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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Wolfgang Bumiller <w.bumiller@proxmox.com>
Date: Wed, 2 Aug 2017 13:51:02 +0200
Subject: [PATCH] backup: introduce vma archive format
---
MAINTAINERS | 6 +
block/Makefile.objs | 3 +
block/vma.c | 424 ++++++++++++++++++++++++++++++++++++++++
blockdev.c | 536 +++++++++++++++++++++++++++++++++++++++++++++++++++
blockjob.c | 3 +-
configure | 30 +++
hmp-commands-info.hx | 13 ++
hmp-commands.hx | 31 +++
hmp.c | 63 ++++++
hmp.h | 3 +
qapi/block-core.json | 109 ++++++++++-
11 files changed, 1219 insertions(+), 2 deletions(-)
create mode 100644 block/vma.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 0255113470..581d80d144 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1950,6 +1950,12 @@ L: qemu-block@nongnu.org
S: Supported
F: block/vvfat.c
+VMA
+M: Wolfgang Bumiller <w.bumiller@proxmox.com>.
+L: pve-devel@proxmox.com
+S: Supported
+F: block/vma.c
+
Image format fuzzer
M: Stefan Hajnoczi <stefanha@redhat.com>
L: qemu-block@nongnu.org
diff --git a/block/Makefile.objs b/block/Makefile.objs
index 823e60cda6..d74140e413 100644
--- a/block/Makefile.objs
+++ b/block/Makefile.objs
@@ -22,6 +22,7 @@ block-obj-$(CONFIG_RBD) += rbd.o
block-obj-$(CONFIG_GLUSTERFS) += gluster.o
block-obj-$(CONFIG_VXHS) += vxhs.o
block-obj-$(CONFIG_LIBSSH2) += ssh.o
+block-obj-$(CONFIG_VMA) += vma.o
block-obj-y += accounting.o dirty-bitmap.o
block-obj-y += write-threshold.o
block-obj-y += backup.o
@@ -48,3 +49,5 @@ block-obj-$(if $(CONFIG_BZIP2),m,n) += dmg-bz2.o
dmg-bz2.o-libs := $(BZIP2_LIBS)
qcow.o-libs := -lz
linux-aio.o-libs := -laio
+vma.o-cflags := $(VMA_CFLAGS)
+vma.o-libs := $(VMA_LIBS)
diff --git a/block/vma.c b/block/vma.c
new file mode 100644
index 0000000000..7151514f94
--- /dev/null
+++ b/block/vma.c
@@ -0,0 +1,424 @@
+/*
+ * VMA archive backend for QEMU, container object
+ *
+ * Copyright (C) 2017 Proxmox Server Solutions GmbH
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+#include <vma/vma.h>
+
+#include "qemu/osdep.h"
+#include "qemu/uuid.h"
+#include "qemu-common.h"
+#include "qapi/error.h"
+#include "qapi/qmp/qerror.h"
+#include "qapi/qmp/qstring.h"
+#include "qom/object.h"
+#include "qom/object_interfaces.h"
+#include "block/block_int.h"
+
+/* exported interface */
+void vma_object_add_config_file(Object *obj, const char *name,
+ const char *contents, size_t len,
+ Error **errp);
+
+#define TYPE_VMA_OBJECT "vma"
+#define VMA_OBJECT(obj) \
+ OBJECT_CHECK(VMAObjectState, (obj), TYPE_VMA_OBJECT)
+#define VMA_OBJECT_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(VMAObjectClass, (obj), TYPE_VMA_OBJECT)
+
+typedef struct VMAObjectClass {
+ ObjectClass parent_class;
+} VMAObjectClass;
+
+typedef struct VMAObjectState {
+ Object parent;
+
+ char *filename;
+
+ QemuUUID uuid;
+ bool blocked;
+ VMAWriter *vma;
+ QemuMutex mutex;
+} VMAObjectState;
+
+static VMAObjectState *vma_by_id(const char *name)
+{
+ Object *container;
+ Object *obj;
+
+ container = object_get_objects_root();
+ obj = object_resolve_path_component(container, name);
+
+ return VMA_OBJECT(obj);
+}
+
+static void vma_object_class_complete(UserCreatable *uc, Error **errp)
+{
+ int rc;
+ VMAObjectState *vo = VMA_OBJECT(uc);
+ VMAObjectClass *voc = VMA_OBJECT_GET_CLASS(uc);
+ (void)!vo;
