99,8 +99,8 @@ Source30: kvm-s390x.conf
  Source31: kvm-x86.conf
  Source32: qemu-pr-helper.service
  Source33: qemu-pr-helper.socket
@@ -35,11 +36,9 @@
 +#Source34: 81-kvm-rhel.rules
 +#Source35: udev-kvm-check.c
  Source36: README.tests
-+Source37: qemu-vitastor.c
  
  
- Patch0005: 0005-Initial-redhat-build.patch
-@@ -825,7 +827,9 @@ Patch331: kvm-Drop-bogus-IPv6-messages.p
+@@ -825,7 +825,9 @@ Patch331: kvm-Drop-bogus-IPv6-messages.p
  Patch333: kvm-virtiofsd-Whitelist-fchmod.patch
  # For bz#1883869 - virtiofsd core dump in KATA Container [rhel-8.2.1.z]
  Patch334: kvm-virtiofsd-avoid-proc-self-fd-tempdir.patch
@@ -50,7 +49,7 @@
  
  BuildRequires: wget
  BuildRequires: rpm-build
-@@ -842,7 +846,8 @@ BuildRequires: pciutils-devel
+@@ -842,7 +844,8 @@ BuildRequires: pciutils-devel
  BuildRequires: libiscsi-devel
  BuildRequires: ncurses-devel
  BuildRequires: libattr-devel
@@ -60,7 +59,7 @@
  %if %{have_usbredir}
  BuildRequires: usbredir-devel >= 0.7.1
  %endif
-@@ -856,12 +861,13 @@ BuildRequires: virglrenderer-devel
+@@ -856,12 +859,12 @@ BuildRequires: virglrenderer-devel
  # For smartcard NSS support
  BuildRequires: nss-devel
  %endif
@@ -71,13 +70,12 @@
  BuildRequires: libssh-devel
 -BuildRequires: librados-devel
 -BuildRequires: librbd-devel
-+BuildRequires: librados2-devel
-+BuildRequires: librbd1-devel
-+BuildRequires: vitastor-client-devel
++#BuildRequires: librados-devel
++#BuildRequires: librbd-devel
  %if %{have_gluster}
  # For gluster block driver
  BuildRequires: glusterfs-api-devel
-@@ -955,25 +961,25 @@ hardware for a full system such as a PC
+@@ -955,25 +958,25 @@ hardware for a full system such as a PC
  
  %package -n qemu-kvm-core
  Summary: qemu-kvm core components
@@ -107,35 +105,38 @@
  # For compressed guest memory dumps
  Requires: lzo snappy
  %if %{have_kvm_setup}
-@@ -1096,6 +1102,14 @@ Install this package if you want to acce
- using the rbd protocol.
+@@ -1085,15 +1088,15 @@ This package provides the additional iSC
+ Install this package if you want to access iSCSI volumes.
+ 
+ 
+-%package  block-rbd
+-Summary: QEMU Ceph/RBD block driver
+-Requires: %{name}-common%{?_isa} = %{epoch}:%{version}-%{release}
+-
+-%description block-rbd
+-This package provides the additional Ceph/RBD block driver for QEMU.
+-
+-Install this package if you want to access remote Ceph volumes
+-using the rbd protocol.
++#%package  block-rbd
++#Summary: QEMU Ceph/RBD block driver
++#Requires: %{name}-common%{?_isa} = %{epoch}:%{version}-%{release}
++#
++#%description block-rbd
++#This package provides the additional Ceph/RBD block driver for QEMU.
++#
++#Install this package if you want to access remote Ceph volumes
++#using the rbd protocol.
  
  
-+%package  block-vitastor
-+Summary: QEMU Vitastor block driver
-+Requires: %{name}-common%{?_isa} = %{epoch}:%{version}-%{release}
-+
-+%description block-vitastor
-+This package provides the additional Vitastor block driver for QEMU.
-+
-+
  %package  block-ssh
- Summary: QEMU SSH block driver
- Requires: %{name}-common%{?_isa} = %{epoch}:%{version}-%{release}
-@@ -1110,6 +1124,7 @@ the Secure Shell (SSH) protocol.
- %prep
- %setup -n qemu-%{version}
- %autopatch -p1
-+cp %{SOURCE37} ./block/vitastor.c
- 
- %build
- %global buildarch %{kvm_target}-softmmu
-@@ -1117,12 +1132,13 @@ the Secure Shell (SSH) protocol.
+@@ -1117,12 +1120,14 @@ the Secure Shell (SSH) protocol.
  # --build-id option is used for giving info to the debug packages.
  buildldflags="VL_LDFLAGS=-Wl,--build-id"
  
 -%global block_drivers_list qcow2,raw,file,host_device,nbd,iscsi,rbd,blkdebug,luks,null-co,nvme,copy-on-read,throttle
-+%global block_drivers_list qcow2,raw,file,host_device,nbd,iscsi,rbd,vitastor,blkdebug,luks,null-co,nvme,copy-on-read,throttle
++#%global block_drivers_list qcow2,raw,file,host_device,nbd,iscsi,rbd,blkdebug,luks,null-co,nvme,copy-on-read,throttle
++%global block_drivers_list qcow2,raw,file,host_device,nbd,iscsi,blkdebug,luks,null-co,nvme,copy-on-read,throttle
  
  %if 0%{have_gluster}
      %global block_drivers_list %{block_drivers_list},gluster
@@ -145,20 +146,12 @@
  ./configure  \
   --prefix="%{_prefix}" \
   --libdir="%{_libdir}" \
-@@ -1132,7 +1148,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
-  --docdir="%{qemudocdir}" \
-  --libexecdir="%{_libexecdir}" \
-  --extra-ldflags="-Wl,--build-id -Wl,-z,relro -Wl,-z,now" \
-- --extra-cflags="%{optflags}" \
-+ --extra-cflags="%{optflags} -DRHEL_BDRV_CO_TRUNCATE_FLAGS" \
-  --with-pkgversion="%{name}-%{version}-%{release}" \
-  --with-confsuffix=/"%{name}" \
-  --firmwarepath=%{_prefix}/share/qemu-firmware \
-@@ -1153,14 +1169,15 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
+@@ -1152,15 +1157,15 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
+ %else
    --disable-numa \
  %endif
-   --enable-rbd \
-+  --enable-vitastor \
+-  --enable-rbd \
++  --disable-rbd \
  %if 0%{have_librdma}
    --enable-rdma \
  %else
@@ -172,7 +165,7 @@
    --enable-spice \
    --enable-smartcard \
    --enable-virglrenderer \
-@@ -1179,7 +1196,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
+@@ -1179,7 +1184,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
  %else
    --disable-usb-redir \
  %endif
@@ -181,7 +174,7 @@
  %ifarch x86_64
    --enable-libpmem \
  %else
-@@ -1193,9 +1210,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
+@@ -1193,9 +1198,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
  %endif
    --python=%{__python3} \
    --target-list="%{buildarch}" \
@@ -191,7 +184,7 @@
    --with-coroutine=ucontext \
    --tls-priority=NORMAL \
    --disable-bluez \
-@@ -1262,7 +1277,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
+@@ -1262,7 +1265,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
    --disable-sanitizers \
    --disable-hvf \
    --disable-whpx \
@@ -200,7 +193,7 @@
    --disable-membarrier \
    --disable-vhost-crypto \
    --disable-libxml2 \
-@@ -1308,7 +1323,7 @@ make V=1 %{?_smp_mflags} $buildldflags
+@@ -1308,7 +1311,7 @@ make V=1 %{?_smp_mflags} $buildldflags
  cp -a %{kvm_target}-softmmu/qemu-system-%{kvm_target} qemu-kvm
  
  gcc %{SOURCE6} $RPM_OPT_FLAGS $RPM_LD_FLAGS -o ksmctl
@@ -209,7 +202,7 @@
  
  %install
  %define _udevdir %(pkg-config --variable=udevdir udev)
-@@ -1343,8 +1358,8 @@ mkdir -p $RPM_BUILD_ROOT%{testsdir}/test
+@@ -1343,8 +1346,8 @@ mkdir -p $RPM_BUILD_ROOT%{testsdir}/test
  mkdir -p $RPM_BUILD_ROOT%{testsdir}/tests/qemu-iotests
  mkdir -p $RPM_BUILD_ROOT%{testsdir}/scripts/qmp
  
@@ -220,7 +213,7 @@
  
  install -m 0644 scripts/dump-guest-memory.py \
                  $RPM_BUILD_ROOT%{_datadir}/%{name}
-@@ -1562,6 +1577,8 @@ rm -rf $RPM_BUILD_ROOT%{qemudocdir}/inte
+@@ -1562,6 +1565,8 @@ rm -rf $RPM_BUILD_ROOT%{qemudocdir}/inte
  # Remove spec
  rm -rf $RPM_BUILD_ROOT%{qemudocdir}/specs
  
@@ -229,7 +222,7 @@
  %check
  export DIFF=diff; make check V=1
  
-@@ -1645,8 +1662,8 @@ useradd -r -u 107 -g qemu -G kvm -d / -s
+@@ -1645,8 +1650,8 @@ useradd -r -u 107 -g qemu -G kvm -d / -s
  %config(noreplace) %{_sysconfdir}/sysconfig/ksm
  %{_unitdir}/ksmtuned.service
  %{_sbindir}/ksmtuned
@@ -240,7 +233,7 @@
  %ghost %{_sysconfdir}/kvm
  %config(noreplace) %{_sysconfdir}/ksmtuned.conf
  %dir %{_sysconfdir}/%{name}
-@@ -1711,8 +1728,8 @@ useradd -r -u 107 -g qemu -G kvm -d / -s
+@@ -1711,8 +1716,8 @@ useradd -r -u 107 -g qemu -G kvm -d / -s
  %{_libexecdir}/vhost-user-gpu
  %{_datadir}/%{name}/vhost-user/50-qemu-gpu.json
  %endif
@@ -251,13 +244,14 @@
  
  %files -n qemu-img
  %defattr(-,root,root)
-@@ -1751,6 +1768,9 @@ useradd -r -u 107 -g qemu -G kvm -d / -s
- %files block-rbd
- %{_libdir}/qemu-kvm/block-rbd.so
+@@ -1748,8 +1753,8 @@ useradd -r -u 107 -g qemu -G kvm -d / -s
+ %files block-iscsi
+ %{_libdir}/qemu-kvm/block-iscsi.so
+ 
+-%files block-rbd
+-%{_libdir}/qemu-kvm/block-rbd.so
++#%files block-rbd
++#%{_libdir}/qemu-kvm/block-rbd.so
  
-+%files block-vitastor
-+%{_libdir}/qemu-kvm/block-vitastor.so
-+
  %files block-ssh
  %{_libdir}/qemu-kvm/block-ssh.so
- 

rpm/qemu-kvm.spec.patch

@@ -0,0 +1,29 @@
+--- qemu-kvm.spec	2020-12-05 13:13:54.388623517 +0000
++++ qemu-kvm.spec	2020-12-05 13:13:58.728696598 +0000
+@@ -67,7 +67,7 @@ Obsoletes: %1-rhev
+ Summary: QEMU is a machine emulator and virtualizer
+ Name: qemu-kvm
+ Version: 4.2.0
+-Release: 29%{?dist}.6
++Release: 29.vitastor%{?dist}.6
+ # Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
+ Epoch: 15
+ License: GPLv2 and GPLv2+ and CC-BY
+@@ -825,6 +825,7 @@ Patch331: kvm-Drop-bogus-IPv6-messages.p
+ Patch333: kvm-virtiofsd-Whitelist-fchmod.patch
+ # For bz#1883869 - virtiofsd core dump in KATA Container [rhel-8.2.1.z]
+ Patch334: kvm-virtiofsd-avoid-proc-self-fd-tempdir.patch
++Patch335: qemu-4.2-vitastor.patch
+ 
+ BuildRequires: wget
+ BuildRequires: rpm-build
+@@ -1192,9 +1193,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
+ %endif
+   --python=%{__python3} \
+   --target-list="%{buildarch}" \
+-  --block-drv-rw-whitelist=%{block_drivers_list} \
+   --audio-drv-list= \
+-  --block-drv-ro-whitelist=vmdk,vhdx,vpc,https,ssh \
+   --with-coroutine=ucontext \
+   --tls-priority=NORMAL \
+   --disable-bluez \

rpm/vitastor-el7.Dockerfile

@@ -9,11 +9,15 @@ WORKDIR /root
 RUN rm -f /etc/yum.repos.d/CentOS-Media.repo
 RUN yum -y --enablerepo=extras install centos-release-scl epel-release yum-utils rpm-build
 RUN yum -y install https://vitastor.io/rpms/centos/7/vitastor-release-1.0-1.el7.noarch.rpm
-RUN yum -y install devtoolset-9-gcc-c++ devtoolset-9-libatomic-devel gcc make cmake gperftools-devel fio rh-nodejs12 jerasure-devel gf-complete-devel rdma-core-devel
+RUN yum -y install devtoolset-9-gcc-c++ devtoolset-9-libatomic-devel gperftools-devel qemu-kvm fio rh-nodejs12 jerasure-devel gf-complete-devel
+RUN yumdownloader --disablerepo=centos-sclo-rh --source qemu-kvm
 RUN yumdownloader --disablerepo=centos-sclo-rh --source fio
+RUN rpm --nomd5 -i qemu*.src.rpm
 RUN rpm --nomd5 -i fio*.src.rpm
 RUN rm -f /etc/yum.repos.d/CentOS-Media.repo
+RUN cd ~/rpmbuild/SPECS && yum-builddep -y qemu-kvm.spec
 RUN cd ~/rpmbuild/SPECS && yum-builddep -y fio.spec
+RUN yum -y install rdma-core-devel
 
 ADD https://vitastor.io/rpms/liburing-el7/liburing-0.7-2.el7.src.rpm /root
 
@@ -34,7 +38,7 @@ ADD . /root/vitastor
 RUN set -e; \
     cd /root/vitastor/rpm; \
     sh build-tarball.sh; \
-    cp /root/vitastor-0.6.12.el7.tar.gz ~/rpmbuild/SOURCES; \
+    cp /root/vitastor-0.6.8.el7.tar.gz ~/rpmbuild/SOURCES; \
     cp vitastor-el7.spec ~/rpmbuild/SPECS/vitastor.spec; \
     cd ~/rpmbuild/SPECS/; \
     rpmbuild -ba vitastor.spec; \

rpm/vitastor-el7.spec

@@ -1,11 +1,11 @@
 Name:           vitastor
-Version:        0.6.12
+Version:        0.6.8
 Release:        1%{?dist}
 Summary:        Vitastor, a fast software-defined clustered block storage
 
 License:        Vitastor Network Public License 1.1
 URL:            https://vitastor.io/
-Source0:        vitastor-0.6.12.el7.tar.gz
+Source0:        vitastor-0.6.8.el7.tar.gz
 
 BuildRequires:  liburing-devel >= 0.6
 BuildRequires:  gperftools-devel
@@ -21,6 +21,7 @@ Requires:       vitastor-mon = %{version}-%{release}
 Requires:       vitastor-client = %{version}-%{release}
 Requires:       vitastor-client-devel = %{version}-%{release}
 Requires:       vitastor-fio = %{version}-%{release}
+Requires:       vitastor-qemu = %{version}-%{release}
 
 %description
 Vitastor is a small, simple and fast clustered block storage (storage for VM drives),
@@ -82,13 +83,24 @@ Requires:       fio = 3.7-1.el7
 Vitastor fio drivers for benchmarking.
 
 
+%package -n vitastor-qemu
+Summary:        Vitastor - QEMU driver
+Group:          Development/Libraries
+Requires:       vitastor-client = %{version}-%{release}
+Requires:       qemu-kvm = 2.0.0-1.el7.6
+
+
+%description -n vitastor-qemu
+Vitastor QEMU block device driver.
+
+
 %prep
 %setup -q
 
 
 %build
 . /opt/rh/devtoolset-9/enable
-%cmake .
+%cmake . -DQEMU_PLUGINDIR=qemu-kvm
 %make_build
 
 
@@ -111,6 +123,7 @@ cp -r mon %buildroot/usr/lib/vitastor
 %files -n vitastor-osd
 %_bindir/vitastor-osd
 %_bindir/vitastor-dump-journal
+/usr/lib/vitastor/make-osd.sh
 
 
 %files -n vitastor-mon
@@ -124,7 +137,6 @@ cp -r mon %buildroot/usr/lib/vitastor
 %_bindir/vita
 %_libdir/libvitastor_blk.so*
 %_libdir/libvitastor_client.so*
-/usr/lib/vitastor/make-osd.sh
 
 
 %files -n vitastor-client-devel
@@ -138,4 +150,8 @@ cp -r mon %buildroot/usr/lib/vitastor
 %_libdir/libfio_vitastor_sec.so
 
 
+%files -n vitastor-qemu
+%_libdir/qemu-kvm/block-vitastor.so
+
+
 %changelog

rpm/vitastor-el8.Dockerfile

@@ -8,11 +8,14 @@ WORKDIR /root
 RUN rm -f /etc/yum.repos.d/CentOS-Media.repo
 RUN dnf -y install centos-release-advanced-virtualization epel-release dnf-plugins-core
 RUN yum -y install https://vitastor.io/rpms/centos/8/vitastor-release-1.0-1.el8.noarch.rpm
-RUN dnf -y install gcc-toolset-9 gcc-toolset-9-gcc-c++ gperftools-devel \
-    fio nodejs rpm-build jerasure-devel gf-complete-devel libibverbs-devel libarchive cmake
+RUN dnf --enablerepo='centos-advanced-virtualization' -y install gcc-toolset-9 gcc-toolset-9-gcc-c++ gperftools-devel qemu-kvm fio nodejs rpm-build jerasure-devel gf-complete-devel
+RUN rm -rf /var/lib/dnf/*; dnf download --disablerepo='*' --enablerepo='vitastor' --source qemu-kvm
 RUN dnf download --source fio
+RUN rpm --nomd5 -i qemu*.src.rpm
 RUN rpm --nomd5 -i fio*.src.rpm
-RUN cd ~/rpmbuild/SPECS && dnf builddep -y --enablerepo=powertools --spec fio.spec
+RUN cd ~/rpmbuild/SPECS && dnf builddep -y --enablerepo=powertools --spec qemu-kvm.spec
+RUN cd ~/rpmbuild/SPECS && dnf builddep -y --enablerepo=powertools --spec fio.spec && dnf install -y cmake
+RUN yum -y install libibverbs-devel libarchive
 
 ADD https://vitastor.io/rpms/liburing-el7/liburing-0.7-2.el7.src.rpm /root
 
@@ -26,14 +29,14 @@ RUN set -e; \
     cp ~/rpmbuild/RPMS/*/liburing* /root/packages/liburing-el8/; \
     cp ~/rpmbuild/SRPMS/liburing* /root/packages/liburing-el8/
 
-RUN rpm -i `ls /root/packages/liburing-el8/liburing-*.x86_64.rpm | grep -v debug`
+RUN rpm -i `ls /root/packages/liburing-el7/liburing-*.x86_64.rpm | grep -v debug`
 
 ADD . /root/vitastor
 
 RUN set -e; \
     cd /root/vitastor/rpm; \
     sh build-tarball.sh; \
-    cp /root/vitastor-0.6.12.el8.tar.gz ~/rpmbuild/SOURCES; \
+    cp /root/vitastor-0.6.8.el8.tar.gz ~/rpmbuild/SOURCES; \
     cp vitastor-el8.spec ~/rpmbuild/SPECS/vitastor.spec; \
     cd ~/rpmbuild/SPECS/; \
     rpmbuild -ba vitastor.spec; \

rpm/vitastor-el8.spec

@@ -1,11 +1,11 @@
 Name:           vitastor
-Version:        0.6.12
+Version:        0.6.8
 Release:        1%{?dist}
 Summary:        Vitastor, a fast software-defined clustered block storage
 
 License:        Vitastor Network Public License 1.1
 URL:            https://vitastor.io/
-Source0:        vitastor-0.6.12.el8.tar.gz
+Source0:        vitastor-0.6.8.el8.tar.gz
 
 BuildRequires:  liburing-devel >= 0.6
 BuildRequires:  gperftools-devel
@@ -20,6 +20,7 @@ Requires:       vitastor-mon = %{version}-%{release}
 Requires:       vitastor-client = %{version}-%{release}
 Requires:       vitastor-client-devel = %{version}-%{release}
 Requires:       vitastor-fio = %{version}-%{release}
+Requires:       vitastor-qemu = %{version}-%{release}
 
 %description
 Vitastor is a small, simple and fast clustered block storage (storage for VM drives),
@@ -80,13 +81,24 @@ Requires:       fio = 3.7-3.el8
 Vitastor fio drivers for benchmarking.
 
