Vitaliy Filippov
7972502eaf
New features: - RDMA without ODP - much faster and all cards are now supported, not just Mellanox - VDUSE in CSI - faster, more stable and can even recover after CSI pod restart! - Reserve journal space for stabilize requests dynamically to prevent stalls under load with EC - Raise default NBD timeout from 30 to 300 seconds and allow to take it from /etc/vitastor/vitastor.conf - Remove explicit etcdUrl/etcdPrefix K8S storage class parameter support to prevent etcd migration issues for volumes created with these parameters - Support QEMU 8.1 and pve-qemu 8.1 Bug fixes: - Fix RDMA connection (and thus memory) leak - Fix rare crashes under load due to incorrect io_uring queue size tracking - Fix monitor statistics aggregation in case of empty /osd/stats keys - Fix crash on unknown long argument to vitastor-disk - Allow trailing comma in JSONs again - Fix crash on attempts to dump a long listing of objects "to stabilize" or "to rollback" in a slow op |
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cpp-btree@45e6d1f131 | ||
csi | ||
debian | ||
docker | ||
docs | ||
json11@fd37016cf8 | ||
mon | ||
patches | ||
rpm | ||
src | ||
tests | ||
.dockerignore | ||
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CMakeLists.txt | ||
GPL-2.0.txt | ||
LICENSE | ||
README-ru.md | ||
README.md | ||
VNPL-1.1-RU.txt | ||
VNPL-1.1.txt | ||
copy-fio-includes.sh | ||
copy-qemu-includes.sh |
README.md
Vitastor
The Idea
Make Clustered Block Storage Fast Again.
Vitastor is a distributed block SDS, direct replacement of Ceph RBD and internal SDS's of public clouds. However, in contrast to them, Vitastor is fast and simple at the same time. The only thing is it's slightly young :-).
Vitastor is architecturally similar to Ceph which means strong consistency, primary-replication, symmetric clustering and automatic data distribution over any number of drives of any size with configurable redundancy (replication or erasure codes/XOR).
Vitastor targets primarily SSD and SSD+HDD clusters with at least 10 Gbit/s network, supports TCP and RDMA and may achieve 4 KB read and write latency as low as ~0.1 ms with proper hardware which is ~10 times faster than other popular SDS's like Ceph or internal systems of public clouds.
Vitastor supports QEMU, NBD, NFS protocols, OpenStack, Proxmox, Kubernetes drivers. More drivers may be created easily.
Read more details below in the documentation.
Talks and presentations
- DevOpsConf'2021: presentation (in Russian, in English), video
- Highload'2022: presentation (in Russian), video
Documentation
- Introduction
- Installation
- Configuration
- Usage
- vitastor-cli (command-line interface)
- vitastor-disk (disk management tool)
- fio for benchmarks
- NBD for kernel mounts
- QEMU and qemu-img
- NFS emulator for VMWare and similar
- Performance
Author and License
Copyright (c) Vitaliy Filippov (vitalif [at] yourcmc.ru), 2019+
Join Vitastor Telegram Chat: https://t.me/vitastor
All server-side code (OSD, Monitor and so on) is licensed under the terms of Vitastor Network Public License 1.1 (VNPL 1.1), a copyleft license based on GNU GPLv3.0 with the additional "Network Interaction" clause which requires opensourcing all programs directly or indirectly interacting with Vitastor through a computer network and expressly designed to be used in conjunction with it ("Proxy Programs"). Proxy Programs may be made public not only under the terms of the same license, but also under the terms of any GPL-Compatible Free Software License, as listed by the Free Software Foundation. This is a stricter copyleft license than the Affero GPL.
Please note that VNPL doesn't require you to open the code of proprietary software running inside a VM if it's not specially designed to be used with Vitastor.
Basically, you can't use the software in a proprietary environment to provide its functionality to users without opensourcing all intermediary components standing between the user and Vitastor or purchasing a commercial license from the author 😀.
Client libraries (cluster_client and so on) are dual-licensed under the same VNPL 1.1 and also GNU GPL 2.0 or later to allow for compatibility with GPLed software like QEMU and fio.
You can find the full text of VNPL-1.1 in the file VNPL-1.1.txt. GPL 2.0 is also included in this repository as GPL-2.0.txt.