+ (void)!voc;
+
+ if (!vo->filename) {
+ error_setg(errp, "Parameter 'filename' is required");
+ return;
+ }
+
+ rc = VMAWriter_fopen(vo->filename, &vo->vma);
+ if (rc < 0) {
+ error_setg_errno(errp, -rc, "failed to create VMA archive");
+ return;
+ }
+
+ rc = VMAWriter_set_uuid(vo->vma, vo->uuid.data, sizeof(vo->uuid.data));
+ if (rc < 0) {
+ error_setg_errno(errp, -rc, "failed to set UUID of VMA archive");
+ return;
+ }
+
+ qemu_mutex_init(&vo->mutex);
+}
+
+static bool vma_object_can_be_deleted(UserCreatable *uc, Error **errp)
+{
+ //VMAObjectState *vo = VMA_OBJECT(uc);
+ //if (!vo->vma) {
+ // return true;
+ //}
+ //return false;
+ return true;
+}
+
+static void vma_object_class_init(ObjectClass *oc, void *data)
+{
+ UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
+
+ ucc->can_be_deleted = vma_object_can_be_deleted;
+ ucc->complete = vma_object_class_complete;
+}
+
+static char *vma_object_get_filename(Object *obj, Error **errp)
+{
+ VMAObjectState *vo = VMA_OBJECT(obj);
+
+ return g_strdup(vo->filename);
+}
+
+static void vma_object_set_filename(Object *obj, const char *str, Error **errp)
+{
+ VMAObjectState *vo = VMA_OBJECT(obj);
+
+ if (vo->vma) {
+ error_setg(errp, "filename cannot be changed after creation");
+ return;
+ }
+
+ g_free(vo->filename);
+ vo->filename = g_strdup(str);
+}
+
+static char *vma_object_get_uuid(Object *obj, Error **errp)
+{
+ VMAObjectState *vo = VMA_OBJECT(obj);
+
+ return qemu_uuid_unparse_strdup(&vo->uuid);
+}
+
+static void vma_object_set_uuid(Object *obj, const char *str, Error **errp)
+{
+ VMAObjectState *vo = VMA_OBJECT(obj);
+
+ if (vo->vma) {
+ error_setg(errp, "uuid cannot be changed after creation");
+ return;
+ }
+
+ qemu_uuid_parse(str, &vo->uuid);
+}
+
+static bool vma_object_get_blocked(Object *obj, Error **errp)
+{
+ VMAObjectState *vo = VMA_OBJECT(obj);
+
+ return vo->blocked;
+}
+
+static void vma_object_set_blocked(Object *obj, bool blocked, Error **errp)
+{
+ VMAObjectState *vo = VMA_OBJECT(obj);
+
+ (void)errp;
+
+ vo->blocked = blocked;
+}
+
+void vma_object_add_config_file(Object *obj, const char *name,
+ const char *contents, size_t len,
+ Error **errp)
+{
+ int rc;
+ VMAObjectState *vo = VMA_OBJECT(obj);
+
+ if (!vo || !vo->vma) {
+ error_setg(errp, "not a valid vma object to add config files to");
+ return;
+ }
+
+ rc = VMAWriter_addConfigFile(vo->vma, name, contents, len);
+ if (rc < 0) {
+ error_setg_errno(errp, -rc, "failed to add config file to VMA");
+ return;
+ }
+}
+
+static void vma_object_init(Object *obj)
+{
+ VMAObjectState *vo = VMA_OBJECT(obj);
+ (void)!vo;
+
+ object_property_add_str(obj, "filename",
+ vma_object_get_filename, vma_object_set_filename,
+ NULL);
+ object_property_add_str(obj, "uuid",
+ vma_object_get_uuid, vma_object_set_uuid,
+ NULL);
+ object_property_add_bool(obj, "blocked",
+ vma_object_get_blocked, vma_object_set_blocked,
+ NULL);
+}
+
+static void vma_object_finalize(Object *obj)
+{
+ VMAObjectState *vo = VMA_OBJECT(obj);
+ VMAObjectClass *voc = VMA_OBJECT_GET_CLASS(obj);
+ (void)!voc;
+
+ qemu_mutex_destroy(&vo->mutex);
+
+ VMAWriter_destroy(vo->vma, true);
+ g_free(vo->filename);
+}
+
+static const TypeInfo vma_object_info = {
+ .name = TYPE_VMA_OBJECT,
+ .parent = TYPE_OBJECT,
+ .class_size = sizeof(VMAObjectClass),
+ .class_init = vma_object_class_init,