 
+%package -n vitastor-qemu
+Summary:        Vitastor - QEMU driver
+Group:          Development/Libraries
+Requires:       vitastor-client = %{version}-%{release}
+Requires:       qemu-kvm = 4.2.0-29.el8.6
+
+
+%description -n vitastor-qemu
+Vitastor QEMU block device driver.
+
+
 %prep
 %setup -q
 
 
 %build
 . /opt/rh/gcc-toolset-9/enable
-%cmake .
+%cmake . -DQEMU_PLUGINDIR=qemu-kvm
 %make_build
 
 
@@ -108,6 +120,7 @@ cp -r mon %buildroot/usr/lib/vitastor
 %files -n vitastor-osd
 %_bindir/vitastor-osd
 %_bindir/vitastor-dump-journal
+/usr/lib/vitastor/make-osd.sh
 
 
 %files -n vitastor-mon
@@ -121,7 +134,6 @@ cp -r mon %buildroot/usr/lib/vitastor
 %_bindir/vita
 %_libdir/libvitastor_blk.so*
 %_libdir/libvitastor_client.so*
-/usr/lib/vitastor/make-osd.sh
 
 
 %files -n vitastor-client-devel
@@ -135,4 +147,8 @@ cp -r mon %buildroot/usr/lib/vitastor
 %_libdir/libfio_vitastor_sec.so
 
 
+%files -n vitastor-qemu
+%_libdir/qemu-kvm/block-vitastor.so
+
+
 %changelog

src/CMakeLists.txt

@@ -4,7 +4,7 @@ project(vitastor)
 
 include(GNUInstallDirs)
 
-set(WITH_QEMU false CACHE BOOL "Build QEMU driver inside Vitastor source tree")
+set(WITH_QEMU true CACHE BOOL "Build QEMU driver")
 set(WITH_FIO true CACHE BOOL "Build FIO driver")
 set(QEMU_PLUGINDIR qemu CACHE STRING "QEMU plugin directory suffix (qemu-kvm on RHEL)")
 set(WITH_ASAN false CACHE BOOL "Build with AddressSanitizer")
@@ -15,7 +15,7 @@ if("${CMAKE_INSTALL_PREFIX}" MATCHES "^/usr/local/?$")
 	set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
 endif()
 
-add_definitions(-DVERSION="0.6.12")
+add_definitions(-DVERSION="0.6.8")
 add_definitions(-Wall -Wno-sign-compare -Wno-comment -Wno-parentheses -Wno-pointer-arith -fdiagnostics-color=always -I ${CMAKE_SOURCE_DIR}/src)
 if (${WITH_ASAN})
 	add_definitions(-fsanitize=address -fno-omit-frame-pointer)
@@ -88,8 +88,8 @@ if (IBVERBS_LIBRARIES)
 	set(MSGR_RDMA "msgr_rdma.cpp")
 endif (IBVERBS_LIBRARIES)
 add_library(vitastor_common STATIC
-	epoll_manager.cpp etcd_state_client.cpp messenger.cpp addr_util.cpp
-	msgr_stop.cpp msgr_op.cpp msgr_send.cpp msgr_receive.cpp ringloop.cpp ../json11/json11.cpp
+	epoll_manager.cpp etcd_state_client.cpp
+	messenger.cpp msgr_stop.cpp msgr_op.cpp msgr_send.cpp msgr_receive.cpp ringloop.cpp ../json11/json11.cpp
 	http_client.cpp osd_ops.cpp pg_states.cpp timerfd_manager.cpp base64.cpp ${MSGR_RDMA}
 )
 target_compile_options(vitastor_common PUBLIC -fPIC)
@@ -112,7 +112,6 @@ if (${WITH_FIO})
 	add_library(fio_vitastor_sec SHARED
 		fio_sec_osd.cpp
 		rw_blocking.cpp
-		addr_util.cpp
 	)
 	target_link_libraries(fio_vitastor_sec
 		tcmalloc_minimal
@@ -146,7 +145,7 @@ endif (${WITH_FIO})
 
 # vitastor-nbd
 add_executable(vitastor-nbd
-	nbd_proxy.cpp
+	nbd_proxy.cpp mmap_manager.cpp
 )
 target_link_libraries(vitastor-nbd
 	vitastor_client
@@ -154,7 +153,7 @@ target_link_libraries(vitastor-nbd
 
 # vitastor-cli
 add_executable(vitastor-cli
-	cli.cpp cli_alloc_osd.cpp cli_simple_offsets.cpp cli_df.cpp
+	cli.cpp cli_alloc_osd.cpp cli_simple_offsets.cpp
 	cli_ls.cpp cli_create.cpp cli_modify.cpp cli_flatten.cpp cli_merge.cpp cli_rm.cpp cli_snap_rm.cpp
 )
 target_link_libraries(vitastor-cli
@@ -172,7 +171,6 @@ if (${WITH_QEMU})
 	add_library(qemu_vitastor SHARED
 		qemu_driver.c
 	)
-	target_compile_options(qemu_vitastor PUBLIC -DVITASTOR_SOURCE_TREE)
 	target_include_directories(qemu_vitastor PUBLIC
 		../qemu/b/qemu
 		../qemu/include
@@ -190,11 +188,11 @@ endif (${WITH_QEMU})
 ### Test stubs
 
 # stub_osd, stub_bench, osd_test
-add_executable(stub_osd stub_osd.cpp rw_blocking.cpp addr_util.cpp)
+add_executable(stub_osd stub_osd.cpp rw_blocking.cpp mmap_manager.cpp)
 target_link_libraries(stub_osd tcmalloc_minimal)
-add_executable(stub_bench stub_bench.cpp rw_blocking.cpp addr_util.cpp)
+add_executable(stub_bench stub_bench.cpp rw_blocking.cpp)
 target_link_libraries(stub_bench tcmalloc_minimal)
-add_executable(osd_test osd_test.cpp rw_blocking.cpp addr_util.cpp)
+add_executable(osd_test osd_test.cpp rw_blocking.cpp)
 target_link_libraries(osd_test tcmalloc_minimal)
 
 # osd_rmw_test

src/addr_util.cpp

@@ -1,188 +0,0 @@
-#include <arpa/inet.h>
-#include <net/if.h>
-#include <sys/types.h>
-#include <ifaddrs.h>
-#include <string.h>
-#include <stdio.h>
-
-#include <stdexcept>
-
-#include "addr_util.h"
-
-bool string_to_addr(std::string str, bool parse_port, int default_port, struct sockaddr *addr)
-{
-    if (parse_port)
-    {
-        int p = str.rfind(':');
-        if (p != std::string::npos && !(str.length() > 0 && str[p-1] == ']')) // "[ipv6]" which contains ':'
-        {
-            char null_byte = 0;
-            int n = sscanf(str.c_str()+p+1, "%d%c", &default_port, &null_byte);
-            if (n != 1 || default_port >= 0x10000)
-                return false;
-            str = str.substr(0, p);
-        }
-    }
-    if (inet_pton(AF_INET, str.c_str(), &((struct sockaddr_in*)addr)->sin_addr) == 1)
-    {
-        addr->sa_family = AF_INET;
-        ((struct sockaddr_in*)addr)->sin_port = htons(default_port);
-        return true;
-    }
-    if (str.length() >= 2 && str[0] == '[' && str[str.length()-1] == ']')
-        str = str.substr(1, str.length()-2);
-    if (inet_pton(AF_INET6, str.c_str(), &((struct sockaddr_in6*)addr)->sin6_addr) == 1)
-    {
-        addr->sa_family = AF_INET6;
-        ((struct sockaddr_in6*)addr)->sin6_port = htons(default_port);
-        return true;
-    }
-    return false;
-}
-
-std::string addr_to_string(const sockaddr &addr)
-{
-    char peer_str[256];
-    bool ok = false;
-    int port;
-    if (addr.sa_family == AF_INET)
-    {
-        ok = !!inet_ntop(AF_INET, &((sockaddr_in*)&addr)->sin_addr, peer_str, 256);
-        port = ntohs(((sockaddr_in*)&addr)->sin_port);
-    }
-    else if (addr.sa_family == AF_INET6)
-    {
-        ok = !!inet_ntop(AF_INET6, &((sockaddr_in6*)&addr)->sin6_addr, peer_str, 256);
-        port = ntohs(((sockaddr_in6*)&addr)->sin6_port);
-    }
-    else
-        throw std::runtime_error("Unknown address family "+std::to_string(addr.sa_family));
-    if (!ok)
-        throw std::runtime_error(std::string("inet_ntop: ") + strerror(errno));
-    return std::string(peer_str)+":"+std::to_string(port);
-}
-
-static bool cidr_match(const in_addr &addr, const in_addr &net, uint8_t bits)
-{
-    if (bits == 0)
-    {
-        // C99 6.5.7 (3): u32 << 32 is undefined behaviour
-        return true;
-    }
-    return !((addr.s_addr ^ net.s_addr) & htonl(0xFFFFFFFFu << (32 - bits)));
-}
-
-static bool cidr6_match(const in6_addr &address, const in6_addr &network, uint8_t bits)
-{
-    const uint32_t *a = address.s6_addr32;
-    const uint32_t *n = network.s6_addr32;
-    int bits_whole, bits_incomplete;
-    bits_whole = bits >> 5;         // number of whole u32
-    bits_incomplete = bits & 0x1F;  // number of bits in incomplete u32
-    if (bits_whole && memcmp(a, n, bits_whole << 2))
-        return false;
-    if (bits_incomplete)
-    {
-        uint32_t mask = htonl((0xFFFFFFFFu) << (32 - bits_incomplete));
-        if ((a[bits_whole] ^ n[bits_whole]) & mask)
-            return false;
-    }
-    return true;
-}
-
-struct addr_mask_t
-{
-    sa_family_t family;
-    in_addr ipv4;
-    in6_addr ipv6;
-    uint8_t bits;
-};
-
-std::vector<std::string> getifaddr_list(std::vector<std::string> mask_cfg, bool include_v6)
-{
-    std::vector<addr_mask_t> masks;
-    for (auto mask: mask_cfg)
-    {
-        unsigned bits = 0;
-        int p = mask.find('/');
-        if (p != std::string::npos)
-        {
-            char null_byte = 0;
-            if (sscanf(mask.c_str()+p+1, "%u%c", &bits, &null_byte) != 1 || bits > 128)
-            {
-                throw std::runtime_error((include_v6 ? "Invalid IPv4 address mask: " : "Invalid IP address mask: ") + mask);
-            }
-            mask = mask.substr(0, p);
-        }
-        in_addr ipv4;
-        in6_addr ipv6;
-        if (inet_pton(AF_INET, mask.c_str(), &ipv4) == 1)
-        {
-            if (bits > 32)
-            {
-                throw std::runtime_error((include_v6 ? "Invalid IPv4 address mask: " : "Invalid IP address mask: ") + mask);
-            }
-            masks.push_back((addr_mask_t){ .family = AF_INET, .ipv4 = ipv4, .bits = (uint8_t)bits });
-        }
-        else if (include_v6 && inet_pton(AF_INET6, mask.c_str(), &ipv6) == 1)
-        {
-            masks.push_back((addr_mask_t){ .family = AF_INET6, .ipv6 = ipv6, .bits = (uint8_t)bits });
-        }
-        else
-        {
-            throw std::runtime_error((include_v6 ? "Invalid IPv4 address mask: " : "Invalid IP address mask: ") + mask);
-        }
-    }
-    std::vector<std::string> addresses;
-    ifaddrs *list, *ifa;
-    if (getifaddrs(&list) == -1)
-    {
-        throw std::runtime_error(std::string("getifaddrs: ") + strerror(errno));
-    }
-    for (ifa = list; ifa != NULL; ifa = ifa->ifa_next)
-    {
-        if (!ifa->ifa_addr)
-        {
-            continue;
-        }
-        int family = ifa->ifa_addr->sa_family;
-        if ((family == AF_INET || family == AF_INET6 && include_v6) &&
-            (ifa->ifa_flags & (IFF_UP | IFF_RUNNING | IFF_LOOPBACK)) == (IFF_UP | IFF_RUNNING))
-        {
-            void *addr_ptr;
-            if (family == AF_INET)
-            {
-                addr_ptr = &((sockaddr_in *)ifa->ifa_addr)->sin_addr;
-            }
-            else
-            {
-                addr_ptr = &((sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
-            }
-            if (masks.size() > 0)
-            {
-                int i;
-                for (i = 0; i < masks.size(); i++)
-                {
-                    if (masks[i].family == family && (family == AF_INET
-                        ? cidr_match(*(in_addr*)addr_ptr, masks[i].ipv4, masks[i].bits)
-                        : cidr6_match(*(in6_addr*)addr_ptr, masks[i].ipv6, masks[i].bits)))
-                    {
-                        break;
-                    }
-                }
-                if (i >= masks.size())
-                {
-                    continue;
-                }
-            }
-            char addr[INET6_ADDRSTRLEN];
-            if (!inet_ntop(family, addr_ptr, addr, INET6_ADDRSTRLEN))
-            {
-                throw std::runtime_error(std::string("inet_ntop: ") + strerror(errno));
-            }
-            addresses.push_back(std::string(addr));
-        }
-    }
-    freeifaddrs(list);
-    return addresses;
-}

src/addr_util.h

@@ -1,9 +0,0 @@
-#pragma once
-
-#include <sys/socket.h>
-#include <string>
-#include <vector>
-
-bool string_to_addr(std::string str, bool parse_port, int default_port, struct sockaddr *addr);
-std::string addr_to_string(const sockaddr &addr);
-std::vector<std::string> getifaddr_list(std::vector<std::string> mask_cfg = std::vector<std::string>(), bool include_v6 = false);

src/blockstore_flush.cpp

@@ -185,7 +185,7 @@ void journal_flusher_t::release_trim()
 void journal_flusher_t::dump_diagnostics()
 {
     const char *unflushable_type = "";
-    obj_ver_id unflushable = {};
+    obj_ver_id unflushable = { 0 };
     // Try to find out if there is a flushable object for information
     for (object_id cur_oid: flush_queue)
     {
@@ -486,8 +486,8 @@ resume_1:
         if (bs->clean_entry_bitmap_size)
         {
             new_clean_bitmap = (bs->inmemory_meta
-                ? (uint8_t*)meta_new.buf + meta_new.pos*bs->clean_entry_size + sizeof(clean_disk_entry)
-                : (uint8_t*)bs->clean_bitmap + (clean_loc >> bs->block_order)*(2*bs->clean_entry_bitmap_size));
+                ? meta_new.buf + meta_new.pos*bs->clean_entry_size + sizeof(clean_disk_entry)
+                : bs->clean_bitmap + (clean_loc >> bs->block_order)*(2*bs->clean_entry_bitmap_size));
             if (clean_init_bitmap)
             {
                 memset(new_clean_bitmap, 0, bs->clean_entry_bitmap_size);
@@ -533,7 +533,7 @@ resume_1:
                 return false;
             }
             // zero out old metadata entry
-            memset((uint8_t*)meta_old.buf + meta_old.pos*bs->clean_entry_size, 0, bs->clean_entry_size);
+            memset(meta_old.buf + meta_old.pos*bs->clean_entry_size, 0, bs->clean_entry_size);
             await_sqe(15);
             data->iov = (struct iovec){ meta_old.buf, bs->meta_block_size };
             data->callback = simple_callback_w;
@@ -544,25 +544,23 @@ resume_1:
         }
         if (has_delete)
         {
-            clean_disk_entry *new_entry = (clean_disk_entry*)((uint8_t*)meta_new.buf + meta_new.pos*bs->clean_entry_size);
+            clean_disk_entry *new_entry = (clean_disk_entry*)(meta_new.buf + meta_new.pos*bs->clean_entry_size);
             if (new_entry->oid.inode != 0 && new_entry->oid != cur.oid)
             {
-                printf("Fatal error (metadata corruption or bug): tried to delete metadata entry %lu (%lx:%lx v%lu) while deleting %lx:%lx\n",
-                    clean_loc >> bs->block_order, new_entry->oid.inode, new_entry->oid.stripe,
-                    new_entry->version, cur.oid.inode, cur.oid.stripe);
+                printf("Fatal error (metadata corruption or bug): tried to delete metadata entry %lu (%lx:%lx) while deleting %lx:%lx\n",
+                    clean_loc >> bs->block_order, new_entry->oid.inode, new_entry->oid.stripe, cur.oid.inode, cur.oid.stripe);
                 exit(1);
             }
             // zero out new metadata entry
-            memset((uint8_t*)meta_new.buf + meta_new.pos*bs->clean_entry_size, 0, bs->clean_entry_size);
+            memset(meta_new.buf + meta_new.pos*bs->clean_entry_size, 0, bs->clean_entry_size);
         }
         else
         {
-            clean_disk_entry *new_entry = (clean_disk_entry*)((uint8_t*)meta_new.buf + meta_new.pos*bs->clean_entry_size);
+            clean_disk_entry *new_entry = (clean_disk_entry*)(meta_new.buf + meta_new.pos*bs->clean_entry_size);
             if (new_entry->oid.inode != 0 && new_entry->oid != cur.oid)
             {
-                printf("Fatal error (metadata corruption or bug): tried to overwrite non-zero metadata entry %lu (%lx:%lx v%lu) with %lx:%lx v%lu\n",
-                    clean_loc >> bs->block_order, new_entry->oid.inode, new_entry->oid.stripe, new_entry->version,
-                    cur.oid.inode, cur.oid.stripe, cur.version);
+                printf("Fatal error (metadata corruption or bug): tried to overwrite non-zero metadata entry %lu (%lx:%lx) with %lx:%lx\n",
+                    clean_loc >> bs->block_order, new_entry->oid.inode, new_entry->oid.stripe, cur.oid.inode, cur.oid.stripe);
                 exit(1);
             }
             new_entry->oid = cur.oid;
@@ -575,7 +573,7 @@ resume_1:
             if (bs->clean_entry_bitmap_size)
             {
                 void *bmp_ptr = bs->clean_entry_bitmap_size > sizeof(void*) ? dirty_end->second.bitmap : &dirty_end->second.bitmap;
-                memcpy((uint8_t*)(new_entry+1) + bs->clean_entry_bitmap_size, bmp_ptr, bs->clean_entry_bitmap_size);
+                memcpy((void*)(new_entry+1) + bs->clean_entry_bitmap_size, bmp_ptr, bs->clean_entry_bitmap_size);
             }
         }
         await_sqe(6);
@@ -745,15 +743,12 @@ bool journal_flusher_co::scan_dirty(int wait_base)
                 offset = dirty_it->second.offset;
                 end_offset = dirty_it->second.offset + dirty_it->second.len;
                 it = v.begin();
-                while (end_offset > offset)
+                while (1)
                 {
                     for (; it != v.end(); it++)
-                        if (it->offset+it->len > offset)
+                        if (it->offset >= offset)
                             break;
-                    // If all items end before offset or if the found item starts after end_offset, just insert the buffer
-                    // If (offset < it->offset < end_offset) insert (offset..it->offset) part
-                    // If (it->offset <= offset <= it->offset+it->len) then just skip to it->offset+it->len
-                    if (it == v.end() || it->offset > offset)
+                    if (it == v.end() || it->offset > offset && it->len > 0)
                     {
                         submit_offset = dirty_it->second.location + offset - dirty_it->second.offset;
                         submit_len = it == v.end() || it->offset >= end_offset ? end_offset-offset : it->offset-offset;
@@ -762,7 +757,7 @@ bool journal_flusher_co::scan_dirty(int wait_base)
                         if (bs->journal.inmemory)
                         {
                             // Take it from memory
-                            memcpy(it->buf, (uint8_t*)bs->journal.buffer + submit_offset, submit_len);
+                            memcpy(it->buf, bs->journal.buffer + submit_offset, submit_len);
                         }
                         else
                         {
@@ -777,7 +772,7 @@ bool journal_flusher_co::scan_dirty(int wait_base)
                         }
                     }
                     offset = it->offset+it->len;
-                    if (it == v.end())
+                    if (it == v.end() || offset >= end_offset)
                         break;
                 }
             }
@@ -826,7 +821,7 @@ bool journal_flusher_co::modify_meta_read(uint64_t meta_loc, flusher_meta_write_
     wr.pos = ((meta_loc >> bs->block_order) % (bs->meta_block_size / bs->clean_entry_size));
     if (bs->inmemory_meta)
     {
-        wr.buf = (uint8_t*)bs->metadata_buffer + wr.sector;
+        wr.buf = bs->metadata_buffer + wr.sector;
         return true;
     }
     wr.it = flusher->meta_sectors.find(wr.sector);

src/blockstore_impl.cpp

@@ -142,6 +142,7 @@ void blockstore_impl_t::loop()
                     continue;
                 }
             }
+            unsigned ring_space = ringloop->space_left();
             unsigned prev_sqe_pos = ringloop->save();
             // 0 = can't submit
             // 1 = in progress
@@ -211,6 +212,7 @@ void blockstore_impl_t::loop()
                 ringloop->restore(prev_sqe_pos);
                 if (PRIV(op)->wait_for == WAIT_SQE)
                 {
+                    PRIV(op)->wait_detail = 1 + ring_space;
                     // ring is full, stop submission
                     break;
                 }
@@ -233,12 +235,6 @@ void blockstore_impl_t::loop()
         {
             throw std::runtime_error(std::string("io_uring_submit: ") + strerror(-ret));
         }
-        for (auto s: journal.submitting_sectors)
-        {
-            // Mark journal sector writes as submitted
-            journal.sector_info[s].submit_id = 0;
-        }
-        journal.submitting_sectors.clear();
         if ((initial_ring_space - ringloop->space_left()) > 0)
         {
             live = true;
@@ -280,7 +276,7 @@ void blockstore_impl_t::check_wait(blockstore_op_t *op)
 {
     if (PRIV(op)->wait_for == WAIT_SQE)
     {
-        if (ringloop->sqes_left() < PRIV(op)->wait_detail)
+        if (ringloop->space_left() < PRIV(op)->wait_detail)
         {
             // stop submission if there's still no free space
 #ifdef BLOCKSTORE_DEBUG
@@ -370,7 +366,7 @@ void blockstore_impl_t::enqueue_op(blockstore_op_t *op)
                     };
                 }
                 unstable_writes.clear();
-                op->callback = [old_callback](blockstore_op_t *op)
+                op->callback = [this, old_callback](blockstore_op_t *op)
                 {
                     obj_ver_id *vers = (obj_ver_id*)op->buf;
                     delete[] vers;

src/blockstore_impl.h

@@ -54,15 +54,6 @@
 #define IS_BIG_WRITE(st) (((st) & 0x0F) == BS_ST_BIG_WRITE)
 #define IS_DELETE(st) (((st) & 0x0F) == BS_ST_DELETE)
 
-#define BS_SUBMIT_CHECK_SQES(n) \
-    if (ringloop->sqes_left() < (n))\
-    {\
-        /* Pause until there are more requests available */\
-        PRIV(op)->wait_detail = (n);\
-        PRIV(op)->wait_for = WAIT_SQE;\
-        return 0;\
-    }
-
 #define BS_SUBMIT_GET_SQE(sqe, data) \
     BS_SUBMIT_GET_ONLY_SQE(sqe); \
     struct ring_data_t *data = ((ring_data_t*)sqe->user_data)
@@ -72,7 +63,6 @@
     if (!sqe)\
     {\
         /* Pause until there are more requests available */\
-        PRIV(op)->wait_detail = 1;\
         PRIV(op)->wait_for = WAIT_SQE;\
         return 0;\
     }
@@ -82,7 +72,6 @@
     if (!sqe)\
     {\
         /* Pause until there are more requests available */\
-        PRIV(op)->wait_detail = 1;\
         PRIV(op)->wait_for = WAIT_SQE;\
         return 0;\
     }
@@ -181,7 +170,7 @@ struct blockstore_op_private_t
     std::vector<fulfill_read_t> read_vec;
 
     // Sync, write
-    int min_flushed_journal_sector, max_flushed_journal_sector;
+    uint64_t min_flushed_journal_sector, max_flushed_journal_sector;
 
     // Write
     struct iovec iov_zerofill[3];
@@ -262,7 +251,6 @@ class blockstore_impl_t
     int data_fd;
     uint64_t meta_size, meta_area, meta_len;
     uint64_t data_size, data_len;
-    uint64_t data_device_sect, meta_device_sect, journal_device_sect;
 
     void *metadata_buffer = NULL;
 
@@ -283,7 +271,7 @@ class blockstore_impl_t
 
     friend class blockstore_init_meta;
     friend class blockstore_init_journal;
-    friend struct blockstore_journal_check_t;
+    friend class blockstore_journal_check_t;
     friend class journal_flusher_t;
     friend class journal_flusher_co;
 
@@ -294,10 +282,6 @@ class blockstore_impl_t
     void open_journal();
     uint8_t* get_clean_entry_bitmap(uint64_t block_loc, int offset);
 
-    // Journaling
-    void prepare_journal_sector_write(int sector, blockstore_op_t *op);
-    void handle_journal_write(ring_data_t *data, uint64_t flush_id);
-
     // Asynchronous init
     int initialized;
     int metadata_buf_size;
@@ -325,18 +309,21 @@ class blockstore_impl_t
 
     // Sync
     int continue_sync(blockstore_op_t *op, bool queue_has_in_progress_sync);
+    void handle_sync_event(ring_data_t *data, blockstore_op_t *op);
     void ack_sync(blockstore_op_t *op);
 
     // Stabilize
     int dequeue_stable(blockstore_op_t *op);
     int continue_stable(blockstore_op_t *op);
     void mark_stable(const obj_ver_id & ov, bool forget_dirty = false);
+    void handle_stable_event(ring_data_t *data, blockstore_op_t *op);
     void stabilize_object(object_id oid, uint64_t max_ver);
 
     // Rollback
     int dequeue_rollback(blockstore_op_t *op);
     int continue_rollback(blockstore_op_t *op);
     void mark_rolled_back(const obj_ver_id & ov);
+    void handle_rollback_event(ring_data_t *data, blockstore_op_t *op);
     void erase_dirty(blockstore_dirty_db_t::iterator dirty_start, blockstore_dirty_db_t::iterator dirty_end, uint64_t clean_loc);
 
     // List

src/blockstore_init.cpp

@@ -148,7 +148,7 @@ resume_1:
         {
             GET_SQE();
             data->iov = {
-                (uint8_t*)metadata_buffer + (bs->inmemory_meta
+                metadata_buffer + (bs->inmemory_meta
                     ? metadata_read
                     : (prev == 1 ? bs->metadata_buf_size : 0)),
                 bs->meta_len - metadata_read > bs->metadata_buf_size ? bs->metadata_buf_size : bs->meta_len - metadata_read,
@@ -169,13 +169,13 @@ resume_1:
         if (prev_done)
         {
             void *done_buf = bs->inmemory_meta
-                ? ((uint8_t*)metadata_buffer + done_pos)
-                : ((uint8_t*)metadata_buffer + (prev_done == 2 ? bs->metadata_buf_size : 0));
+                ? (metadata_buffer + done_pos)
+                : (metadata_buffer + (prev_done == 2 ? bs->metadata_buf_size : 0));
             unsigned count = bs->meta_block_size / bs->clean_entry_size;
             for (int sector = 0; sector < done_len; sector += bs->meta_block_size)
             {
                 // handle <count> entries
-                handle_entries((uint8_t*)done_buf + sector, count, bs->block_order);
+                handle_entries(done_buf + sector, count, bs->block_order);
                 done_cnt += count;
             }
             prev_done = 0;
@@ -215,7 +215,7 @@ void blockstore_init_meta::handle_entries(void* entries, unsigned count, int blo
 {
     for (unsigned i = 0; i < count; i++)
     {
-        clean_disk_entry *entry = (clean_disk_entry*)((uint8_t*)entries + i*bs->clean_entry_size);
+        clean_disk_entry *entry = (clean_disk_entry*)(entries + i*bs->clean_entry_size);
         if (!bs->inmemory_meta && bs->clean_entry_bitmap_size)
         {
             memcpy(bs->clean_bitmap + (done_cnt+i)*2*bs->clean_entry_bitmap_size, &entry->bitmap, 2*bs->clean_entry_bitmap_size);
@@ -440,7 +440,7 @@ resume_1:
                 if (!bs->journal.inmemory)
                     submitted_buf = memalign_or_die(MEM_ALIGNMENT, JOURNAL_BUFFER_SIZE);
                 else
-                    submitted_buf = (uint8_t*)bs->journal.buffer + journal_pos;
+                    submitted_buf = bs->journal.buffer + journal_pos;
                 data->iov = {
                     submitted_buf,
                     end - journal_pos < JOURNAL_BUFFER_SIZE ? end - journal_pos : JOURNAL_BUFFER_SIZE,
@@ -570,7 +570,7 @@ int blockstore_init_journal::handle_journal_part(void *buf, uint64_t done_pos, u
     resume:
         while (pos < bs->journal.block_size)
         {
-            journal_entry *je = (journal_entry*)((uint8_t*)buf + proc_pos - done_pos + pos);
+            journal_entry *je = (journal_entry*)(buf + proc_pos - done_pos + pos);
             if (je->magic != JOURNAL_MAGIC || je_crc32(je) != je->crc32 ||
                 je->type < JE_MIN || je->type > JE_MAX || started && je->crc32_prev != crc32_last)
             {
@@ -619,7 +619,7 @@ int blockstore_init_journal::handle_journal_part(void *buf, uint64_t done_pos, u
                 if (location >= done_pos && location+je->small_write.len <= done_pos+len)
                 {
                     // data is within this buffer
-                    data_crc32 = crc32c(0, (uint8_t*)buf + location - done_pos, je->small_write.len);
+                    data_crc32 = crc32c(0, buf + location - done_pos, je->small_write.len);
                 }
                 else
                 {
@@ -634,7 +634,7 @@ int blockstore_init_journal::handle_journal_part(void *buf, uint64_t done_pos, u
                                 ? location+je->small_write.len : done[i].pos+done[i].len);
                             uint64_t part_begin = (location < done[i].pos ? done[i].pos : location);
                             covered += part_end - part_begin;
-                            data_crc32 = crc32c(data_crc32, (uint8_t*)done[i].buf + part_begin - done[i].pos, part_end - part_begin);
+                            data_crc32 = crc32c(data_crc32, done[i].buf + part_begin - done[i].pos, part_end - part_begin);
                         }
                     }
                     if (covered < je->small_write.len)
@@ -650,9 +650,9 @@ int blockstore_init_journal::handle_journal_part(void *buf, uint64_t done_pos, u
                     // interesting thing is that we must clear the corrupt entry if we're not readonly,
                     // because we don't write next entries in the same journal block
                     printf("Journal entry data is corrupt (data crc32 %x != %x)\n", data_crc32, je->small_write.crc32_data);
-                    memset((uint8_t*)buf + proc_pos - done_pos + pos, 0, bs->journal.block_size - pos);
+                    memset(buf + proc_pos - done_pos + pos, 0, bs->journal.block_size - pos);
                     bs->journal.next_free = prev_free;
-                    init_write_buf = (uint8_t*)buf + proc_pos - done_pos;
+                    init_write_buf = buf + proc_pos - done_pos;
                     init_write_sector = proc_pos;
                     return 0;
                 }
@@ -665,7 +665,7 @@ int blockstore_init_journal::handle_journal_part(void *buf, uint64_t done_pos, u
                         .version = je->small_write.version,
                     };
                     void *bmp = NULL;
-                    void *bmp_from = (uint8_t*)je + sizeof(journal_entry_small_write);
+                    void *bmp_from = (void*)je + sizeof(journal_entry_small_write);
                     if (bs->clean_entry_bitmap_size <= sizeof(void*))
                     {
                         memcpy(&bmp, bmp_from, bs->clean_entry_bitmap_size);
@@ -745,7 +745,7 @@ int blockstore_init_journal::handle_journal_part(void *buf, uint64_t done_pos, u
                         .version = je->big_write.version,
                     };
                     void *bmp = NULL;
-                    void *bmp_from = (uint8_t*)je + sizeof(journal_entry_big_write);
+                    void *bmp_from = (void*)je + sizeof(journal_entry_big_write);
                     if (bs->clean_entry_bitmap_size <= sizeof(void*))
                     {
                         memcpy(&bmp, bmp_from, bs->clean_entry_bitmap_size);

src/blockstore_init.h

@@ -6,7 +6,7 @@
 class blockstore_init_meta
 {
     blockstore_impl_t *bs;
-    int wait_state = 0;
+    int wait_state = 0, wait_count = 0;
     bool zero_on_init = false;
     void *metadata_buffer = NULL;
     uint64_t metadata_read = 0;

src/blockstore_journal.cpp

@@ -96,8 +96,7 @@ int blockstore_journal_check_t::check_available(blockstore_op_t *op, int entries
         next_pos = next_pos + data_after;
         if (next_pos > bs->journal.len)
         {
-            if (right_dir)
-                next_pos = bs->journal.block_size + data_after;
+            next_pos = bs->journal.block_size + data_after;
             right_dir = false;
         }
     }
@@ -137,13 +136,13 @@ journal_entry* prefill_single_journal_entry(journal_t & journal, uint16_t type,
         journal.in_sector_pos = 0;
         journal.next_free = (journal.next_free+journal.block_size) < journal.len ? journal.next_free + journal.block_size : journal.block_size;
         memset(journal.inmemory
-            ? (uint8_t*)journal.buffer + journal.sector_info[journal.cur_sector].offset
-            : (uint8_t*)journal.sector_buf + journal.block_size*journal.cur_sector, 0, journal.block_size);
+            ? journal.buffer + journal.sector_info[journal.cur_sector].offset
+            : journal.sector_buf + journal.block_size*journal.cur_sector, 0, journal.block_size);
     }
     journal_entry *je = (struct journal_entry*)(
         (journal.inmemory
-            ? (uint8_t*)journal.buffer + journal.sector_info[journal.cur_sector].offset
-            : (uint8_t*)journal.sector_buf + journal.block_size*journal.cur_sector) + journal.in_sector_pos
+            ? journal.buffer + journal.sector_info[journal.cur_sector].offset
+            : journal.sector_buf + journal.block_size*journal.cur_sector) + journal.in_sector_pos
     );
     journal.in_sector_pos += size;
     je->magic = JOURNAL_MAGIC;
@@ -154,73 +153,22 @@ journal_entry* prefill_single_journal_entry(journal_t & journal, uint16_t type,
     return je;
 }
 
-void blockstore_impl_t::prepare_journal_sector_write(int cur_sector, blockstore_op_t *op)
+void prepare_journal_sector_write(journal_t & journal, int cur_sector, io_uring_sqe *sqe, std::function<void(ring_data_t*)> cb)
 {
-    // Don't submit the same sector twice in the same batch
-    if (!journal.sector_info[cur_sector].submit_id)
-    {
-        io_uring_sqe *sqe = get_sqe();
-        // Caller must ensure availability of an SQE
-        assert(sqe != NULL);
-        ring_data_t *data = ((ring_data_t*)sqe->user_data);
-        journal.sector_info[cur_sector].written = true;
-        journal.sector_info[cur_sector].submit_id = ++journal.submit_id;
-        journal.submitting_sectors.push_back(cur_sector);
-        journal.sector_info[cur_sector].flush_count++;
-        data->iov = (struct iovec){
-            (journal.inmemory
-                ? (uint8_t*)journal.buffer + journal.sector_info[cur_sector].offset
-                : (uint8_t*)journal.sector_buf + journal.block_size*cur_sector),
-            journal.block_size
-        };
-        data->callback = [this, flush_id = journal.submit_id](ring_data_t *data) { handle_journal_write(data, flush_id); };
-        my_uring_prep_writev(
-            sqe, journal.fd, &data->iov, 1, journal.offset + journal.sector_info[cur_sector].offset
-        );
-    }
     journal.sector_info[cur_sector].dirty = false;
-    // But always remember that this operation has to wait until this exact journal write is finished
-    journal.flushing_ops.insert((pending_journaling_t){
-        .flush_id = journal.sector_info[cur_sector].submit_id,
-        .sector = cur_sector,
-        .op = op,
-    });
-    auto priv = PRIV(op);
-    priv->pending_ops++;
-    if (!priv->min_flushed_journal_sector)
-        priv->min_flushed_journal_sector = 1+cur_sector;
-    priv->max_flushed_journal_sector = 1+cur_sector;
-}
-
-void blockstore_impl_t::handle_journal_write(ring_data_t *data, uint64_t flush_id)
-{
-    live = true;
-    if (data->res != data->iov.iov_len)
-    {
-        // FIXME: our state becomes corrupted after a write error. maybe do something better than just die
-        throw std::runtime_error(
-            "journal write failed ("+std::to_string(data->res)+" != "+std::to_string(data->iov.iov_len)+
-            "). in-memory state is corrupted. AAAAAAAaaaaaaaaa!!!111"
-        );
-    }
-    auto fl_it = journal.flushing_ops.upper_bound((pending_journaling_t){ .flush_id = flush_id });
-    if (fl_it != journal.flushing_ops.end() && fl_it->flush_id == flush_id)
-    {
-        journal.sector_info[fl_it->sector].flush_count--;
-    }
-    while (fl_it != journal.flushing_ops.end() && fl_it->flush_id == flush_id)
-    {
-        auto priv = PRIV(fl_it->op);
-        priv->pending_ops--;
-        assert(priv->pending_ops >= 0);
-        if (priv->pending_ops == 0)
-        {
-            release_journal_sectors(fl_it->op);
-            priv->op_state++;
-            ringloop->wakeup();
-        }
-        journal.flushing_ops.erase(fl_it++);
-    }
+    journal.sector_info[cur_sector].written = true;
+    journal.sector_info[cur_sector].flush_count++;
+    ring_data_t *data = ((ring_data_t*)sqe->user_data);
+    data->iov = (struct iovec){
+        (journal.inmemory
+            ? journal.buffer + journal.sector_info[cur_sector].offset
+            : journal.sector_buf + journal.block_size*cur_sector),
+        journal.block_size
+    };
+    data->callback = cb;
+    my_uring_prep_writev(
+        sqe, journal.fd, &data->iov, 1, journal.offset + journal.sector_info[cur_sector].offset
+    );
 }
 
 journal_t::~journal_t()

src/blockstore_journal.h

@@ -4,7 +4,6 @@
 #pragma once
 
 #include "crc32c.h"
-#include <set>
 
 #define MIN_JOURNAL_SIZE 4*1024*1024
 #define JOURNAL_MAGIC 0x4A33
@@ -146,21 +145,8 @@ struct journal_sector_info_t
     uint64_t flush_count;
     bool written;
     bool dirty;
-    uint64_t submit_id;
 };
 
-struct pending_journaling_t
-{
-    uint64_t flush_id;
-    int sector;
-    blockstore_op_t *op;
-};
-
-inline bool operator < (const pending_journaling_t & a, const pending_journaling_t & b)
-{
-    return a.flush_id < b.flush_id || a.flush_id == b.flush_id && a.op < b.op;
-}
-
 struct journal_t
 {
     int fd;
@@ -186,9 +172,6 @@ struct journal_t
     bool no_same_sector_overwrites = false;
     int cur_sector = 0;
     int in_sector_pos = 0;
-    std::vector<int> submitting_sectors;
-    std::set<pending_journaling_t> flushing_ops;
-    uint64_t submit_id = 0;
 
     // Used sector map
     // May use ~ 80 MB per 1 GB of used journal space in the worst case
@@ -217,3 +200,5 @@ struct blockstore_journal_check_t
 };
 
 journal_entry* prefill_single_journal_entry(journal_t & journal, uint16_t type, uint32_t size);
+
+void prepare_journal_sector_write(journal_t & journal, int sector, io_uring_sqe *sqe, std::function<void(ring_data_t*)> cb);

src/blockstore_open.cpp

@@ -295,9 +295,9 @@ void blockstore_impl_t::calc_lengths()
     }
 }
 
-static void check_size(int fd, uint64_t *size, uint64_t *sectsize, std::string name)
+void check_size(int fd, uint64_t *size, std::string name)
 {
-    int sect;
+    int sectsize;
     struct stat st;
     if (fstat(fd, &st) < 0)
     {
@@ -306,21 +306,14 @@ static void check_size(int fd, uint64_t *size, uint64_t *sectsize, std::string n
     if (S_ISREG(st.st_mode))
     {
         *size = st.st_size;
-        if (sectsize)
-        {
-            *sectsize = st.st_blksize;
-        }
     }
     else if (S_ISBLK(st.st_mode))
     {
-        if (ioctl(fd, BLKGETSIZE64, size) < 0 ||
-            ioctl(fd, BLKSSZGET, &sect) < 0)
+        if (ioctl(fd, BLKSSZGET, &sectsize) < 0 ||
+            ioctl(fd, BLKGETSIZE64, size) < 0 ||
+            sectsize != 512)
         {
-            throw std::runtime_error("failed to get "+name+" size or block size: "+strerror(errno));
-        }
-        if (sectsize)
-        {
-            *sectsize = sect;
+            throw std::runtime_error(name+" sector is not equal to 512 bytes");
         }
     }
     else
@@ -336,14 +329,7 @@ void blockstore_impl_t::open_data()
     {
         throw std::runtime_error("Failed to open data device");
     }
-    check_size(data_fd, &data_size, &data_device_sect, "data device");
-    if (disk_alignment % data_device_sect)
-    {
-        throw std::runtime_error(
-            "disk_alignment ("+std::to_string(disk_alignment)+
-            ") is not a multiple of data device sector size ("+std::to_string(data_device_sect)+")"
-        );
-    }
+    check_size(data_fd, &data_size, "data device");
     if (data_offset >= data_size)
     {
         throw std::runtime_error("data_offset exceeds device size = "+std::to_string(data_size));
@@ -364,7 +350,7 @@ void blockstore_impl_t::open_meta()
         {
             throw std::runtime_error("Failed to open metadata device");
         }
-        check_size(meta_fd, &meta_size, &meta_device_sect, "metadata device");
+        check_size(meta_fd, &meta_size, "metadata device");
         if (meta_offset >= meta_size)
         {
             throw std::runtime_error("meta_offset exceeds device size = "+std::to_string(meta_size));
@@ -377,20 +363,12 @@ void blockstore_impl_t::open_meta()
     else
     {
         meta_fd = data_fd;
-        meta_device_sect = data_device_sect;
         meta_size = 0;
         if (meta_offset >= data_size)
         {
             throw std::runtime_error("meta_offset exceeds device size = "+std::to_string(data_size));
         }
     }
-    if (meta_block_size % meta_device_sect)
-    {
-        throw std::runtime_error(
-            "meta_block_size ("+std::to_string(meta_block_size)+
-            ") is not a multiple of data device sector size ("+std::to_string(meta_device_sect)+")"
-        );
-    }
 }
 
 void blockstore_impl_t::open_journal()
@@ -402,7 +380,7 @@ void blockstore_impl_t::open_journal()
         {
             throw std::runtime_error("Failed to open journal device");
         }
-        check_size(journal.fd, &journal.device_size, &journal_device_sect, "journal device");
+        check_size(journal.fd, &journal.device_size, "journal device");
         if (!disable_flock && flock(journal.fd, LOCK_EX|LOCK_NB) != 0)
         {
             throw std::runtime_error(std::string("Failed to lock journal device: ") + strerror(errno));
@@ -411,7 +389,6 @@ void blockstore_impl_t::open_journal()
     else
     {
         journal.fd = meta_fd;
-        journal_device_sect = meta_device_sect;
         journal.device_size = 0;
         if (journal.offset >= data_size)
         {
@@ -429,11 +406,4 @@ void blockstore_impl_t::open_journal()
         if (!journal.sector_buf)
             throw std::bad_alloc();
     }
-    if (journal_block_size % journal_device_sect)
-    {
-        throw std::runtime_error(
-            "journal_block_size ("+std::to_string(journal_block_size)+
-            ") is not a multiple of journal device sector size ("+std::to_string(journal_device_sect)+")"
-        );
-    }
 }