+ .instance_size = sizeof(VMAObjectState),
+ .instance_init = vma_object_init,
+ .instance_finalize = vma_object_finalize,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_USER_CREATABLE },
+ { }
+ }
+};
+
+static void register_types(void)
+{
+ type_register_static(&vma_object_info);
+}
+
+type_init(register_types);
+
+typedef struct {
+ VMAObjectState *vma_obj;
+ char *name;
+ size_t device_id;
+ uint64_t byte_size;
+} BDRVVMAState;
+
+static void qemu_vma_parse_filename(const char *filename, QDict *options,
+ Error **errp)
+{
+ char *sep;
+
+ sep = strchr(filename, '/');
+ if (!sep || sep == filename) {
+ error_setg(errp, "VMA filename should be <vma-object>/<device-name>");
+ return;
+ }
+
+ qdict_put(options, "vma", qstring_from_substr(filename, 0, sep-filename-1));
+
+ while (*sep && *sep == '/')
+ ++sep;
+ if (!*sep) {
+ error_setg(errp, "missing device name\n");
+ return;
+ }
+
+ qdict_put(options, "name", qstring_from_str(sep));
+}
+
+static QemuOptsList runtime_opts = {
+ .name = "vma-drive",
+ .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
+ .desc = {
+ {
+ .name = "vma",
+ .type = QEMU_OPT_STRING,
+ .help = "VMA Object name",
+ },
+ {
+ .name = "name",
+ .type = QEMU_OPT_STRING,
+ .help = "VMA device name",
+ },
+ {
+ .name = BLOCK_OPT_SIZE,
+ .type = QEMU_OPT_SIZE,
+ .help = "Virtual disk size"
+ },
+ { /* end of list */ }
+ },
+};
+static int qemu_vma_open(BlockDriverState *bs, QDict *options, int flags,
+ Error **errp)
+{
+ Error *local_err = NULL;
+ BDRVVMAState *s = bs->opaque;
+ QemuOpts *opts;
+ const char *vma_id, *device_name;
+ ssize_t dev_id;
+ int64_t bytes = 0;
+ int ret;
+
+ opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
+ qemu_opts_absorb_qdict(opts, options, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto failed_opts;
+ }
+
+ bytes = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+ BDRV_SECTOR_SIZE);
+
+ vma_id = qemu_opt_get(opts, "vma");
+ device_name = qemu_opt_get(opts, "name");
+
+ VMAObjectState *vma = vma_by_id(vma_id);
+ if (!vma) {
+ ret = -EINVAL;
+ error_setg(errp, "no such VMA object: %s", vma_id);
+ goto failed_opts;
+ }
+
+ dev_id = VMAWriter_findDevice(vma->vma, device_name);
+ if (dev_id >= 0) {
+ error_setg(errp, "drive already exists in VMA object");
+ ret = -EIO;
+ goto failed_opts;
+ }
+
+ dev_id = VMAWriter_addDevice(vma->vma, device_name, (uint64_t)bytes);
+ if (dev_id < 0) {
+ error_setg_errno(errp, -dev_id, "failed to add VMA device");
+ ret = -EIO;
+ goto failed_opts;
+ }
+
+ object_ref(OBJECT(vma));
+ s->vma_obj = vma;
+ s->name = g_strdup(device_name);
+ s->device_id = (size_t)dev_id;
+ s->byte_size = bytes;
+
+ ret = 0;
+
+failed_opts:
+ qemu_opts_del(opts);
+ return ret;
+}
+
+static void qemu_vma_close(BlockDriverState *bs)
+{
+ BDRVVMAState *s = bs->opaque;
+
+ (void)VMAWriter_finishDevice(s->vma_obj->vma, s->device_id);
+ object_unref(OBJECT(s->vma_obj));
+
+ g_free(s->name);
+}
+
+static int64_t qemu_vma_getlength(BlockDriverState *bs)
+{
+ BDRVVMAState *s = bs->opaque;
+
+ return s->byte_size;
+}
+
+static coroutine_fn int qemu_vma_co_writev(BlockDriverState *bs,
+ int64_t sector_num,
+ int nb_sectors,
+ QEMUIOVector *qiov)
+{
+ size_t i;
+ ssize_t rc;
+ BDRVVMAState *s = bs->opaque;
+ VMAObjectState *vo = s->vma_obj;
+ off_t offset = sector_num * BDRV_SECTOR_SIZE;
+