src/blockstore_read.cpp

@@ -24,7 +24,7 @@ int blockstore_impl_t::fulfill_read_push(blockstore_op_t *op, void *buf, uint64_
     }
     if (journal.inmemory && IS_JOURNAL(item_state))
     {
-        memcpy(buf, (uint8_t*)journal.buffer + offset, len);
+        memcpy(buf, journal.buffer + offset, len);
         return 1;
     }
     BS_SUBMIT_GET_SQE(sqe, data);
@@ -75,7 +75,7 @@ int blockstore_impl_t::fulfill_read(blockstore_op_t *read_op, uint64_t &fulfille
                 };
                 it = PRIV(read_op)->read_vec.insert(it, el);
                 if (!fulfill_read_push(read_op,
-                    (uint8_t*)read_op->buf + el.offset - read_op->offset,
+                    read_op->buf + el.offset - read_op->offset,
                     item_location + el.offset - item_start,
                     el.len, item_state, item_version))
                 {
@@ -102,7 +102,7 @@ uint8_t* blockstore_impl_t::get_clean_entry_bitmap(uint64_t block_loc, int offse
     {
         uint64_t sector = (meta_loc / (meta_block_size / clean_entry_size)) * meta_block_size;
         uint64_t pos = (meta_loc % (meta_block_size / clean_entry_size));
-        clean_entry_bitmap = ((uint8_t*)metadata_buffer + sector + pos*clean_entry_size + sizeof(clean_disk_entry) + offset);
+        clean_entry_bitmap = (uint8_t*)(metadata_buffer + sector + pos*clean_entry_size + sizeof(clean_disk_entry) + offset);
     }
     else
         clean_entry_bitmap = (uint8_t*)(clean_bitmap + meta_loc*2*clean_entry_bitmap_size + offset);

src/blockstore_rollback.cpp

@@ -74,17 +74,24 @@ skip_ov:
     {
         return 0;
     }
-    // There is sufficient space. Check SQEs
-    BS_SUBMIT_CHECK_SQES(space_check.sectors_to_write);
+    // There is sufficient space. Get SQEs
+    struct io_uring_sqe *sqe[space_check.sectors_to_write];
+    for (i = 0; i < space_check.sectors_to_write; i++)
+    {
+        BS_SUBMIT_GET_SQE_DECL(sqe[i]);
+    }
     // Prepare and submit journal entries
-    int s = 0;
+    auto cb = [this, op](ring_data_t *data) { handle_rollback_event(data, op); };
+    int s = 0, cur_sector = -1;
     for (i = 0, v = (obj_ver_id*)op->buf; i < op->len; i++, v++)
     {
         if (!journal.entry_fits(sizeof(journal_entry_rollback)) &&
             journal.sector_info[journal.cur_sector].dirty)
         {
-            prepare_journal_sector_write(journal.cur_sector, op);
-            s++;
+            if (cur_sector == -1)
+                PRIV(op)->min_flushed_journal_sector = 1 + journal.cur_sector;
+            prepare_journal_sector_write(journal, journal.cur_sector, sqe[s++], cb);
+            cur_sector = journal.cur_sector;
         }
         journal_entry_rollback *je = (journal_entry_rollback*)
             prefill_single_journal_entry(journal, JE_ROLLBACK, sizeof(journal_entry_rollback));
@@ -93,9 +100,12 @@ skip_ov:
         je->crc32 = je_crc32((journal_entry*)je);
         journal.crc32_last = je->crc32;
     }
-    prepare_journal_sector_write(journal.cur_sector, op);
-    s++;
+    prepare_journal_sector_write(journal, journal.cur_sector, sqe[s++], cb);
     assert(s == space_check.sectors_to_write);
+    if (cur_sector == -1)
+        PRIV(op)->min_flushed_journal_sector = 1 + journal.cur_sector;
+    PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+    PRIV(op)->pending_ops = s;
     PRIV(op)->op_state = 1;
     return 1;
 }
@@ -104,23 +114,30 @@ int blockstore_impl_t::continue_rollback(blockstore_op_t *op)
 {
     if (PRIV(op)->op_state == 2)
         goto resume_2;
-    else if (PRIV(op)->op_state == 4)
-        goto resume_4;
+    else if (PRIV(op)->op_state == 3)
+        goto resume_3;
+    else if (PRIV(op)->op_state == 5)
+        goto resume_5;
     else
         return 1;
 resume_2:
+    // Release used journal sectors
+    release_journal_sectors(op);
+resume_3:
     if (!disable_journal_fsync)
     {
-        BS_SUBMIT_GET_SQE(sqe, data);
+        io_uring_sqe *sqe;
+        BS_SUBMIT_GET_SQE_DECL(sqe);
+        ring_data_t *data = ((ring_data_t*)sqe->user_data);
         my_uring_prep_fsync(sqe, journal.fd, IORING_FSYNC_DATASYNC);
         data->iov = { 0 };
-        data->callback = [this, op](ring_data_t *data) { handle_write_event(data, op); };
+        data->callback = [this, op](ring_data_t *data) { handle_rollback_event(data, op); };
         PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 0;
         PRIV(op)->pending_ops = 1;
-        PRIV(op)->op_state = 3;
+        PRIV(op)->op_state = 4;
         return 1;
     }
-resume_4:
+resume_5:
     obj_ver_id* v;
     int i;
     for (i = 0, v = (obj_ver_id*)op->buf; i < op->len; i++, v++)
@@ -179,6 +196,24 @@ void blockstore_impl_t::mark_rolled_back(const obj_ver_id & ov)
     }
 }
 
+void blockstore_impl_t::handle_rollback_event(ring_data_t *data, blockstore_op_t *op)
+{
+    live = true;
+    if (data->res != data->iov.iov_len)
+    {
+        throw std::runtime_error(
+            "write operation failed ("+std::to_string(data->res)+" != "+std::to_string(data->iov.iov_len)+
+            "). in-memory state is corrupted. AAAAAAAaaaaaaaaa!!!111"
+        );
+    }
+    PRIV(op)->pending_ops--;
+    if (PRIV(op)->pending_ops == 0)
+    {
+        PRIV(op)->op_state++;
+        ringloop->wakeup();
+    }
+}
+
 void blockstore_impl_t::erase_dirty(blockstore_dirty_db_t::iterator dirty_start, blockstore_dirty_db_t::iterator dirty_end, uint64_t clean_loc)
 {
     if (dirty_end == dirty_start)

src/blockstore_stable.cpp

@@ -97,18 +97,25 @@ int blockstore_impl_t::dequeue_stable(blockstore_op_t *op)
     {
         return 0;
     }
-    // There is sufficient space. Check SQEs
-    BS_SUBMIT_CHECK_SQES(space_check.sectors_to_write);
+    // There is sufficient space. Get SQEs
+    struct io_uring_sqe *sqe[space_check.sectors_to_write];
+    for (i = 0; i < space_check.sectors_to_write; i++)
+    {
+        BS_SUBMIT_GET_SQE_DECL(sqe[i]);
+    }
     // Prepare and submit journal entries
-    int s = 0;
+    auto cb = [this, op](ring_data_t *data) { handle_stable_event(data, op); };
+    int s = 0, cur_sector = -1;
     for (i = 0, v = (obj_ver_id*)op->buf; i < op->len; i++, v++)
     {
         // FIXME: Only stabilize versions that aren't stable yet
         if (!journal.entry_fits(sizeof(journal_entry_stable)) &&
             journal.sector_info[journal.cur_sector].dirty)
         {
-            prepare_journal_sector_write(journal.cur_sector, op);
-            s++;
+            if (cur_sector == -1)
+                PRIV(op)->min_flushed_journal_sector = 1 + journal.cur_sector;
+            prepare_journal_sector_write(journal, journal.cur_sector, sqe[s++], cb);
+            cur_sector = journal.cur_sector;
         }
         journal_entry_stable *je = (journal_entry_stable*)
             prefill_single_journal_entry(journal, JE_STABLE, sizeof(journal_entry_stable));
@@ -117,9 +124,12 @@ int blockstore_impl_t::dequeue_stable(blockstore_op_t *op)
         je->crc32 = je_crc32((journal_entry*)je);
         journal.crc32_last = je->crc32;
     }
-    prepare_journal_sector_write(journal.cur_sector, op);
-    s++;
+    prepare_journal_sector_write(journal, journal.cur_sector, sqe[s++], cb);
     assert(s == space_check.sectors_to_write);
+    if (cur_sector == -1)
+        PRIV(op)->min_flushed_journal_sector = 1 + journal.cur_sector;
+    PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+    PRIV(op)->pending_ops = s;
     PRIV(op)->op_state = 1;
     return 1;
 }
@@ -128,23 +138,30 @@ int blockstore_impl_t::continue_stable(blockstore_op_t *op)
 {
     if (PRIV(op)->op_state == 2)
         goto resume_2;
-    else if (PRIV(op)->op_state == 4)
-        goto resume_4;
+    else if (PRIV(op)->op_state == 3)
+        goto resume_3;
+    else if (PRIV(op)->op_state == 5)
+        goto resume_5;
     else
         return 1;
 resume_2:
+    // Release used journal sectors
+    release_journal_sectors(op);
+resume_3:
     if (!disable_journal_fsync)
     {
-        BS_SUBMIT_GET_SQE(sqe, data);
+        io_uring_sqe *sqe;
+        BS_SUBMIT_GET_SQE_DECL(sqe);
+        ring_data_t *data = ((ring_data_t*)sqe->user_data);
         my_uring_prep_fsync(sqe, journal.fd, IORING_FSYNC_DATASYNC);
         data->iov = { 0 };
-        data->callback = [this, op](ring_data_t *data) { handle_write_event(data, op); };
+        data->callback = [this, op](ring_data_t *data) { handle_stable_event(data, op); };
         PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 0;
         PRIV(op)->pending_ops = 1;
-        PRIV(op)->op_state = 3;
+        PRIV(op)->op_state = 4;
         return 1;
     }
-resume_4:
+resume_5:
     // Mark dirty_db entries as stable, acknowledge op completion
     obj_ver_id* v;
     int i;
@@ -240,3 +257,21 @@ void blockstore_impl_t::mark_stable(const obj_ver_id & v, bool forget_dirty)
         unstable_writes.erase(unstab_it);
     }
 }
+
+void blockstore_impl_t::handle_stable_event(ring_data_t *data, blockstore_op_t *op)
+{
+    live = true;
+    if (data->res != data->iov.iov_len)
+    {
+        throw std::runtime_error(
+            "write operation failed ("+std::to_string(data->res)+" != "+std::to_string(data->iov.iov_len)+
+            "). in-memory state is corrupted. AAAAAAAaaaaaaaaa!!!111"
+        );
+    }
+    PRIV(op)->pending_ops--;
+    if (PRIV(op)->pending_ops == 0)
+    {
+        PRIV(op)->op_state++;
+        ringloop->wakeup();
+    }
+}

src/blockstore_sync.cpp

@@ -44,8 +44,10 @@ int blockstore_impl_t::continue_sync(blockstore_op_t *op, bool queue_has_in_prog
         if (journal.sector_info[journal.cur_sector].dirty)
         {
             // Write out the last journal sector if it happens to be dirty
-            BS_SUBMIT_CHECK_SQES(1);
-            prepare_journal_sector_write(journal.cur_sector, op);
+            BS_SUBMIT_GET_ONLY_SQE(sqe);
+            prepare_journal_sector_write(journal, journal.cur_sector, sqe, [this, op](ring_data_t *data) { handle_sync_event(data, op); });
+            PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+            PRIV(op)->pending_ops = 1;
             PRIV(op)->op_state = SYNC_JOURNAL_WRITE_SENT;
             return 1;
         }
@@ -62,7 +64,7 @@ int blockstore_impl_t::continue_sync(blockstore_op_t *op, bool queue_has_in_prog
             BS_SUBMIT_GET_SQE(sqe, data);
             my_uring_prep_fsync(sqe, data_fd, IORING_FSYNC_DATASYNC);
             data->iov = { 0 };
-            data->callback = [this, op](ring_data_t *data) { handle_write_event(data, op); };
+            data->callback = [this, op](ring_data_t *data) { handle_sync_event(data, op); };
             PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 0;
             PRIV(op)->pending_ops = 1;
             PRIV(op)->op_state = SYNC_DATA_SYNC_SENT;
@@ -83,18 +85,24 @@ int blockstore_impl_t::continue_sync(blockstore_op_t *op, bool queue_has_in_prog
         {
             return 0;
         }
-        // Check SQEs. Don't bother about merging, submit each journal sector as a separate request
-        BS_SUBMIT_CHECK_SQES(space_check.sectors_to_write);
+        // Get SQEs. Don't bother about merging, submit each journal sector as a separate request
+        struct io_uring_sqe *sqe[space_check.sectors_to_write];
+        for (int i = 0; i < space_check.sectors_to_write; i++)
+        {
+            BS_SUBMIT_GET_SQE_DECL(sqe[i]);
+        }
         // Prepare and submit journal entries
         auto it = PRIV(op)->sync_big_writes.begin();
-        int s = 0;
+        int s = 0, cur_sector = -1;
         while (it != PRIV(op)->sync_big_writes.end())
         {
             if (!journal.entry_fits(sizeof(journal_entry_big_write) + clean_entry_bitmap_size) &&
                 journal.sector_info[journal.cur_sector].dirty)
             {
-                prepare_journal_sector_write(journal.cur_sector, op);
-                s++;
+                if (cur_sector == -1)
+                    PRIV(op)->min_flushed_journal_sector = 1 + journal.cur_sector;
+                prepare_journal_sector_write(journal, journal.cur_sector, sqe[s++], [this, op](ring_data_t *data) { handle_sync_event(data, op); });
+                cur_sector = journal.cur_sector;
             }
             auto & dirty_entry = dirty_db.at(*it);
             journal_entry_big_write *je = (journal_entry_big_write*)prefill_single_journal_entry(
@@ -121,9 +129,12 @@ int blockstore_impl_t::continue_sync(blockstore_op_t *op, bool queue_has_in_prog
             journal.crc32_last = je->crc32;
             it++;
         }
-        prepare_journal_sector_write(journal.cur_sector, op);
-        s++;
+        prepare_journal_sector_write(journal, journal.cur_sector, sqe[s++], [this, op](ring_data_t *data) { handle_sync_event(data, op); });
         assert(s == space_check.sectors_to_write);
+        if (cur_sector == -1)
+            PRIV(op)->min_flushed_journal_sector = 1 + journal.cur_sector;
+        PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+        PRIV(op)->pending_ops = s;
         PRIV(op)->op_state = SYNC_JOURNAL_WRITE_SENT;
         return 1;
     }
@@ -134,7 +145,7 @@ int blockstore_impl_t::continue_sync(blockstore_op_t *op, bool queue_has_in_prog
             BS_SUBMIT_GET_SQE(sqe, data);
             my_uring_prep_fsync(sqe, journal.fd, IORING_FSYNC_DATASYNC);
             data->iov = { 0 };
-            data->callback = [this, op](ring_data_t *data) { handle_write_event(data, op); };
+            data->callback = [this, op](ring_data_t *data) { handle_sync_event(data, op); };
             PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 0;
             PRIV(op)->pending_ops = 1;
             PRIV(op)->op_state = SYNC_JOURNAL_SYNC_SENT;
@@ -153,6 +164,42 @@ int blockstore_impl_t::continue_sync(blockstore_op_t *op, bool queue_has_in_prog
     return 1;
 }
 
+void blockstore_impl_t::handle_sync_event(ring_data_t *data, blockstore_op_t *op)
+{
+    live = true;
+    if (data->res != data->iov.iov_len)
+    {
+        throw std::runtime_error(
+            "write operation failed ("+std::to_string(data->res)+" != "+std::to_string(data->iov.iov_len)+
+            "). in-memory state is corrupted. AAAAAAAaaaaaaaaa!!!111"
+        );
+    }
+    PRIV(op)->pending_ops--;
+    if (PRIV(op)->pending_ops == 0)
+    {
+        // Release used journal sectors
+        release_journal_sectors(op);
+        // Handle states
+        if (PRIV(op)->op_state == SYNC_DATA_SYNC_SENT)
+        {
+            PRIV(op)->op_state = SYNC_DATA_SYNC_DONE;
+        }
+        else if (PRIV(op)->op_state == SYNC_JOURNAL_WRITE_SENT)
+        {
+            PRIV(op)->op_state = SYNC_JOURNAL_WRITE_DONE;
+        }
+        else if (PRIV(op)->op_state == SYNC_JOURNAL_SYNC_SENT)
+        {
+            PRIV(op)->op_state = SYNC_DONE;
+        }
+        else
+        {
+            throw std::runtime_error("BUG: unexpected sync op state");
+        }
+        ringloop->wakeup();
+    }
+}
+
 void blockstore_impl_t::ack_sync(blockstore_op_t *op)
 {
     // Handle states

src/blockstore_write.cpp

@@ -102,7 +102,7 @@ bool blockstore_impl_t::enqueue_write(blockstore_op_t *op)
         // Issue an additional sync so that the previous big write can reach the journal
         blockstore_op_t *sync_op = new blockstore_op_t;
         sync_op->opcode = BS_OP_SYNC;
-        sync_op->callback = [](blockstore_op_t *sync_op)
+        sync_op->callback = [this, op](blockstore_op_t *sync_op)
         {
             delete sync_op;
         };
@@ -268,8 +268,8 @@ int blockstore_impl_t::dequeue_write(blockstore_op_t *op)
             cancel_all_writes(op, dirty_it, -ENOSPC);
             return 2;
         }
-        BS_SUBMIT_GET_SQE(sqe, data);
         write_iodepth++;
+        BS_SUBMIT_GET_SQE(sqe, data);
         dirty_it->second.location = loc << block_order;
         dirty_it->second.state = (dirty_it->second.state & ~BS_ST_WORKFLOW_MASK) | BS_ST_SUBMITTED;
 #ifdef BLOCKSTORE_DEBUG
@@ -324,21 +324,29 @@ int blockstore_impl_t::dequeue_write(blockstore_op_t *op)
         {
             return 0;
         }
-        // There is sufficient space. Check SQE(s)
-        BS_SUBMIT_CHECK_SQES(
-            // Write current journal sector only if it's dirty and full, or in the immediate_commit mode
-            (immediate_commit != IMMEDIATE_NONE ||
-                !journal.entry_fits(sizeof(journal_entry_small_write) + clean_entry_bitmap_size) ? 1 : 0) +
-            (op->len > 0 ? 1 : 0)
-        );
         write_iodepth++;
+        // There is sufficient space. Get SQE(s)
+        struct io_uring_sqe *sqe1 = NULL;
+        if (immediate_commit != IMMEDIATE_NONE ||
+            !journal.entry_fits(sizeof(journal_entry_small_write) + clean_entry_bitmap_size))
+        {
+            // Write current journal sector only if it's dirty and full, or in the immediate_commit mode
+            BS_SUBMIT_GET_SQE_DECL(sqe1);
+        }
+        struct io_uring_sqe *sqe2 = NULL;
+        if (op->len > 0)
+        {
+            BS_SUBMIT_GET_SQE_DECL(sqe2);
+        }
         // Got SQEs. Prepare previous journal sector write if required
         auto cb = [this, op](ring_data_t *data) { handle_write_event(data, op); };
         if (immediate_commit == IMMEDIATE_NONE)
         {
-            if (!journal.entry_fits(sizeof(journal_entry_small_write) + clean_entry_bitmap_size))
+            if (sqe1)
             {
-                prepare_journal_sector_write(journal.cur_sector, op);
+                prepare_journal_sector_write(journal, journal.cur_sector, sqe1, cb);
+                PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+                PRIV(op)->pending_ops++;
             }
             else
             {
@@ -372,7 +380,9 @@ int blockstore_impl_t::dequeue_write(blockstore_op_t *op)
         journal.crc32_last = je->crc32;
         if (immediate_commit != IMMEDIATE_NONE)
         {
-            prepare_journal_sector_write(journal.cur_sector, op);
+            prepare_journal_sector_write(journal, journal.cur_sector, sqe1, cb);
+            PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+            PRIV(op)->pending_ops++;
         }
         if (op->len > 0)
         {
@@ -380,9 +390,9 @@ int blockstore_impl_t::dequeue_write(blockstore_op_t *op)
             if (journal.inmemory)
             {
                 // Copy data
-                memcpy((uint8_t*)journal.buffer + journal.next_free, op->buf, op->len);
+                memcpy(journal.buffer + journal.next_free, op->buf, op->len);
             }
-            BS_SUBMIT_GET_SQE(sqe2, data2);
+            ring_data_t *data2 = ((ring_data_t*)sqe2->user_data);
             data2->iov = (struct iovec){ op->buf, op->len };
             data2->callback = cb;
             my_uring_prep_writev(
@@ -431,12 +441,13 @@ int blockstore_impl_t::continue_write(blockstore_op_t *op)
 resume_2:
     // Only for the immediate_commit mode: prepare and submit big_write journal entry
     {
-        BS_SUBMIT_CHECK_SQES(1);
         auto dirty_it = dirty_db.find((obj_ver_id){
             .oid = op->oid,
             .version = op->version,
         });
         assert(dirty_it != dirty_db.end());
+        io_uring_sqe *sqe = NULL;
+        BS_SUBMIT_GET_SQE_DECL(sqe);
         journal_entry_big_write *je = (journal_entry_big_write*)prefill_single_journal_entry(
             journal, op->opcode == BS_OP_WRITE_STABLE ? JE_BIG_WRITE_INSTANT : JE_BIG_WRITE,
             sizeof(journal_entry_big_write) + clean_entry_bitmap_size
@@ -458,7 +469,10 @@ resume_2:
         memcpy((void*)(je+1), (clean_entry_bitmap_size > sizeof(void*) ? dirty_it->second.bitmap : &dirty_it->second.bitmap), clean_entry_bitmap_size);
         je->crc32 = je_crc32((journal_entry*)je);
         journal.crc32_last = je->crc32;
-        prepare_journal_sector_write(journal.cur_sector, op);
+        prepare_journal_sector_write(journal, journal.cur_sector, sqe,
+            [this, op](ring_data_t *data) { handle_write_event(data, op); });
+        PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+        PRIV(op)->pending_ops = 1;
         PRIV(op)->op_state = 3;
         return 1;
     }
@@ -573,7 +587,6 @@ void blockstore_impl_t::handle_write_event(ring_data_t *data, blockstore_op_t *o
         );
     }
     PRIV(op)->pending_ops--;
-    assert(PRIV(op)->pending_ops >= 0);
     if (PRIV(op)->pending_ops == 0)
     {
         release_journal_sectors(op);
@@ -591,6 +604,7 @@ void blockstore_impl_t::release_journal_sectors(blockstore_op_t *op)
         uint64_t s = PRIV(op)->min_flushed_journal_sector;
         while (1)
         {
+            journal.sector_info[s-1].flush_count--;
             if (s != (1+journal.cur_sector) && journal.sector_info[s-1].flush_count == 0)
             {
                 // We know for sure that we won't write into this sector anymore
@@ -629,24 +643,24 @@ int blockstore_impl_t::dequeue_del(blockstore_op_t *op)
     {
         return 0;
     }
-    // Write current journal sector only if it's dirty and full, or in the immediate_commit mode
-    BS_SUBMIT_CHECK_SQES(
-        (immediate_commit != IMMEDIATE_NONE ||
-            (journal_block_size - journal.in_sector_pos) < sizeof(journal_entry_del) &&
-            journal.sector_info[journal.cur_sector].dirty) ? 1 : 0
-    );
-    if (write_iodepth >= max_write_iodepth)
-    {
-        return 0;
-    }
     write_iodepth++;
+    io_uring_sqe *sqe = NULL;
+    if (immediate_commit != IMMEDIATE_NONE ||
+        (journal_block_size - journal.in_sector_pos) < sizeof(journal_entry_del) &&
+        journal.sector_info[journal.cur_sector].dirty)
+    {
+        // Write current journal sector only if it's dirty and full, or in the immediate_commit mode
+        BS_SUBMIT_GET_SQE_DECL(sqe);
+    }
+    auto cb = [this, op](ring_data_t *data) { handle_write_event(data, op); };
     // Prepare journal sector write
     if (immediate_commit == IMMEDIATE_NONE)
     {
-        if ((journal_block_size - journal.in_sector_pos) < sizeof(journal_entry_del) &&
-            journal.sector_info[journal.cur_sector].dirty)
+        if (sqe)
         {
-            prepare_journal_sector_write(journal.cur_sector, op);
+            prepare_journal_sector_write(journal, journal.cur_sector, sqe, cb);
+            PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+            PRIV(op)->pending_ops++;
         }
         else
         {
@@ -673,7 +687,9 @@ int blockstore_impl_t::dequeue_del(blockstore_op_t *op)
     dirty_it->second.state = BS_ST_DELETE | BS_ST_SUBMITTED;
     if (immediate_commit != IMMEDIATE_NONE)
     {
-        prepare_journal_sector_write(journal.cur_sector, op);
+        prepare_journal_sector_write(journal, journal.cur_sector, sqe, cb);
+        PRIV(op)->min_flushed_journal_sector = PRIV(op)->max_flushed_journal_sector = 1 + journal.cur_sector;
+        PRIV(op)->pending_ops++;
     }
     if (!PRIV(op)->pending_ops)
     {

src/cli.cpp

@@ -57,7 +57,6 @@ json11::Json::object cli_tool_t::parse_args(int narg, const char *args[])
             const char *opt = args[i]+2;
             cfg[opt] = i == narg-1 || !strcmp(opt, "json") || !strcmp(opt, "wait-list") ||
                 !strcmp(opt, "long") || !strcmp(opt, "del") || !strcmp(opt, "no-color") ||
-                !strcmp(opt, "readonly") || !strcmp(opt, "readwrite") ||
                 !strcmp(opt, "force") || !strcmp(opt, "reverse") ||
                 !strcmp(opt, "writers-stopped") && strcmp("1", args[i+1]) != 0
                 ? "1" : args[++i];
@@ -70,7 +69,7 @@ json11::Json::object cli_tool_t::parse_args(int narg, const char *args[])
     if (!cmd.size())
     {
         std::string exe(exe_name);
-        if (exe.size() >= 11 && exe.substr(exe.size()-11) == "vitastor-rm")
+        if (exe.substr(exe.size()-11) == "vitastor-rm")
         {
             cmd.push_back("rm-data");
         }
@@ -86,11 +85,8 @@ void cli_tool_t::help()
         "(c) Vitaliy Filippov, 2019+ (VNPL-1.1)\n"
         "\n"
         "USAGE:\n"
-        "%s df\n"
-        "  Show pool space statistics\n"
-        "\n"
-        "%s ls [-l] [-p POOL] [--sort FIELD] [-r] [-n N] [<glob> ...]\n"
-        "  List images (only matching <glob> patterns if passed).\n"
+        "%s ls [-l] [-p POOL] [--sort FIELD] [-r] [-n N] [<name> ...]\n"
+        "  List images (only specified if <name> passed).\n"
         "  -p|--pool POOL  Filter images by pool ID or name\n"
         "  -l|--long       Also report allocated size and I/O statistics\n"
         "  --del           Also include delete operation statistics\n"
@@ -107,8 +103,8 @@ void cli_tool_t::help()
         "%s snap-create [-p|--pool <id|name>] <image>@<snapshot>\n"
         "  Create a snapshot of image <name>. May be used live if only a single writer is active.\n"
         "\n"
-        "%s modify <name> [--rename <new-name>] [--resize <size>] [--readonly | --readwrite] [-f|--force]\n"
-        "  Rename, resize image or change its readonly status. Images with children can't be made read-write.\n"
+        "%s modify <name> [-s|--size <size>] [--readonly | --readwrite] [-f|--force]\n"
+        "  Resize image or change its readonly status. Images with children can't be made read-write.\n"
         "  If the new size is smaller than the old size, extra data will be purged.\n"
         "  You should resize file system in the image, if present, before shrinking it.\n"
         "  -f|--force  Proceed with shrinking or setting readwrite flag even if the image has children.\n"
@@ -155,8 +151,7 @@ void cli_tool_t::help()
         "  --no-color          Disable colored output\n"
         "  --json              JSON output\n"
         ,
-        exe_name, exe_name, exe_name, exe_name, exe_name, exe_name,
-        exe_name, exe_name, exe_name, exe_name, exe_name, exe_name
+        exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name, exe_name
     );
     exit(0);
 }
@@ -177,7 +172,7 @@ void cli_tool_t::change_parent(inode_t cur, inode_t new_parent)
     new_cfg.parent_id = new_parent;
     json11::Json::object cur_cfg_json = cli->st_cli.serialize_inode_cfg(&new_cfg);
     waiting++;
-    cli->st_cli.etcd_txn_slow(json11::Json::object {
+    cli->st_cli.etcd_txn(json11::Json::object {
         { "compare", json11::Json::array {
             json11::Json::object {
                 { "target", "MOD" },
@@ -194,7 +189,7 @@ void cli_tool_t::change_parent(inode_t cur, inode_t new_parent)
                 } }
             },
         } },
-    }, [this, new_parent, cur, cur_name](std::string err, json11::Json res)
+    }, ETCD_SLOW_TIMEOUT, [this, new_parent, cur, cur_name](std::string err, json11::Json res)
     {
         if (err != "")
         {
@@ -229,22 +224,6 @@ void cli_tool_t::change_parent(inode_t cur, inode_t new_parent)
     });
 }
 
-void cli_tool_t::etcd_txn(json11::Json txn)
-{
-    waiting++;
-    cli->st_cli.etcd_txn_slow(txn, [this](std::string err, json11::Json res)
-    {
-        waiting--;
-        if (err != "")
-        {
-            fprintf(stderr, "Error reading from etcd: %s\n", err.c_str());
-            exit(1);
-        }
-        etcd_result = res;
-        ringloop->wakeup();
-    });
-}
-
 inode_config_t* cli_tool_t::get_inode_cfg(const std::string & name)
 {
     for (auto & ic: cli->st_cli.inode_config)
@@ -266,11 +245,6 @@ void cli_tool_t::run(json11::Json cfg)
         fprintf(stderr, "command is missing\n");
         exit(1);
     }
-    else if (cmd[0] == "df")
-    {
-        // Show pool space stats
-        action_cb = start_df(cfg);
-    }
     else if (cmd[0] == "ls")
     {
         // List images
@@ -321,10 +295,6 @@ void cli_tool_t::run(json11::Json cfg)
         fprintf(stderr, "unknown command: %s\n", cmd[0].string_value().c_str());
         exit(1);
     }
-    if (action_cb == NULL)
-    {
-        return;
-    }
     color = !cfg["no-color"].bool_value();
     json_output = cfg["json"].bool_value();
     iodepth = cfg["iodepth"].uint64_value();
@@ -365,13 +335,6 @@ void cli_tool_t::run(json11::Json cfg)
         if (action_cb != NULL)
             ringloop->wait();
     }
-    // Destroy the client
-    delete cli;
-    delete epmgr;
-    delete ringloop;
-    cli = NULL;
-    epmgr = NULL;
-    ringloop = NULL;
 }
 
 int main(int narg, const char *args[])
@@ -381,6 +344,5 @@ int main(int narg, const char *args[])
     exe_name = args[0];
     cli_tool_t *p = new cli_tool_t();
     p->run(cli_tool_t::parse_args(narg, args));
-    delete p;
     return 0;
 }

src/cli.h

@@ -34,7 +34,6 @@ public:
     cluster_client_t *cli = NULL;
 
     int waiting = 0;
-    json11::Json etcd_result;
     ring_consumer_t consumer;
     std::function<bool(void)> action_cb;
 
@@ -51,7 +50,6 @@ public:
     friend struct snap_flattener_t;
     friend struct snap_remover_t;
 
-    std::function<bool(void)> start_df(json11::Json);
     std::function<bool(void)> start_ls(json11::Json);
     std::function<bool(void)> start_create(json11::Json);
     std::function<bool(void)> start_modify(json11::Json);
@@ -61,18 +59,7 @@ public:
     std::function<bool(void)> start_snap_rm(json11::Json);
     std::function<bool(void)> start_alloc_osd(json11::Json cfg, uint64_t *out = NULL);
     std::function<bool(void)> simple_offsets(json11::Json cfg);
-
-    void etcd_txn(json11::Json txn);
 };
 
-uint64_t parse_size(std::string size_str);
-
-std::string print_table(json11::Json items, json11::Json header, bool use_esc);
-
 std::string format_size(uint64_t size);
-
-std::string format_lat(uint64_t lat);
-
-std::string format_q(double depth);
-
-bool stupid_glob(const std::string str, const std::string glob);
+uint64_t parse_size(std::string size_str);

src/cli_alloc_osd.cpp

@@ -13,6 +13,7 @@ struct alloc_osd_t
 {
     cli_tool_t *parent;
 
+    json11::Json result;
     uint64_t new_id = 1;
 
     int state = 0;
@@ -28,7 +29,7 @@ struct alloc_osd_t
             goto resume_1;
         do
         {
-            parent->etcd_txn(json11::Json::object {
+            etcd_txn(json11::Json::object {
                 { "compare", json11::Json::array {
                     json11::Json::object {
                         { "target", "VERSION" },
@@ -62,10 +63,10 @@ struct alloc_osd_t
             state = 1;
             if (parent->waiting > 0)
                 return;
-            if (!parent->etcd_result["succeeded"].bool_value())
+            if (!result["succeeded"].bool_value())
             {
                 std::vector<osd_num_t> used;
-                for (auto kv: parent->etcd_result["responses"][0]["response_range"]["kvs"].array_items())
+                for (auto kv: result["responses"][0]["response_range"]["kvs"].array_items())
                 {
                     std::string key = base64_decode(kv["key"].string_value());
                     osd_num_t cur_osd;
@@ -97,9 +98,25 @@ struct alloc_osd_t
                     new_id = used[e-1]+1;
                 }
             }
-        } while (!parent->etcd_result["succeeded"].bool_value());
+        } while (!result["succeeded"].bool_value());
         state = 100;
     }
+
+    void etcd_txn(json11::Json txn)
+    {
+        parent->waiting++;
+        parent->cli->st_cli.etcd_txn(txn, ETCD_SLOW_TIMEOUT, [this](std::string err, json11::Json res)
+        {
+            parent->waiting--;
+            if (err != "")
+            {
+                fprintf(stderr, "Error reading from etcd: %s\n", err.c_str());
+                exit(1);
+            }
+            this->result = res;
+            parent->ringloop->wakeup();
+        });
+    }
 };
 
 std::function<bool(void)> cli_tool_t::start_alloc_osd(json11::Json cfg, uint64_t *out)
@@ -107,7 +124,7 @@ std::function<bool(void)> cli_tool_t::start_alloc_osd(json11::Json cfg, uint64_t
     json11::Json::array cmd = cfg["command"].array_items();
     auto alloc_osd = new alloc_osd_t();
     alloc_osd->parent = this;
-    return [alloc_osd, out]()
+    return [alloc_osd, &out]()
     {
         alloc_osd->loop();
         if (alloc_osd->is_done())

src/cli_create.cpp

@@ -31,6 +31,7 @@ struct image_creator_t
     inode_t new_parent_id = 0;
     inode_t new_id = 0, old_id = 0;
     uint64_t max_id_mod_rev = 0, cfg_mod_rev = 0, idx_mod_rev = 0;
+    json11::Json result;
 
     int state = 0;
 
@@ -48,8 +49,7 @@ struct image_creator_t
             auto & pools = parent->cli->st_cli.pool_config;
             if (pools.find(new_pool_id) == pools.end())
             {
-                fprintf(stderr, "Pool %u does not exist\n", new_pool_id);
-                exit(1);
+                new_pool_id = 0;
             }
         }
         else if (new_pool_name != "")
@@ -62,17 +62,24 @@ struct image_creator_t
                     break;
                 }
             }
-            if (!new_pool_id)
-            {
-                fprintf(stderr, "Pool %s does not exist\n", new_pool_name.c_str());
-                exit(1);
-            }
         }
         else if (parent->cli->st_cli.pool_config.size() == 1)
         {
             auto it = parent->cli->st_cli.pool_config.begin();
             new_pool_id = it->first;
         }
+        if (!new_pool_id)
+        {
+            if (new_pool_name == "")
+            {
+                fprintf(stderr, "Pool name or ID is missing\n");
+            }
+            else
+            {
+                fprintf(stderr, "Pool %s does not exist\n", new_pool_name.c_str());
+            }
+            exit(1);
+        }
         state = 1;
     resume_1:
         if (new_snap == "")
@@ -87,6 +94,11 @@ struct image_creator_t
             goto resume_2;
         else if (state == 3)
             goto resume_3;
+        if (!size)
+        {
+            fprintf(stderr, "Image size is missing\n");
+            exit(1);
+        }
         for (auto & ic: parent->cli->st_cli.inode_config)
         {
             if (ic.second.name == image_name)
@@ -94,56 +106,29 @@ struct image_creator_t
                 fprintf(stderr, "Image %s already exists\n", image_name.c_str());
                 exit(1);
             }
-            if (ic.second.name == new_parent)
-            {
-                new_parent_id = ic.second.num;
-                if (!new_pool_id)
-                {
-                    new_pool_id = INODE_POOL(ic.second.num);
-                }
-                if (!size)
-                {
-                    size = ic.second.size;
-                }
-            }
-        }
-        if (new_parent != "" && !new_parent_id)
-        {
-            fprintf(stderr, "Parent image not found\n");
-            exit(1);
-        }
-        if (!new_pool_id)
-        {
-            fprintf(stderr, "Pool name or ID is missing\n");
-            exit(1);
-        }
-        if (!size)
-        {
-            fprintf(stderr, "Image size is missing\n");
-            exit(1);
         }
         do
         {
-            parent->etcd_txn(json11::Json::object {
+            etcd_txn(json11::Json::object {
                 { "success", json11::Json::array { get_next_id() } }
             });
             state = 2;
 resume_2:
             if (parent->waiting > 0)
                 return;
-            extract_next_id(parent->etcd_result["responses"][0]);
+            extract_next_id(result["responses"][0]);
             attempt_create();
             state = 3;
 resume_3:
             if (parent->waiting > 0)
                 return;
-            if (!parent->etcd_result["succeeded"].bool_value() &&
-                parent->etcd_result["responses"][0]["response_range"]["kvs"].array_items().size() > 0)
+            if (!result["succeeded"].bool_value() &&
+                result["responses"][0]["response_range"]["kvs"].array_items().size() > 0)
             {
                 fprintf(stderr, "Image %s already exists\n", image_name.c_str());
                 exit(1);
             }
-        } while (!parent->etcd_result["succeeded"].bool_value());
+        } while (!result["succeeded"].bool_value());
         if (parent->progress)
         {
             printf("Image %s created\n", image_name.c_str());
@@ -167,11 +152,6 @@ resume_3:
                 exit(1);
             }
         }
-        if (new_parent != "")
-        {
-            fprintf(stderr, "--parent can't be used with snapshots\n");
-            exit(1);
-        }
         do
         {
             // In addition to next_id, get: size, old_id, old_pool_id, new_parent, cfg_mod_rev, idx_mod_rev
@@ -185,23 +165,18 @@ resume_3:
                 fprintf(stderr, "Image %s does not exist\n", image_name.c_str());
                 exit(1);
             }
-            if (!new_pool_id)
-            {
-                // Create snapshot in the same pool by default
-                new_pool_id = old_pool_id;
-            }
             attempt_create();
             state = 4;
 resume_4:
             if (parent->waiting > 0)
                 return;
-            if (!parent->etcd_result["succeeded"].bool_value() &&
-                parent->etcd_result["responses"][0]["response_range"]["kvs"].array_items().size() > 0)
+            if (!result["succeeded"].bool_value() &&
+                result["responses"][0]["response_range"]["kvs"].array_items().size() > 0)
             {
                 fprintf(stderr, "Snapshot %s@%s already exists\n", image_name.c_str(), new_snap.c_str());
                 exit(1);
             }
-        } while (!parent->etcd_result["succeeded"].bool_value());
+        } while (!result["succeeded"].bool_value());
         if (parent->progress)
         {
             printf("Snapshot %s@%s created\n", image_name.c_str(), new_snap.c_str());
@@ -245,7 +220,7 @@ resume_4:
             goto resume_2;
         else if (state == 3)
             goto resume_3;
-        parent->etcd_txn(json11::Json::object { { "success", json11::Json::array {
+        etcd_txn(json11::Json::object { { "success", json11::Json::array {
             get_next_id(),
             json11::Json::object {
                 { "request_range", json11::Json::object {
@@ -259,11 +234,11 @@ resume_4:
 resume_2:
         if (parent->waiting > 0)
             return;
-        extract_next_id(parent->etcd_result["responses"][0]);
+        extract_next_id(result["responses"][0]);
         old_id = 0;
         old_pool_id = 0;
         cfg_mod_rev = idx_mod_rev = 0;
-        if (parent->etcd_result["responses"][1]["response_range"]["kvs"].array_items().size() == 0)
+        if (result["responses"][1]["response_range"]["kvs"].array_items().size() == 0)
         {
             for (auto & ic: parent->cli->st_cli.inode_config)
             {
@@ -282,7 +257,7 @@ resume_2:
         {
             // FIXME: Parse kvs in etcd_state_client automatically
             {
-                auto kv = parent->cli->st_cli.parse_etcd_kv(parent->etcd_result["responses"][1]["response_range"]["kvs"][0]);
+                auto kv = parent->cli->st_cli.parse_etcd_kv(result["responses"][1]["response_range"]["kvs"][0]);
                 old_id = INODE_NO_POOL(kv.value["id"].uint64_value());
                 old_pool_id = (pool_id_t)kv.value["pool_id"].uint64_value();
                 idx_mod_rev = kv.mod_revision;
@@ -292,7 +267,7 @@ resume_2:
                     exit(1);
                 }
             }
-            parent->etcd_txn(json11::Json::object {
+            etcd_txn(json11::Json::object {
                 { "success", json11::Json::array {
                     json11::Json::object {
                         { "request_range", json11::Json::object {
@@ -309,7 +284,7 @@ resume_3:
             if (parent->waiting > 0)
                 return;
             {
-                auto kv = parent->cli->st_cli.parse_etcd_kv(parent->etcd_result["responses"][0]["response_range"]["kvs"][0]);
+                auto kv = parent->cli->st_cli.parse_etcd_kv(result["responses"][0]["response_range"]["kvs"][0]);
                 size = kv.value["size"].uint64_value();
                 new_parent_id = kv.value["parent_id"].uint64_value();
                 uint64_t parent_pool_id = kv.value["parent_pool_id"].uint64_value();
@@ -438,20 +413,32 @@ resume_3:
                 } },
             });
         };
-        parent->etcd_txn(json11::Json::object {
+        etcd_txn(json11::Json::object {
             { "compare", checks },
             { "success", success },
             { "failure", failure },
         });
     }
+
+    void etcd_txn(json11::Json txn)
+    {
+        parent->waiting++;
+        parent->cli->st_cli.etcd_txn(txn, ETCD_SLOW_TIMEOUT, [this](std::string err, json11::Json res)
+        {
+            parent->waiting--;
+            if (err != "")
+            {
+                fprintf(stderr, "Error reading from etcd: %s\n", err.c_str());
+                exit(1);
+            }
+            this->result = res;
+            parent->ringloop->wakeup();
+        });
+    }
 };
 
 uint64_t parse_size(std::string size_str)
 {
-    if (!size_str.length())
-    {
-        return 0;
-    }
     uint64_t mul = 1;
     char type_char = tolower(size_str[size_str.length()-1]);
     if (type_char == 'k' || type_char == 'm' || type_char == 'g' || type_char == 't')