+ qemu_mutex_lock(&vo->mutex);
+ if (vo->blocked) {
+ return -EPERM;
+ }
+ for (i = 0; i != qiov->niov; ++i) {
+ const struct iovec *v = &qiov->iov[i];
+ size_t blocks = v->iov_len / VMA_BLOCK_SIZE;
+ if (blocks * VMA_BLOCK_SIZE != v->iov_len) {
+ return -EIO;
+ }
+ rc = VMAWriter_writeBlocks(vo->vma, s->device_id,
+ v->iov_base, blocks, offset);
+ if (errno) {
+ return -errno;
+ }
+ if (rc != blocks) {
+ return -EIO;
+ }
+ offset += v->iov_len;
+ }
+ qemu_mutex_unlock(&vo->mutex);
+ return 0;
+}
+
+static int qemu_vma_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
+{
+ bdi->cluster_size = VMA_CLUSTER_SIZE;
+ bdi->unallocated_blocks_are_zero = true;
+ bdi->can_write_zeroes_with_unmap = false;
+ return 0;
+}
+
+static BlockDriver bdrv_vma_drive = {
+ .format_name = "vma-drive",
+ .instance_size = sizeof(BDRVVMAState),
+
+#if 0
+ .bdrv_create = qemu_vma_create,
+ .create_opts = &qemu_vma_create_opts,
+#endif
+
+ .bdrv_parse_filename = qemu_vma_parse_filename,
+ .bdrv_file_open = qemu_vma_open,
+
+ .bdrv_close = qemu_vma_close,
+ .bdrv_has_zero_init = bdrv_has_zero_init_1,
+ .bdrv_getlength = qemu_vma_getlength,
+ .bdrv_get_info = qemu_vma_get_info,
+
+ .bdrv_co_writev = qemu_vma_co_writev,
+};
+
+static void bdrv_vma_init(void)
+{
+ bdrv_register(&bdrv_vma_drive);
+}
+
+block_init(bdrv_vma_init);
diff --git a/blockdev.c b/blockdev.c
index a9ed9034b5..3ffd064c48 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -31,10 +31,12 @@
*/
#include "qemu/osdep.h"
+#include "qemu/uuid.h"
#include "sysemu/block-backend.h"
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "block/blockjob.h"
+#include "block/blockjob_int.h"
#include "block/throttle-groups.h"
#include "monitor/monitor.h"
#include "qemu/error-report.h"
@@ -2963,6 +2965,540 @@ out:
aio_context_release(aio_context);
}
+/* PVE backup related function */
+
+static struct PVEBackupState {
+ Error *error;
+ bool cancel;
+ QemuUUID uuid;
+ char uuid_str[37];
+ int64_t speed;
+ time_t start_time;
+ time_t end_time;
+ char *backup_file;
+ Object *vmaobj;
+ GList *di_list;
+ size_t next_job;
+ size_t total;
+ size_t transferred;
+ size_t zero_bytes;
+ QemuMutex backup_mutex;
+ bool backup_mutex_initialized;
+} backup_state;
+
+typedef struct PVEBackupDevInfo {
+ BlockDriverState *bs;
+ size_t size;
+ uint8_t dev_id;
+ bool completed;
+ char targetfile[PATH_MAX];
+ BlockDriverState *target;
+} PVEBackupDevInfo;
+
+static void pvebackup_run_next_job(void);
+
+static void pvebackup_cleanup(void)
+{
+ qemu_mutex_lock(&backup_state.backup_mutex);
+ // Avoid race between block jobs and backup-cancel command:
+ if (!backup_state.vmaw) {
+ qemu_mutex_unlock(&backup_state.backup_mutex);
+ return;
+ }
+
+ backup_state.end_time = time(NULL);
+
+ if (backup_state.vmaobj) {
+ object_unparent(backup_state.vmaobj);
+ backup_state.vmaobj = NULL;
+ }
+
+ g_list_free(backup_state.di_list);
+ backup_state.di_list = NULL;
+ qemu_mutex_unlock(&backup_state.backup_mutex);
+}
+
+static void pvebackup_complete_cb(void *opaque, int ret)
+{
+ // This always runs in the main loop
+
+ PVEBackupDevInfo *di = opaque;
+
+ di->completed = true;
+
+ if (ret < 0 && !backup_state.error) {
+ error_setg(&backup_state.error, "job failed with err %d - %s",
+ ret, strerror(-ret));
+ }
+
+ di->bs = NULL;
+ di->target = NULL;
+
+ if (backup_state.vmaobj) {