src/cli_df.cpp

@@ -1,229 +0,0 @@
-// Copyright (c) Vitaliy Filippov, 2019+
-// License: VNPL-1.1 (see README.md for details)
-
-#include "cli.h"
-#include "cluster_client.h"
-#include "base64.h"
-
-// List pools with space statistics
-struct pool_lister_t
-{
-    cli_tool_t *parent;
-
-    int state = 0;
-    json11::Json space_info;
-    std::map<pool_id_t, json11::Json::object> pool_stats;
-
-    bool is_done()
-    {
-        return state == 100;
-    }
-
-    void get_stats()
-    {
-        if (state == 1)
-            goto resume_1;
-        // Space statistics - pool/stats/<pool>
-        parent->etcd_txn(json11::Json::object {
-            { "success", json11::Json::array {
-                json11::Json::object {
-                    { "request_range", json11::Json::object {
-                        { "key", base64_encode(
-                            parent->cli->st_cli.etcd_prefix+"/pool/stats/"
-                        ) },
-                        { "range_end", base64_encode(
-                            parent->cli->st_cli.etcd_prefix+"/pool/stats0"
-                        ) },
-                    } },
-                },
-                json11::Json::object {
-                    { "request_range", json11::Json::object {
-                        { "key", base64_encode(
-                            parent->cli->st_cli.etcd_prefix+"/osd/stats/"
-                        ) },
-                        { "range_end", base64_encode(
-                            parent->cli->st_cli.etcd_prefix+"/osd/stats0"
-                        ) },
-                    } },
-                },
-            } },
-        });
-        state = 1;
-resume_1:
-        if (parent->waiting > 0)
-            return;
-        space_info = parent->etcd_result;
-        std::map<pool_id_t, uint64_t> osd_free;
-        for (auto & kv_item: space_info["responses"][0]["response_range"]["kvs"].array_items())
-        {
-            auto kv = parent->cli->st_cli.parse_etcd_kv(kv_item);
-            // pool ID
-            pool_id_t pool_id;
-            char null_byte = 0;
-            sscanf(kv.key.substr(parent->cli->st_cli.etcd_prefix.length()).c_str(), "/pool/stats/%u%c", &pool_id, &null_byte);
-            if (!pool_id || pool_id >= POOL_ID_MAX || null_byte != 0)
-            {
-                fprintf(stderr, "Invalid key in etcd: %s\n", kv.key.c_str());
-                continue;
-            }
-            // pool/stats/<N>
-            pool_stats[pool_id] = kv.value.object_items();
-        }
-        for (auto & kv_item: space_info["responses"][1]["response_range"]["kvs"].array_items())
-        {
-            auto kv = parent->cli->st_cli.parse_etcd_kv(kv_item);
-            // osd ID
-            osd_num_t osd_num;
-            char null_byte = 0;
-            sscanf(kv.key.substr(parent->cli->st_cli.etcd_prefix.length()).c_str(), "/osd/stats/%lu%c", &osd_num, &null_byte);
-            if (!osd_num || osd_num >= POOL_ID_MAX || null_byte != 0)
-            {
-                fprintf(stderr, "Invalid key in etcd: %s\n", kv.key.c_str());
-                continue;
-            }
-            // osd/stats/<N>::free
-            osd_free[osd_num] = kv.value["free"].uint64_value();
-        }
-        // Calculate max_avail for each pool
-        for (auto & pp: parent->cli->st_cli.pool_config)
-        {
-            auto & pool_cfg = pp.second;
-            uint64_t pool_avail = UINT64_MAX;
-            std::map<osd_num_t, uint64_t> pg_per_osd;
-            for (auto & pgp: pool_cfg.pg_config)
-            {
-                for (auto pg_osd: pgp.second.target_set)
-                {
-                    if (pg_osd != 0)
-                    {
-                        pg_per_osd[pg_osd]++;
-                    }
-                }
-            }
-            for (auto pg_per_pair: pg_per_osd)
-            {
-                uint64_t pg_free = osd_free[pg_per_pair.first] * pool_cfg.pg_count / pg_per_pair.second;
-                if (pool_avail > pg_free)
-                {
-                    pool_avail = pg_free;
-                }
-            }
-            if (pool_avail == UINT64_MAX)
-            {
-                pool_avail = 0;
-            }
-            if (pool_cfg.scheme != POOL_SCHEME_REPLICATED)
-            {
-                uint64_t pg_real_size = pool_stats[pool_cfg.id]["pg_real_size"].uint64_value();
-                pool_avail = pg_real_size > 0 ? pool_avail * (pool_cfg.pg_size - pool_cfg.parity_chunks) / pg_real_size : 0;
-            }
-            pool_stats[pool_cfg.id] = json11::Json::object {
-                { "name", pool_cfg.name },
-                { "pg_count", pool_cfg.pg_count },
-                { "scheme", pool_cfg.scheme == POOL_SCHEME_REPLICATED ? "replicated" : "jerasure" },
-                { "scheme_name", pool_cfg.scheme == POOL_SCHEME_REPLICATED
-                    ? std::to_string(pool_cfg.pg_size)+"/"+std::to_string(pool_cfg.pg_minsize)
-                    : "EC "+std::to_string(pool_cfg.pg_size-pool_cfg.parity_chunks)+"+"+std::to_string(pool_cfg.parity_chunks) },
-                { "used_raw", (uint64_t)(pool_stats[pool_cfg.id]["used_raw_tb"].number_value() * (1l<<40)) },
-                { "total_raw", (uint64_t)(pool_stats[pool_cfg.id]["total_raw_tb"].number_value() * (1l<<40)) },
-                { "max_available", pool_avail },
-                { "raw_to_usable", pool_stats[pool_cfg.id]["raw_to_usable"].number_value() },
-                { "space_efficiency", pool_stats[pool_cfg.id]["space_efficiency"].number_value() },
-                { "pg_real_size", pool_stats[pool_cfg.id]["pg_real_size"].uint64_value() },
-                { "failure_domain", pool_cfg.failure_domain },
-            };
-        }
-    }
-
-    json11::Json::array to_list()
-    {
-        json11::Json::array list;
-        for (auto & kv: pool_stats)
-        {
-            list.push_back(kv.second);
-        }
-        return list;
-    }
-
-    void loop()
-    {
-        get_stats();
-        if (parent->waiting > 0)
-            return;
-        if (parent->json_output)
-        {
-            // JSON output
-            printf("%s\n", json11::Json(to_list()).dump().c_str());
-            state = 100;
-            return;
-        }
-        // Table output: name, scheme_name, pg_count, total, used, max_avail, used%, efficiency
-        json11::Json::array cols;
-        cols.push_back(json11::Json::object{
-            { "key", "name" },
-            { "title", "NAME" },
-        });
-        cols.push_back(json11::Json::object{
-            { "key", "scheme_name" },
-            { "title", "SCHEME" },
-        });
-        cols.push_back(json11::Json::object{
-            { "key", "pg_count" },
-            { "title", "PGS" },
-        });
-        cols.push_back(json11::Json::object{
-            { "key", "total_fmt" },
-            { "title", "TOTAL" },
-        });
-        cols.push_back(json11::Json::object{
-            { "key", "used_fmt" },
-            { "title", "USED" },
-        });
-        cols.push_back(json11::Json::object{
-            { "key", "max_avail_fmt" },
-            { "title", "AVAILABLE" },
-        });
-        cols.push_back(json11::Json::object{
-            { "key", "used_pct" },
-            { "title", "USED%" },
-        });
-        cols.push_back(json11::Json::object{
-            { "key", "eff_fmt" },
-            { "title", "EFFICIENCY" },
-        });
-        json11::Json::array list;
-        for (auto & kv: pool_stats)
-        {
-            double raw_to = kv.second["raw_to_usable"].number_value();
-            if (raw_to < 0.000001 && raw_to > -0.000001)
-                raw_to = 1;
-            kv.second["total_fmt"] = format_size(kv.second["total_raw"].uint64_value() / raw_to);
-            kv.second["used_fmt"] = format_size(kv.second["used_raw"].uint64_value() / raw_to);
-            kv.second["max_avail_fmt"] = format_size(kv.second["max_available"].uint64_value());
-            kv.second["used_pct"] = format_q(kv.second["total_raw"].uint64_value()
-                ? (100 - 100*kv.second["max_available"].uint64_value() *
-                    kv.second["raw_to_usable"].number_value() / kv.second["total_raw"].uint64_value())
-                : 100)+"%";
-            kv.second["eff_fmt"] = format_q(kv.second["space_efficiency"].number_value()*100)+"%";
-        }
-        printf("%s", print_table(to_list(), cols, parent->color).c_str());
-        state = 100;
-    }
-};
-
-std::function<bool(void)> cli_tool_t::start_df(json11::Json cfg)
-{
-    json11::Json::array cmd = cfg["command"].array_items();
-    auto lister = new pool_lister_t();
-    lister->parent = this;
-    return [lister]()
-    {
-        lister->loop();
-        if (lister->is_done())
-        {
-            delete lister;
-            return true;
-        }
-        return false;
-    };
-}

src/cli_flatten.cpp

@@ -3,7 +3,6 @@
 
 #include "cli.h"
 #include "cluster_client.h"
-#include <sys/stat.h>
 
 // Flatten a layer: merge all parents into a layer and break the connection completely
 struct snap_flattener_t

src/cli_ls.cpp

@@ -6,6 +6,16 @@
 #include "cluster_client.h"
 #include "base64.h"
 
+#define MIN(a, b) ((a) < (b) ? (b) : (a))
+
+std::string print_table(json11::Json items, json11::Json header, bool use_esc);
+
+std::string format_size(uint64_t size);
+
+std::string format_lat(uint64_t lat);
+
+std::string format_q(double depth);
+
 // List existing images
 //
 // Again, you can just look into etcd, but this console tool incapsulates it
@@ -84,7 +94,8 @@ struct image_lister_t
         // Space statistics
         // inode/stats/<pool>/<inode>::raw_used divided by pool/stats/<pool>::pg_real_size
         // multiplied by 1 or number of data drives
-        parent->etcd_txn(json11::Json::object {
+        parent->waiting++;
+        parent->cli->st_cli.etcd_txn(json11::Json::object {
             { "success", json11::Json::array {
                 json11::Json::object {
                     { "request_range", json11::Json::object {
@@ -111,12 +122,21 @@ struct image_lister_t
                     } },
                 },
             } },
+        }, ETCD_SLOW_TIMEOUT, [this](std::string err, json11::Json res)
+        {
+            parent->waiting--;
+            if (err != "")
+            {
+                fprintf(stderr, "Error reading from etcd: %s\n", err.c_str());
+                exit(1);
+            }
+            space_info = res;
+            parent->ringloop->wakeup();
         });
         state = 1;
 resume_1:
         if (parent->waiting > 0)
             return;
-        space_info = parent->etcd_result;
         std::map<pool_id_t, uint64_t> pool_pg_real_size;
         for (auto & kv_item: space_info["responses"][0]["response_range"]["kvs"].array_items())
         {
@@ -193,21 +213,10 @@ resume_1:
         json11::Json::array list;
         for (auto & kv: stats)
         {
-            if (!only_names.size())
+            if (!only_names.size() || only_names.find(kv.second["name"].string_value()) != only_names.end())
             {
                 list.push_back(kv.second);
             }
-            else
-            {
-                for (auto glob: only_names)
-                {
-                    if (stupid_glob(kv.second["name"].string_value(), glob))
-                    {
-                        list.push_back(kv.second);
-                        break;
-                    }
-                }
-            }
         }
         if (sort_field == "name" || sort_field == "pool_name")
         {
@@ -346,9 +355,6 @@ resume_1:
                 kv.second["read_bw"] = format_size(kv.second["read_bps"].uint64_value())+"/s";
                 kv.second["write_bw"] = format_size(kv.second["write_bps"].uint64_value())+"/s";
                 kv.second["delete_bw"] = format_size(kv.second["delete_bps"].uint64_value())+"/s";
-                kv.second["read_iops"] = format_q(kv.second["read_iops"].number_value());
-                kv.second["write_iops"] = format_q(kv.second["write_iops"].number_value());
-                kv.second["delete_iops"] = format_q(kv.second["delete_iops"].number_value());
                 kv.second["read_lat_f"] = format_lat(kv.second["read_lat"].uint64_value());
                 kv.second["write_lat_f"] = format_lat(kv.second["write_lat"].uint64_value());
                 kv.second["delete_lat_f"] = format_lat(kv.second["delete_lat"].uint64_value());
@@ -487,62 +493,6 @@ std::string format_q(double depth)
     return std::string(buf);
 }
 
-struct glob_stack_t
-{
-    int glob_pos;
-    int str_pos;
-};
-
-// Yes I know I could do it by translating the pattern to std::regex O:-)
-bool stupid_glob(const std::string str, const std::string glob)
-{
-    std::vector<glob_stack_t> wildcards;
-    int pos = 0, gp = 0;
-    bool m;
-back:
-    while (true)
-    {
-        if (gp >= glob.length())
-        {
-            if (pos >= str.length())
-                return true;
-            m = false;
-        }
-        else if (glob[gp] == '*')
-        {
-            wildcards.push_back((glob_stack_t){ .glob_pos = ++gp, .str_pos = pos });
-            continue;
-        }
-        else if (glob[gp] == '?')
-            m = pos < str.size();
-        else
-        {
-            if (glob[gp] == '\\' && gp < glob.length()-1)
-                gp++;
-            m = pos < str.size() && str[pos] == glob[gp];
-        }
-        if (!m)
-        {
-            while (wildcards.size() > 0)
-            {
-                // Backtrack
-                pos = (++wildcards[wildcards.size()-1].str_pos);
-                if (pos > str.size())
-                    wildcards.pop_back();
-                else
-                {
-                    gp = wildcards[wildcards.size()-1].glob_pos;
-                    goto back;
-                }
-            }
-            return false;
-        }
-        pos++;
-        gp++;
-    }
-    return true;
-}
-
 std::function<bool(void)> cli_tool_t::start_ls(json11::Json cfg)
 {
     json11::Json::array cmd = cfg["command"].array_items();

src/cli_merge.cpp

@@ -412,7 +412,7 @@ struct snap_merger_t
         uint64_t bitmap_size = target_block_size / gran;
         while (rwo->end < bitmap_size)
         {
-            auto bit = ((*((uint8_t*)rwo->op.bitmap_buf + (rwo->end >> 3))) & (1 << (rwo->end & 0x7)));
+            auto bit = ((*(uint8_t*)(rwo->op.bitmap_buf + (rwo->end >> 3))) & (1 << (rwo->end & 0x7)));
             if (!bit)
             {
                 if (rwo->end > rwo->start)
@@ -459,7 +459,7 @@ struct snap_merger_t
         subop->len = end-start;
         subop->version = version;
         subop->flags = OSD_OP_IGNORE_READONLY;
-        subop->iov.push_back((uint8_t*)rwo->buf+start, end-start);
+        subop->iov.push_back(rwo->buf+start, end-start);
         subop->callback = [this, rwo](cluster_op_t *subop)
         {
             rwo->todo--;
@@ -495,7 +495,7 @@ struct snap_merger_t
         subop->offset = offset;
         subop->len = 0;
         subop->flags = OSD_OP_IGNORE_READONLY;
-        subop->callback = [](cluster_op_t *subop)
+        subop->callback = [this](cluster_op_t *subop)
         {
             if (subop->retval != 0)
             {
@@ -519,10 +519,10 @@ struct snap_merger_t
                 deleted_unsynced++;
                 if (deleted_unsynced >= fsync_interval)
                 {
-                    uint64_t to = last_written_offset;
+                    uint64_t from = last_fsync_offset, to = last_written_offset;
                     cluster_op_t *subop = new cluster_op_t;
                     subop->opcode = OSD_OP_SYNC;
-                    subop->callback = [this, to](cluster_op_t *subop)
+                    subop->callback = [this, from, to](cluster_op_t *subop)
                     {
                         delete subop;
                         // We can now delete source data between <from> and <to>

src/cli_modify.cpp

@@ -5,13 +5,12 @@
 #include "cluster_client.h"
 #include "base64.h"
 
-// Rename, resize image (and purge extra data on shrink) or change its readonly status
+// Resize image (purging extra data on shrink) or change its readonly status
 struct image_changer_t
 {
     cli_tool_t *parent;
 
     std::string image_name;
-    std::string new_name;
     uint64_t new_size = 0;
     bool set_readonly = false, set_readwrite = false, force = false;
     // interval between fsyncs
@@ -19,7 +18,7 @@ struct image_changer_t
 
     uint64_t inode_num = 0;
     inode_config_t cfg;
-    json11::Json::array checks, success;
+    std::string cur_cfg_key;
     bool has_children = false;
 
     int state = 0;
@@ -44,11 +43,6 @@ struct image_changer_t
                 cfg = ic.second;
                 break;
             }
-            if (new_name != "" && ic.second.name == new_name)
-            {
-                fprintf(stderr, "Image %s already exists\n", new_name.c_str());
-                exit(1);
-            }
         }
         if (!inode_num)
         {
@@ -63,23 +57,14 @@ struct image_changer_t
                 break;
             }
         }
-        if ((!set_readwrite || !cfg.readonly) &&
-            (!set_readonly || cfg.readonly) &&
-            (!new_size || cfg.size == new_size) &&
-            (new_name == "" || new_name == image_name))
-        {
-            printf("No change\n");
-            state = 100;
-            return;
-        }
         if (new_size != 0)
         {
             if (cfg.size >= new_size)
             {
-                // Check confirmation when trimming an image with children
+                // Check confirmation if trimming an image with children
                 if (has_children && !force)
                 {
-                    fprintf(stderr, "Image %s has children. Refusing to shrink it without --force\n", image_name.c_str());
+                    fprintf(stderr, "Image %s has children. Refusing to shrink it without --force", image_name.c_str());
                     exit(1);
                 }
                 // Shrink the image first
@@ -106,84 +91,56 @@ resume_1:
         if (set_readwrite)
         {
             cfg.readonly = false;
-            // Check confirmation when making an image with children read-write
-            if (has_children && !force)
+            // Check confirmation if trimming an image with children
+            if (!force)
             {
-                fprintf(stderr, "Image %s has children. Refusing to make it read-write without --force\n", image_name.c_str());
+                fprintf(stderr, "Image %s has children. Refusing to make it read-write without --force", image_name.c_str());
                 exit(1);
             }
         }
-        if (new_name != "")
-        {
-            cfg.name = new_name;
-        }
-        {
-            std::string cur_cfg_key = base64_encode(parent->cli->st_cli.etcd_prefix+
-                "/config/inode/"+std::to_string(INODE_POOL(inode_num))+
-                "/"+std::to_string(INODE_NO_POOL(inode_num)));
-            checks.push_back(json11::Json::object {
-                { "target", "MOD" },
-                { "key", cur_cfg_key },
-                { "result", "LESS" },
-                { "mod_revision", cfg.mod_revision+1 },
-            });
-            success.push_back(json11::Json::object {
-                { "request_put", json11::Json::object {
+        cur_cfg_key = base64_encode(parent->cli->st_cli.etcd_prefix+
+            "/config/inode/"+std::to_string(INODE_POOL(inode_num))+
+            "/"+std::to_string(INODE_NO_POOL(inode_num)));
+        parent->waiting++;
+        parent->cli->st_cli.etcd_txn(json11::Json::object {
+            { "compare", json11::Json::array {
+                json11::Json::object {
+                    { "target", "MOD" },
                     { "key", cur_cfg_key },
-                    { "value", base64_encode(json11::Json(
-                        parent->cli->st_cli.serialize_inode_cfg(&cfg)
-                    ).dump()) },
-                } }
-            });
-        }
-        if (new_name != "")
+                    { "result", "LESS" },
+                    { "mod_revision", cfg.mod_revision+1 },
+                },
+            } },
+            { "success", json11::Json::array {
+                json11::Json::object {
+                    { "request_put", json11::Json::object {
+                        { "key", cur_cfg_key },
+                        { "value", base64_encode(json11::Json(
+                            parent->cli->st_cli.serialize_inode_cfg(&cfg)
+                        ).dump()) },
+                    } }
+                },
+            } },
+        }, ETCD_SLOW_TIMEOUT, [this](std::string err, json11::Json res)
         {
-            std::string old_idx_key = base64_encode(
-                parent->cli->st_cli.etcd_prefix+"/index/image/"+image_name
-            );
-            std::string new_idx_key = base64_encode(
-                parent->cli->st_cli.etcd_prefix+"/index/image/"+new_name
-            );
-            checks.push_back(json11::Json::object {
-                { "target", "MOD" },
-                { "key", old_idx_key },
-                { "result", "LESS" },
-                { "mod_revision", cfg.mod_revision+1 },
-            });
-            checks.push_back(json11::Json::object {
-                { "target", "VERSION" },
-                { "version", 0 },
-                { "key", new_idx_key },
-            });
-            success.push_back(json11::Json::object {
-                { "request_delete_range", json11::Json::object {
-                    { "key", old_idx_key },
-                } }
-            });
-            success.push_back(json11::Json::object {
-                { "request_put", json11::Json::object {
-                    { "key", new_idx_key },
-                    { "value", base64_encode(json11::Json(json11::Json::object{
-                        { "id", INODE_NO_POOL(inode_num) },
-                        { "pool_id", (uint64_t)INODE_POOL(inode_num) },
-                    }).dump()) },
-                } }
-            });
-        }
-        parent->etcd_txn(json11::Json::object {
-            { "compare", checks },
-            { "success", success },
+            if (err != "")
+            {
+                fprintf(stderr, "Error changing %s: %s\n", image_name.c_str(), err.c_str());
+                exit(1);
+            }
+            if (!res["succeeded"].bool_value())
+            {
+                fprintf(stderr, "Image %s was modified by someone else, please repeat your request\n", image_name.c_str());
+                exit(1);
+            }
+            parent->waiting--;
+            parent->ringloop->wakeup();
         });
         state = 2;
 resume_2:
         if (parent->waiting > 0)
             return;
-        if (!parent->etcd_result["succeeded"].bool_value())
-        {
-            fprintf(stderr, "Image %s was modified by someone else, please repeat your request\n", image_name.c_str());
-            exit(1);
-        }
-        printf("Image %s modified\n", image_name.c_str());
+        printf("Image %s changed\n", image_name.c_str());
         state = 100;
     }
 };
@@ -199,8 +156,7 @@ std::function<bool(void)> cli_tool_t::start_modify(json11::Json cfg)
         fprintf(stderr, "Image name is missing\n");
         exit(1);
     }
-    changer->new_name = cfg["rename"].string_value();
-    changer->new_size = parse_size(cfg["resize"].string_value());
+    changer->new_size = cfg["size"].uint64_value();
     if (changer->new_size != 0 && (changer->new_size % 4096))
     {
         fprintf(stderr, "Image size should be a multiple of 4096\n");

src/cli_simple_offsets.cpp

@@ -8,7 +8,6 @@
 #include "cli.h"
 #include "cluster_client.h"
 #include "base64.h"
-#include <sys/stat.h>
 
 // Calculate offsets for a block device and print OSD command line parameters
 std::function<bool(void)> cli_tool_t::simple_offsets(json11::Json cfg)

src/cli_snap_rm.cpp

@@ -256,9 +256,9 @@ resume_9:
             });
         }
         parent->waiting++;
-        parent->cli->st_cli.etcd_txn_slow(json11::Json::object {
+        parent->cli->st_cli.etcd_txn(json11::Json::object {
             { "success", reads },
-        }, [this](std::string err, json11::Json data)
+        }, ETCD_SLOW_TIMEOUT, [this](std::string err, json11::Json data)
         {
             parent->waiting--;
             if (err != "")
@@ -414,10 +414,10 @@ resume_9:
             }
         }
         parent->waiting++;
-        parent->cli->st_cli.etcd_txn_slow(json11::Json::object {
+        parent->cli->st_cli.etcd_txn(json11::Json::object {
             { "compare", cmp },
             { "success", txn },
-        }, [this, target_name, child_name](std::string err, json11::Json res)
+        }, ETCD_SLOW_TIMEOUT, [this, target_name, child_name](std::string err, json11::Json res)
         {
             parent->waiting--;
             if (err != "")
@@ -454,7 +454,7 @@ resume_9:
             "/"+std::to_string(INODE_NO_POOL(cur))
         );
         parent->waiting++;
-        parent->cli->st_cli.etcd_txn_slow(json11::Json::object {
+        parent->cli->st_cli.etcd_txn(json11::Json::object {
             { "compare", json11::Json::array {
                 json11::Json::object {
                     { "target", "MOD" },
@@ -468,14 +468,12 @@ resume_9:
                     { "request_delete_range", json11::Json::object {
                         { "key", cur_cfg_key },
                     } },
-                },
-                json11::Json::object {
                     { "request_delete_range", json11::Json::object {
                         { "key", base64_encode(parent->cli->st_cli.etcd_prefix+"/index/image/"+cur_name) },
                     } },
                 },
             } },
-        }, [this, cur_name](std::string err, json11::Json res)
+        }, ETCD_SLOW_TIMEOUT, [this, cur_name](std::string err, json11::Json res)
         {
             parent->waiting--;
             if (err != "")

src/cluster_client.cpp

@@ -64,7 +64,6 @@ cluster_client_t::cluster_client_t(ring_loop_t *ringloop, timerfd_manager_t *tfd
     st_cli.on_change_osd_state_hook = [this](uint64_t peer_osd) { on_change_osd_state_hook(peer_osd); };
     st_cli.on_change_hook = [this](std::map<std::string, etcd_kv_t> & changes) { on_change_hook(changes); };
     st_cli.on_load_pgs_hook = [this](bool success) { on_load_pgs_hook(success); };
-    st_cli.on_reload_hook = [this]() { st_cli.load_global_config(); };
 
     st_cli.parse_config(config);
     st_cli.load_global_config();
@@ -534,8 +533,8 @@ void cluster_client_t::copy_write(cluster_op_t *op, std::map<object_id, cluster_
             unsigned iov_len = (op->iov.buf[iov_idx].iov_len - iov_pos);
             if (iov_len <= cur_len)
             {
-                memcpy((uint8_t*)dirty_it->second.buf + pos - dirty_it->first.stripe,
-                    (uint8_t*)op->iov.buf[iov_idx].iov_base + iov_pos, iov_len);
+                memcpy(dirty_it->second.buf + pos - dirty_it->first.stripe,
+                    op->iov.buf[iov_idx].iov_base + iov_pos, iov_len);
                 pos += iov_len;
                 len -= iov_len;
                 cur_len -= iov_len;
@@ -544,8 +543,8 @@ void cluster_client_t::copy_write(cluster_op_t *op, std::map<object_id, cluster_
             }
             else
             {
-                memcpy((uint8_t*)dirty_it->second.buf + pos - dirty_it->first.stripe,
-                    (uint8_t*)op->iov.buf[iov_idx].iov_base + iov_pos, cur_len);
+                memcpy(dirty_it->second.buf + pos - dirty_it->first.stripe,
+                    op->iov.buf[iov_idx].iov_base + iov_pos, cur_len);
                 pos += cur_len;
                 len -= cur_len;
                 iov_pos += cur_len;
@@ -762,7 +761,7 @@ static void add_iov(int size, bool skip, cluster_op_t *op, int &iov_idx, size_t
         {
             if (!skip)
             {
-                iov.push_back((uint8_t*)op->iov.buf[iov_idx].iov_base + iov_pos, cur_left);
+                iov.push_back(op->iov.buf[iov_idx].iov_base + iov_pos, cur_left);
             }
             left -= cur_left;
             iov_pos = 0;
@@ -772,7 +771,7 @@ static void add_iov(int size, bool skip, cluster_op_t *op, int &iov_idx, size_t
         {
             if (!skip)
             {
-                iov.push_back((uint8_t*)op->iov.buf[iov_idx].iov_base + iov_pos, left);
+                iov.push_back(op->iov.buf[iov_idx].iov_base + iov_pos, left);
             }
             iov_pos += left;
             left = 0;
@@ -817,7 +816,7 @@ void cluster_client_t::slice_rw(cluster_op_t *op)
                 // First allocation
                 memset(op->bitmap_buf, 0, object_bitmap_size);
             }
-            op->part_bitmaps = (uint8_t*)op->bitmap_buf + object_bitmap_size;
+            op->part_bitmaps = op->bitmap_buf + object_bitmap_size;
             op->bitmap_buf_size = bitmap_mem;
         }
     }
@@ -839,7 +838,7 @@ void cluster_client_t::slice_rw(cluster_op_t *op)
             while (cur < end)
             {
                 unsigned bmp_loc = (cur - op->offset)/bs_bitmap_granularity;
-                bool skip = (((*((uint8_t*)op->bitmap_buf + bmp_loc/8)) >> (bmp_loc%8)) & 0x1);
+                bool skip = (((*(uint8_t*)(op->bitmap_buf + bmp_loc/8)) >> (bmp_loc%8)) & 0x1);
                 if (skip_prev != skip)
                 {
                     if (cur > prev)
@@ -944,7 +943,7 @@ bool cluster_client_t::try_send(cluster_op_t *op, int i)
                     .meta_revision = meta_rev,
                     .version = op->opcode == OSD_OP_WRITE || op->opcode == OSD_OP_DELETE ? op->version : 0,
                 } },
-                .bitmap = (op->opcode == OSD_OP_READ || op->opcode == OSD_OP_READ_BITMAP ? (uint8_t*)op->part_bitmaps + pg_bitmap_size*i : NULL),
+                .bitmap = (op->opcode == OSD_OP_READ || op->opcode == OSD_OP_READ_BITMAP ? op->part_bitmaps + pg_bitmap_size*i : NULL),
                 .bitmap_len = (unsigned)(op->opcode == OSD_OP_READ || op->opcode == OSD_OP_READ_BITMAP ? pg_bitmap_size : 0),
                 .callback = [this, part](osd_op_t *op_part)
                 {
@@ -1155,7 +1154,7 @@ void cluster_client_t::copy_part_bitmap(cluster_op_t *op, cluster_op_part_t *par
     if (!(object_offset & 0x7) && !(part_offset & 0x7) && (part_len >= 8))
     {
         // Copy bytes
-        mem_or((uint8_t*)op->bitmap_buf + object_offset/8, (uint8_t*)part->op.bitmap + part_offset/8, part_len/8);
+        mem_or(op->bitmap_buf + object_offset/8, part->op.bitmap + part_offset/8, part_len/8);
         object_offset += (part_len & ~0x7);
         part_offset += (part_len & ~0x7);
         part_len = (part_len & 0x7);
@@ -1163,8 +1162,8 @@ void cluster_client_t::copy_part_bitmap(cluster_op_t *op, cluster_op_part_t *par
     while (part_len > 0)
     {
         // Copy bits
-        (*((uint8_t*)op->bitmap_buf + (object_offset >> 3))) |= (
-            (((*((uint8_t*)part->op.bitmap + (part_offset >> 3))) >> (part_offset & 0x7)) & 0x1) << (object_offset & 0x7)
+        (*(uint8_t*)(op->bitmap_buf + (object_offset >> 3))) |= (
+            (((*(uint8_t*)(part->op.bitmap + (part_offset >> 3))) >> (part_offset & 0x7)) & 0x1) << (object_offset & 0x7)
         );
         part_offset++;
         object_offset++;

src/dump_journal.cpp

@@ -75,7 +75,7 @@ int main(int argc, char *argv[])
             uint64_t s;
             for (s = 0; s < self.journal_block; s += 8)
             {
-                if (*((uint64_t*)((uint8_t*)data+s)) != 0)
+                if (*((uint64_t*)(data+s)) != 0)
                     break;
             }
             if (s == self.journal_block)
@@ -139,7 +139,7 @@ int journal_dump_t::dump_block(void *buf)
     bool wrapped = false;
     while (pos < journal_block)
     {
-        journal_entry *je = (journal_entry*)((uint8_t*)buf + pos);
+        journal_entry *je = (journal_entry*)(buf + pos);
         if (je->magic != JOURNAL_MAGIC || je->type < JE_MIN || je->type > JE_MAX ||
             !all && started && je->crc32_prev != crc32_last)
         {

src/epoll_manager.cpp

@@ -13,7 +13,6 @@
 epoll_manager_t::epoll_manager_t(ring_loop_t *ringloop)
 {
     this->ringloop = ringloop;
-    this->pending = false;
 
     epoll_fd = epoll_create(1);
     if (epoll_fd < 0)
@@ -23,19 +22,11 @@ epoll_manager_t::epoll_manager_t(ring_loop_t *ringloop)
 
     tfd = new timerfd_manager_t([this](int fd, bool wr, std::function<void(int, int)> handler) { set_fd_handler(fd, wr, handler); });
 
-    consumer.loop = [this]()
-    {
-        if (pending)
-            handle_epoll_events();
-    };
-    ringloop->register_consumer(&consumer);
-
     handle_epoll_events();
 }
 
 epoll_manager_t::~epoll_manager_t()
 {
-    ringloop->unregister_consumer(&consumer);
     if (tfd)
     {
         delete tfd;
@@ -73,13 +64,8 @@ void epoll_manager_t::handle_epoll_events()
     io_uring_sqe *sqe = ringloop->get_sqe();
     if (!sqe)
     {
-        // Don't handle epoll events until we manage to post the next event handler
-        // otherwise we'll fall out of sync with EPOLLET
-        pending = true;
-        ringloop->wakeup();
-        return;
+        throw std::runtime_error("can't get SQE, will fall out of sync with EPOLLET");
     }
-    pending = false;
     ring_data_t *data = ((ring_data_t*)sqe->user_data);
     my_uring_prep_poll_add(sqe, epoll_fd, POLLIN);
     data->callback = [this](ring_data_t *data)

src/epoll_manager.h

@@ -11,8 +11,6 @@
 class epoll_manager_t
 {
     int epoll_fd;
-    bool pending;
-    ring_consumer_t consumer;
     ring_loop_t *ringloop;
     std::map<int, std::function<void(int, int)>> epoll_handlers;
 public:

src/etcd_state_client.cpp

@@ -5,7 +5,6 @@
 #include "pg_states.h"
 #include "etcd_state_client.h"
 #ifndef __MOCK__
-#include "addr_util.h"
 #include "http_client.h"
 #include "base64.h"
 #endif
@@ -18,22 +17,12 @@ etcd_state_client_t::~etcd_state_client_t()
     }
     watches.clear();
     etcd_watches_initialised = -1;
-    if (ws_keepalive_timer >= 0)
-    {
-        tfd->clear_timer(ws_keepalive_timer);
-        ws_keepalive_timer = -1;
-    }
 #ifndef __MOCK__
     if (etcd_watch_ws)
     {
-        http_close(etcd_watch_ws);
+        etcd_watch_ws->close();
         etcd_watch_ws = NULL;
     }
-    if (keepalive_client)
-    {
-        http_close(keepalive_client);
-        keepalive_client = NULL;
-    }
 #endif
 }
 
@@ -54,26 +43,19 @@ etcd_kv_t etcd_state_client_t::parse_etcd_kv(const json11::Json & kv_json)
     return kv;
 }
 
-void etcd_state_client_t::etcd_txn(json11::Json txn, int timeout, int retries, int interval, std::function<void(std::string, json11::Json)> callback)
+void etcd_state_client_t::etcd_txn(json11::Json txn, int timeout, std::function<void(std::string, json11::Json)> callback)
 {
-    etcd_call("/kv/txn", txn, timeout, retries, interval, callback);
+    etcd_call("/kv/txn", txn, timeout, callback);
 }
 
-void etcd_state_client_t::etcd_txn_slow(json11::Json txn, std::function<void(std::string, json11::Json)> callback)
+void etcd_state_client_t::etcd_call(std::string api, json11::Json payload, int timeout, std::function<void(std::string, json11::Json)> callback)
 {
-    etcd_call("/kv/txn", txn, etcd_slow_timeout, max_etcd_attempts, 0, callback);
-}
-
-void etcd_state_client_t::etcd_call(std::string api, json11::Json payload, int timeout,
-    int retries, int interval, std::function<void(std::string, json11::Json)> callback)
-{
-    if (!etcd_addresses.size() && !etcd_local.size())
+    if (!etcd_addresses.size())
     {
         fprintf(stderr, "etcd_address is missing in Vitastor configuration\n");
         exit(1);
     }
-    pick_next_etcd();
-    std::string etcd_address = selected_etcd_address;
+    std::string etcd_address = etcd_addresses[rand() % etcd_addresses.size()];
     std::string etcd_api_path;
     int pos = etcd_address.find('/');
     if (pos >= 0)
@@ -86,49 +68,9 @@ void etcd_state_client_t::etcd_call(std::string api, json11::Json payload, int t
         "Host: "+etcd_address+"\r\n"
         "Content-Type: application/json\r\n"
         "Content-Length: "+std::to_string(req.size())+"\r\n"
-        "Connection: keep-alive\r\n"
-        "Keep-Alive: timeout="+std::to_string(etcd_keepalive_timeout)+"\r\n"
+        "Connection: close\r\n"
         "\r\n"+req;
-    auto cb = [this, api, payload, timeout, retries, interval, callback,
-        cur_addr = selected_etcd_address](const http_response_t *response)
-    {
-        std::string err;
-        json11::Json data;
-        response->parse_json_response(err, data);
-        if (err != "")
-        {
-            if (cur_addr == selected_etcd_address)
-                selected_etcd_address = "";
-            if (retries > 0)
-            {
-                if (this->log_level > 0)
-                {
-                    printf(
-                        "Warning: etcd request failed: %s, retrying %d more times\n",
-                        err.c_str(), retries
-                    );
-                }
-                if (interval > 0)
-                {
-                    tfd->set_timer(interval, false, [this, api, payload, timeout, retries, interval, callback](int)
-                    {
-                        etcd_call(api, payload, timeout, retries-1, interval, callback);
-                    });
-                }
-                else
-                    etcd_call(api, payload, timeout, retries-1, interval, callback);
-            }
-            else
-                callback(err, data);
-        }
-        else
-            callback(err, data);
-    };
-    if (!keepalive_client)
-    {
-        keepalive_client = http_init(tfd);
-    }
-    http_request(keepalive_client, etcd_address, req, { .timeout = timeout, .keepalive = true }, cb);
+    http_request_json(tfd, etcd_address, req, timeout, callback);
 }
 
 void etcd_state_client_t::add_etcd_url(std::string addr)
@@ -142,30 +84,9 @@ void etcd_state_client_t::add_etcd_url(std::string addr)
             fprintf(stderr, "HTTPS is unsupported for etcd. Either use plain HTTP or setup a local proxy for etcd interaction\n");
             exit(1);
         }
-        if (!local_ips.size())
-            local_ips = getifaddr_list();
-        std::string check_addr;
-        int pos = addr.find('/');
-        int pos2 = addr.find(':');
-        if (pos2 >= 0)
-            check_addr = addr.substr(0, pos2);
-        else if (pos >= 0)
-            check_addr = addr.substr(0, pos);
-        else
-            check_addr = addr;
-        if (pos == std::string::npos)
+        if (addr.find('/') == std::string::npos)
             addr += "/v3";
-        int i;
-        for (i = 0; i < local_ips.size(); i++)
-        {
-            if (local_ips[i] == check_addr)
-            {
-                this->etcd_local.push_back(addr);
-                break;
-            }
-        }
-        if (i >= local_ips.size())
-            this->etcd_addresses.push_back(addr);
+        this->etcd_addresses.push_back(addr);
     }
 }
 
@@ -202,74 +123,16 @@ void etcd_state_client_t::parse_config(const json11::Json & config)
         this->etcd_prefix = "/"+this->etcd_prefix;
     }
     this->log_level = config["log_level"].int64_value();
-    this->etcd_keepalive_timeout = config["etcd_keepalive_timeout"].uint64_value();
-    if (this->etcd_keepalive_timeout <= 0)
-    {
-        this->etcd_keepalive_timeout = config["etcd_report_interval"].uint64_value() * 2;
-        if (this->etcd_keepalive_timeout < 30)
-            this->etcd_keepalive_timeout = 30;
-    }
-    this->etcd_ws_keepalive_interval = config["etcd_ws_keepalive_interval"].uint64_value();
-    if (this->etcd_ws_keepalive_interval <= 0)
-    {
-        this->etcd_ws_keepalive_interval = 30;
-    }
-    this->max_etcd_attempts = config["max_etcd_attempts"].uint64_value();
-    if (this->max_etcd_attempts <= 0)
-    {
-        this->max_etcd_attempts = 5;
-    }
-    this->etcd_slow_timeout = config["etcd_slow_timeout"].uint64_value();
-    if (this->etcd_slow_timeout <= 0)
-    {
-        this->etcd_slow_timeout = 5000;
-    }
-    this->etcd_quick_timeout = config["etcd_quick_timeout"].uint64_value();
-    if (this->etcd_quick_timeout <= 0)
-    {
-        this->etcd_quick_timeout = 1000;
-    }
-}
-
-void etcd_state_client_t::pick_next_etcd()
-{
-    if (selected_etcd_address != "")
-        return;
-    if (addresses_to_try.size() == 0)
-    {
-        // Prefer local etcd, if any
-        for (int i = 0; i < etcd_local.size(); i++)
-            addresses_to_try.push_back(etcd_local[i]);
-        std::vector<int> ns;
-        for (int i = 0; i < etcd_addresses.size(); i++)
-            ns.push_back(i);
-        if (!rand_initialized)
-        {
-            timespec tv;
-            clock_gettime(CLOCK_REALTIME, &tv);
-            srand48(tv.tv_sec*1000000000 + tv.tv_nsec);
-            rand_initialized = true;
-        }
-        while (ns.size())
-        {
-            int i = lrand48() % ns.size();
-            addresses_to_try.push_back(etcd_addresses[ns[i]]);
-            ns.erase(ns.begin()+i, ns.begin()+i+1);
-        }
-    }
-    selected_etcd_address = addresses_to_try[0];
-    addresses_to_try.erase(addresses_to_try.begin(), addresses_to_try.begin()+1);
 }
 
 void etcd_state_client_t::start_etcd_watcher()
 {
-    if (!etcd_addresses.size() && !etcd_local.size())
+    if (!etcd_addresses.size())
     {
         fprintf(stderr, "etcd_address is missing in Vitastor configuration\n");
         exit(1);
     }
-    pick_next_etcd();
-    std::string etcd_address = selected_etcd_address;
+    std::string etcd_address = etcd_addresses[rand() % etcd_addresses.size()];
     std::string etcd_api_path;
     int pos = etcd_address.find('/');
     if (pos >= 0)
@@ -278,20 +141,10 @@ void etcd_state_client_t::start_etcd_watcher()
         etcd_address = etcd_address.substr(0, pos);
     }
     etcd_watches_initialised = 0;
-    ws_alive = 1;
-    if (etcd_watch_ws)
-    {
-        http_close(etcd_watch_ws);
-        etcd_watch_ws = NULL;
-    }
-    if (this->log_level > 1)
-        printf("Trying to connect to etcd websocket at %s\n", etcd_address.c_str());
-    etcd_watch_ws = open_websocket(tfd, etcd_address, etcd_api_path+"/watch", etcd_slow_timeout,
-        [this, cur_addr = selected_etcd_address](const http_response_t *msg)
+    etcd_watch_ws = open_websocket(tfd, etcd_address, etcd_api_path+"/watch", ETCD_SLOW_TIMEOUT, [this](const http_response_t *msg)
     {
         if (msg->body.length())
         {
-            ws_alive = 1;
             std::string json_err;
             json11::Json data = json11::Json::parse(msg->body, json_err);
             if (json_err != "")
@@ -302,46 +155,11 @@ void etcd_state_client_t::start_etcd_watcher()
             {
                 if (data["result"]["created"].bool_value())
                 {
-                    if (etcd_watches_initialised == 3 && this->log_level > 0)
-                        fprintf(stderr, "Successfully subscribed to etcd at %s\n", selected_etcd_address.c_str());
                     etcd_watches_initialised++;
                 }
-                if (data["result"]["canceled"].bool_value())
-                {
-                    // etcd watch canceled, maybe because the revision was compacted
-                    if (data["result"]["compact_revision"].uint64_value())
-                    {
-                        // we may miss events if we proceed
-                        // so we should restart from the beginning if we can
-                        if (on_reload_hook != NULL)
-                        {
-                            fprintf(stderr, "Revisions before %lu were compacted by etcd, reloading state\n",
-                                data["result"]["compact_revision"].uint64_value());
-                            if (etcd_watch_ws)
-                            {
-                                http_close(etcd_watch_ws);
-                                etcd_watch_ws = NULL;
-                            }
-                            etcd_watch_revision = 0;
-                            on_reload_hook();
-                        }
-                        else
-                        {
-                            fprintf(stderr, "Revisions before %lu were compacted by etcd, exiting\n",
-                                data["result"]["compact_revision"].uint64_value());
-                            exit(1);
-                        }
-                    }
-                    else
-                    {
-                        fprintf(stderr, "Watch canceled by etcd, reason: %s, exiting\n", data["result"]["cancel_reason"].string_value().c_str());
-                        exit(1);
-                    }
-                }
                 if (etcd_watches_initialised == 4)
                 {
-                    etcd_watch_revision = data["result"]["header"]["revision"].uint64_value()+1;
-                    addresses_to_try.clear();
+                    etcd_watch_revision = data["result"]["header"]["revision"].uint64_value();
                 }
                 // First gather all changes into a hash to remove multiple overwrites
                 std::map<std::string, etcd_kv_t> changes;
@@ -370,22 +188,11 @@ void etcd_state_client_t::start_etcd_watcher()
         }
         if (msg->eof)
         {
-            if (cur_addr == selected_etcd_address)
-            {
-                fprintf(stderr, "Disconnected from etcd %s\n", selected_etcd_address.c_str());
-                selected_etcd_address = "";
-            }
-            else
-                fprintf(stderr, "Disconnected from etcd\n");
-            if (etcd_watch_ws)
-            {
-                http_close(etcd_watch_ws);
-                etcd_watch_ws = NULL;
-            }
+            etcd_watch_ws = NULL;
             if (etcd_watches_initialised == 0)
             {
-                // Connection not established, retry in <etcd_quick_timeout>
-                tfd->set_timer(etcd_quick_timeout, false, [this](int)
+                // Connection not established, retry in <ETCD_SLOW_TIMEOUT>
+                tfd->set_timer(ETCD_SLOW_TIMEOUT, false, [this](int)
                 {
                     start_etcd_watcher();
                 });
@@ -397,84 +204,54 @@ void etcd_state_client_t::start_etcd_watcher()
             }
         }
     });
-    http_post_message(etcd_watch_ws, WS_TEXT, json11::Json(json11::Json::object {
+    etcd_watch_ws->post_message(WS_TEXT, json11::Json(json11::Json::object {
         { "create_request", json11::Json::object {
             { "key", base64_encode(etcd_prefix+"/config/") },
             { "range_end", base64_encode(etcd_prefix+"/config0") },
-            { "start_revision", etcd_watch_revision },
+            { "start_revision", etcd_watch_revision+1 },
             { "watch_id", ETCD_CONFIG_WATCH_ID },
             { "progress_notify", true },
         } }
     }).dump());
-    http_post_message(etcd_watch_ws, WS_TEXT, json11::Json(json11::Json::object {
+    etcd_watch_ws->post_message(WS_TEXT, json11::Json(json11::Json::object {
         { "create_request", json11::Json::object {
             { "key", base64_encode(etcd_prefix+"/osd/state/") },
             { "range_end", base64_encode(etcd_prefix+"/osd/state0") },
-            { "start_revision", etcd_watch_revision },
+            { "start_revision", etcd_watch_revision+1 },
             { "watch_id", ETCD_OSD_STATE_WATCH_ID },
             { "progress_notify", true },
         } }
     }).dump());
-    http_post_message(etcd_watch_ws, WS_TEXT, json11::Json(json11::Json::object {
+    etcd_watch_ws->post_message(WS_TEXT, json11::Json(json11::Json::object {
         { "create_request", json11::Json::object {
             { "key", base64_encode(etcd_prefix+"/pg/state/") },
             { "range_end", base64_encode(etcd_prefix+"/pg/state0") },
-            { "start_revision", etcd_watch_revision },
+            { "start_revision", etcd_watch_revision+1 },
             { "watch_id", ETCD_PG_STATE_WATCH_ID },
             { "progress_notify", true },
         } }
     }).dump());
-    http_post_message(etcd_watch_ws, WS_TEXT, json11::Json(json11::Json::object {
+    etcd_watch_ws->post_message(WS_TEXT, json11::Json(json11::Json::object {
         { "create_request", json11::Json::object {
             { "key", base64_encode(etcd_prefix+"/pg/history/") },
             { "range_end", base64_encode(etcd_prefix+"/pg/history0") },
-            { "start_revision", etcd_watch_revision },
+            { "start_revision", etcd_watch_revision+1 },
             { "watch_id", ETCD_PG_HISTORY_WATCH_ID },
             { "progress_notify", true },
         } }
     }).dump());
-    if (ws_keepalive_timer < 0)
-    {
-        ws_keepalive_timer = tfd->set_timer(etcd_ws_keepalive_interval*1000, true, [this](int)
-        {
-            if (!etcd_watch_ws)
-            {
-                // Do nothing
-            }
-            else if (!ws_alive)
-            {
-                if (this->log_level > 0)
-                {
-                    fprintf(stderr, "Websocket ping failed, disconnecting from etcd %s\n", selected_etcd_address.c_str());
-                }
-                if (etcd_watch_ws)
-                {
-                    http_close(etcd_watch_ws);
-                    etcd_watch_ws = NULL;
-                }
-                start_etcd_watcher();
-            }
-            else
-            {
-                ws_alive = 0;
-                http_post_message(etcd_watch_ws, WS_TEXT, json11::Json(json11::Json::object {
-                    { "progress_request", json11::Json::object { } }
-                }).dump());
-            }
-        });
-    }
 }
 
 void etcd_state_client_t::load_global_config()
 {
     etcd_call("/kv/range", json11::Json::object {
         { "key", base64_encode(etcd_prefix+"/config/global") }
-    }, etcd_slow_timeout, max_etcd_attempts, 0, [this](std::string err, json11::Json data)
+    }, ETCD_SLOW_TIMEOUT, [this](std::string err, json11::Json data)
     {
         if (err != "")
         {
             fprintf(stderr, "Error reading OSD configuration from etcd: %s\n", err.c_str());
-            tfd->set_timer(etcd_slow_timeout, false, [this](int timer_id)
+            tfd->set_timer(ETCD_SLOW_TIMEOUT, false, [this](int timer_id)
             {
                 load_global_config();
             });
@@ -542,13 +319,12 @@ void etcd_state_client_t::load_pgs()
     {
         req["compare"] = checks;
     }
-    etcd_txn_slow(req, [this](std::string err, json11::Json data)
+    etcd_txn(req, ETCD_SLOW_TIMEOUT, [this](std::string err, json11::Json data)
     {
         if (err != "")
         {
-            // Retry indefinitely
             fprintf(stderr, "Error loading PGs from etcd: %s\n", err.c_str());
-            tfd->set_timer(etcd_slow_timeout, false, [this](int timer_id)
+            tfd->set_timer(ETCD_SLOW_TIMEOUT, false, [this](int timer_id)
             {
                 load_pgs();
             });
@@ -561,7 +337,7 @@ void etcd_state_client_t::load_pgs()
         }
         if (!etcd_watch_revision)
         {
-            etcd_watch_revision = data["header"]["revision"].uint64_value()+1;
+            etcd_watch_revision = data["header"]["revision"].uint64_value();
         }
         for (auto & res: data["responses"].array_items())
         {
@@ -1008,8 +784,3 @@ json11::Json::object etcd_state_client_t::serialize_inode_cfg(inode_config_t *cf
     }
     return new_cfg;
 }
-
-int etcd_state_client_t::address_count()
-{
-    return etcd_addresses.size() + etcd_local.size();
-}

src/etcd_state_client.h

@@ -12,6 +12,10 @@
 #define ETCD_PG_HISTORY_WATCH_ID 3
 #define ETCD_OSD_STATE_WATCH_ID 4
 
+#define MAX_ETCD_ATTEMPTS 5
+#define ETCD_SLOW_TIMEOUT 5000
+#define ETCD_QUICK_TIMEOUT 1000
+
 #define DEFAULT_BLOCK_SIZE 128*1024
 
 struct etcd_kv_t
@@ -66,31 +70,17 @@ struct inode_watch_t
     inode_config_t cfg;
 };
 
-struct http_co_t;
+struct websocket_t;
 
 struct etcd_state_client_t
 {
 protected:
-    std::vector<std::string> local_ips;
-    std::vector<std::string> etcd_addresses;
-    std::vector<std::string> etcd_local;
-    std::string selected_etcd_address;
-    std::vector<std::string> addresses_to_try;
     std::vector<inode_watch_t*> watches;
-    http_co_t *etcd_watch_ws = NULL, *keepalive_client = NULL;
-    int ws_keepalive_timer = -1;
-    int ws_alive = 0;
-    bool rand_initialized = false;
+    websocket_t *etcd_watch_ws = NULL;
     uint64_t bs_block_size = DEFAULT_BLOCK_SIZE;
     void add_etcd_url(std::string);
-    void pick_next_etcd();
 public:
-    int etcd_keepalive_timeout = 30;
-    int etcd_ws_keepalive_interval = 30;
-    int max_etcd_attempts = 5;
-    int etcd_quick_timeout = 1000;
-    int etcd_slow_timeout = 5000;
-
+    std::vector<std::string> etcd_addresses;
     std::string etcd_prefix;
     int log_level = 0;
     timerfd_manager_t *tfd = NULL;
@@ -108,13 +98,11 @@ public:
     std::function<void(bool)> on_load_pgs_hook;
     std::function<void(pool_id_t, pg_num_t)> on_change_pg_history_hook;
     std::function<void(osd_num_t)> on_change_osd_state_hook;
-    std::function<void()> on_reload_hook;
 
     json11::Json::object serialize_inode_cfg(inode_config_t *cfg);
     etcd_kv_t parse_etcd_kv(const json11::Json & kv_json);
-    void etcd_call(std::string api, json11::Json payload, int timeout, int retries, int interval, std::function<void(std::string, json11::Json)> callback);
-    void etcd_txn(json11::Json txn, int timeout, int retries, int interval, std::function<void(std::string, json11::Json)> callback);
-    void etcd_txn_slow(json11::Json txn, std::function<void(std::string, json11::Json)> callback);
+    void etcd_call(std::string api, json11::Json payload, int timeout, std::function<void(std::string, json11::Json)> callback);
+    void etcd_txn(json11::Json txn, int timeout, std::function<void(std::string, json11::Json)> callback);
     void start_etcd_watcher();
     void load_global_config();
     void load_pgs();
@@ -122,6 +110,5 @@ public:
     void parse_config(const json11::Json & config);
     inode_watch_t* watch_inode(std::string name);
     void close_watch(inode_watch_t* watch);
-    int address_count();
     ~etcd_state_client_t();
 };

src/fio_cluster.cpp

@@ -247,12 +247,6 @@ static int sec_setup(struct thread_data *td)
             vitastor_c_uring_wait_events(bsd->cli);
         }
         td->files[0]->real_file_size = vitastor_c_inode_get_size(bsd->watch);
-        if (!vitastor_c_inode_get_num(bsd->watch) ||
-            !td->files[0]->real_file_size)
-        {
-            td_verror(td, EINVAL, "image does not exist");
-            return 1;
-        }
     }
 
     bsd->trace = o->trace ? true : false;

src/fio_engine.cpp

@@ -26,9 +26,10 @@
 
 #include "blockstore.h"
 #include "epoll_manager.h"
-#include "json11/json11.hpp"
 #include "fio_headers.h"
 
+#include "json11/json11.hpp"
+
 struct bs_data
 {
     blockstore_t *bs;
@@ -149,6 +150,7 @@ static int bs_init(struct thread_data *td)
 static enum fio_q_status bs_queue(struct thread_data *td, struct io_u *io)
 {
     bs_data *bsd = (bs_data*)td->io_ops_data;
+    int n = bsd->op_n;
     if (io->ddir == DDIR_SYNC && bsd->last_sync)
     {
         return FIO_Q_COMPLETED;
@@ -176,7 +178,7 @@ static enum fio_q_status bs_queue(struct thread_data *td, struct io_u *io)
         op->version = UINT64_MAX; // last unstable
         op->offset = io->offset % bsd->bs->get_block_size();
         op->len = io->xfer_buflen;
-        op->callback = [io](blockstore_op_t *op)
+        op->callback = [io, n](blockstore_op_t *op)
         {
             io->error = op->retval < 0 ? -op->retval : 0;
             bs_data *bsd = (bs_data*)io->engine_data;
@@ -198,7 +200,7 @@ static enum fio_q_status bs_queue(struct thread_data *td, struct io_u *io)
         op->version = 0; // assign automatically
         op->offset = io->offset % bsd->bs->get_block_size();
         op->len = io->xfer_buflen;
-        op->callback = [io](blockstore_op_t *op)
+        op->callback = [io, n](blockstore_op_t *op)
         {
             io->error = op->retval < 0 ? -op->retval : 0;
             bs_data *bsd = (bs_data*)io->engine_data;
@@ -213,7 +215,7 @@ static enum fio_q_status bs_queue(struct thread_data *td, struct io_u *io)
         break;
     case DDIR_SYNC:
         op->opcode = BS_OP_SYNC_STAB_ALL;
-        op->callback = [io](blockstore_op_t *op)
+        op->callback = [io, n](blockstore_op_t *op)
         {
             bs_data *bsd = (bs_data*)io->engine_data;
             io->error = op->retval < 0 ? -op->retval : 0;
@@ -228,7 +230,6 @@ static enum fio_q_status bs_queue(struct thread_data *td, struct io_u *io)
         break;
     default:
         io->error = EINVAL;
-        delete op;
         return FIO_Q_COMPLETED;
     }
 

src/fio_headers.h

@@ -1,3 +1,4 @@
+extern "C" {
 // Kill atomics in fio headers
 #define _STDATOMIC_H
 #include "fio/arch/arch.h"
@@ -10,7 +11,6 @@
 #define CONFIG_HAVE_GETTID
 #define CONFIG_SYNC_FILE_RANGE
 #define CONFIG_PWRITEV2
-extern "C" {
 #include "fio/fio.h"
 #include "fio/optgroup.h"
 }

src/fio_sec_osd.cpp

@@ -28,23 +28,16 @@
 #include <vector>
 #include <unordered_map>
 
-#include "addr_util.h"
 #include "rw_blocking.h"
 #include "osd_ops.h"
 #include "fio_headers.h"
 
-struct op_buf_t
-{
-    osd_any_op_t buf;
-    io_u* fio_op;
-};
-
 struct sec_data
 {
     int connect_fd;
     /* block_size = 1 << block_order (128KB by default) */
     uint64_t block_order = 17, block_size = 1 << 17;
-    std::unordered_map<uint64_t, op_buf_t*> queue;
+    std::unordered_map<uint64_t, io_u*> queue;
     bool last_sync = false;
     /* The list of completed io_u structs. */
     std::vector<io_u*> completed;
@@ -59,7 +52,6 @@ struct sec_options
     int single_primary = 0;
     int trace = 0;
     int block_order = 17;
-    int zerocopy_send = 0;
 };
 
 static struct fio_option options[] = {
@@ -110,16 +102,6 @@ static struct fio_option options[] = {
         .category = FIO_OPT_C_ENGINE,
         .group  = FIO_OPT_G_FILENAME,
     },
-    {
-        .name   = "zerocopy_send",
-        .lname  = "Use zero-copy send",
-        .type   = FIO_OPT_BOOL,
-        .off1   = offsetof(struct sec_options, zerocopy_send),
-        .help   = "Use zero-copy send (MSG_ZEROCOPY)",
-        .def    = "0",
-        .category = FIO_OPT_C_ENGINE,
-        .group  = FIO_OPT_G_FILENAME,
-    },
     {
         .name = NULL,
     },
@@ -170,14 +152,17 @@ static int sec_init(struct thread_data *td)
     bsd->block_order = o->block_order == 0 ? 17 : o->block_order;
     bsd->block_size = 1 << o->block_order;
 
-    sockaddr addr;
-    if (!string_to_addr(std::string(o->host ? o->host : "127.0.0.1"), false, o->port > 0 ? o->port : 11203, &addr))
+    struct sockaddr_in addr;
+    int r;
+    if ((r = inet_pton(AF_INET, o->host ? o->host : "127.0.0.1", &addr.sin_addr)) != 1)
     {
-        fprintf(stderr, "server address: %s is not valid\n", o->host ? o->host : "127.0.0.1");
+        fprintf(stderr, "server address: %s%s\n", o->host ? o->host : "127.0.0.1", r == 0 ? " is not valid" : ": no ipv4 support");
         return 1;
     }
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(o->port ? o->port : 11203);
 
-    bsd->connect_fd = socket(addr.sa_family, SOCK_STREAM, 0);
+    bsd->connect_fd = socket(AF_INET, SOCK_STREAM, 0);
     if (bsd->connect_fd < 0)
     {
         perror("socket");
@@ -190,19 +175,6 @@ static int sec_init(struct thread_data *td)
     }
     int one = 1;
     setsockopt(bsd->connect_fd, SOL_TCP, TCP_NODELAY, &one, sizeof(one));
-    if (o->zerocopy_send)
-    {
-#ifndef SO_ZEROCOPY
-        perror("zerocopy send not supported on your system (socket.h misses SO_ZEROCOPY)");
-        return 1;
-#else
-        if (setsockopt(bsd->connect_fd, SOL_SOCKET, SO_ZEROCOPY, &one, sizeof(one)) < 0)
-        {
-            perror("setsockopt zerocopy");
-            return 1;
-        }
-#endif
-    }
 
     // FIXME: read config (block size) from OSD
 
@@ -223,9 +195,7 @@ static enum fio_q_status sec_queue(struct thread_data *td, struct io_u *io)
     }
 
     io->engine_data = bsd;
-    op_buf_t *op_buf = new op_buf_t;
-    op_buf->fio_op = io;
-    osd_any_op_t &op = op_buf->buf;
+    osd_any_op_t op = { 0 };
 
     op.hdr.magic = SECONDARY_OSD_OP_MAGIC;
     op.hdr.id = n;
@@ -289,7 +259,6 @@ static enum fio_q_status sec_queue(struct thread_data *td, struct io_u *io)
         break;
     default:
         io->error = EINVAL;
-        delete op_buf;
         return FIO_Q_COMPLETED;
     }
 
@@ -302,24 +271,19 @@ static enum fio_q_status sec_queue(struct thread_data *td, struct io_u *io)
     io->error = 0;
     bsd->inflight++;
     bsd->op_n++;
-    bsd->queue[n] = op_buf;
+    bsd->queue[n] = io;
 
     iovec iov[2] = { { .iov_base = op.buf, .iov_len = OSD_PACKET_SIZE } };
     int iovcnt = 1, wtotal = OSD_PACKET_SIZE;
     if (io->ddir == DDIR_WRITE)
     {
-        iov[iovcnt++] = { .iov_base = io->xfer_buf, .iov_len = io->xfer_buflen };
+        iov[1] = { .iov_base = io->xfer_buf, .iov_len = io->xfer_buflen };
         wtotal += io->xfer_buflen;
+        iovcnt++;
     }
-    if (sendv_blocking(bsd->connect_fd, iov, iovcnt,
-#ifdef SO_ZEROCOPY
-        opt->zerocopy_send ? MSG_ZEROCOPY : 0
-#else
-        0
-#endif
-    ) != wtotal)
+    if (writev_blocking(bsd->connect_fd, iov, iovcnt) != wtotal)
     {
-        perror("sendmsg");
+        perror("writev");
         exit(1);
     }
 
@@ -348,8 +312,7 @@ static int sec_getevents(struct thread_data *td, unsigned int min, unsigned int
             fprintf(stderr, "bad reply: op id %lx missing in local queue\n", reply.hdr.id);
             exit(1);
         }
-        io_u* io = it->second->fio_op;
-        delete it->second;
+        io_u* io = it->second;
         bsd->queue.erase(it);
         if (io->ddir == DDIR_READ)
         {
@@ -358,23 +321,7 @@ static int sec_getevents(struct thread_data *td, unsigned int min, unsigned int
                 fprintf(stderr, "Short read: retval = %ld instead of %llu\n", reply.hdr.retval, io->xfer_buflen);
                 exit(1);
             }
-            // Support bitmap
-            uint64_t bitmap = 0;
-            int iovcnt = 0;
-            iovec iov[2];
-            if (reply.sec_rw.attr_len > 0)
-            {
-                if (reply.sec_rw.attr_len <= 8)
-                    iov[iovcnt++] = { .iov_base = &bitmap, .iov_len = reply.sec_rw.attr_len };
-                else
-                    iov[iovcnt++] = { .iov_base = (void*)(bitmap = (uint64_t)malloc(reply.sec_rw.attr_len)), .iov_len = reply.sec_rw.attr_len };
-            }
-            iov[iovcnt++] = { .iov_base = io->xfer_buf, .iov_len = io->xfer_buflen };
-            readv_blocking(bsd->connect_fd, iov, iovcnt);
-            if (reply.sec_rw.attr_len > 8)
-            {
-                free((void*)bitmap);
-            }
+            read_blocking(bsd->connect_fd, io->xfer_buf, io->xfer_buflen);
         }
         else if (io->ddir == DDIR_WRITE)
         {