+ object_unparent(backup_state.vmaobj);
+ backup_state.vmaobj = NULL;
+ }
+
+ // remove self from job queue
+ qemu_mutex_lock(&backup_state.backup_mutex);
+ backup_state.di_list = g_list_remove(backup_state.di_list, di);
+ g_free(di);
+ qemu_mutex_unlock(&backup_state.backup_mutex);
+
+ if (!backup_state.cancel) {
+ pvebackup_run_next_job();
+ }
+}
+
+static void pvebackup_cancel(void *opaque)
+{
+ backup_state.cancel = true;
+ qemu_mutex_lock(&backup_state.backup_mutex);
+ // Avoid race between block jobs and backup-cancel command:
+ if (!backup_state.vmaw) {
+ qemu_mutex_unlock(&backup_state.backup_mutex);
+ return;
+ }
+
+ if (!backup_state.error) {
+ error_setg(&backup_state.error, "backup cancelled");
+ }
+
+ if (backup_state.vmaobj) {
+ Error *err;
+ /* make sure vma writer does not block anymore */
+ if (!object_set_props(backup_state.vmaobj, &err, "blocked", "yes", NULL)) {
+ if (err) {
+ error_report_err(err);
+ }
+ }
+ }
+
+ GList *l = backup_state.di_list;
+ while (l) {
+ PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
+ l = g_list_next(l);
+ if (!di->completed && di->bs) {
+ BlockJob *job = di->bs->job;
+ if (job) {
+ AioContext *aio_context = blk_get_aio_context(job->blk);
+ aio_context_acquire(aio_context);
+ if (!di->completed) {
+ block_job_cancel(job);
+ }
+ aio_context_release(aio_context);
+ }
+ }
+ }
+
+ qemu_mutex_unlock(&backup_state.backup_mutex);
+ pvebackup_cleanup();
+}
+
+void qmp_backup_cancel(Error **errp)
+{
+ if (!backup_state.backup_mutex_initialized)
+ return;
+ Coroutine *co = qemu_coroutine_create(pvebackup_cancel, NULL);
+ qemu_coroutine_enter(co);
+
+ while (backup_state.vmaobj) {
+ /* FIXME: Find something better for this */
+ aio_poll(qemu_get_aio_context(), true);
+ }
+}
+
+void vma_object_add_config_file(Object *obj, const char *name,
+ const char *contents, size_t len,
+ Error **errp);
+static int config_to_vma(const char *file, BackupFormat format,
+ Object *vmaobj,
+ const char *backup_dir,
+ Error **errp)
+{
+ char *cdata = NULL;
+ gsize clen = 0;
+ GError *err = NULL;
+ if (!g_file_get_contents(file, &cdata, &clen, &err)) {
+ error_setg(errp, "unable to read file '%s'", file);
+ return 1;
+ }
+
+ char *basename = g_path_get_basename(file);
+
+ if (format == BACKUP_FORMAT_VMA) {
+ vma_object_add_config_file(vmaobj, basename, cdata, clen, errp);
+ } else if (format == BACKUP_FORMAT_DIR) {
+ char config_path[PATH_MAX];
+ snprintf(config_path, PATH_MAX, "%s/%s", backup_dir, basename);
+ if (!g_file_set_contents(config_path, cdata, clen, &err)) {
+ error_setg(errp, "unable to write config file '%s'", config_path);
+ g_free(cdata);
+ g_free(basename);
+ return 1;
+ }
+ }
+
+ g_free(basename);
+ g_free(cdata);
+ return 0;
+}
+
+void block_job_resume(BlockJob *job);
+static void pvebackup_run_next_job(void)
+{
+ qemu_mutex_lock(&backup_state.backup_mutex);
+
+ GList *next = g_list_nth(backup_state.di_list, backup_state.next_job);
+ while (next) {
+ PVEBackupDevInfo *di = (PVEBackupDevInfo *)next->data;
+ backup_state.next_job++;
+ if (!di->completed && di->bs && di->bs->job) {
+ BlockJob *job = di->bs->job;
+ AioContext *aio_context = blk_get_aio_context(job->blk);
+ aio_context_acquire(aio_context);
+ qemu_mutex_unlock(&backup_state.backup_mutex);
+ if (backup_state.error || backup_state.cancel) {
+ block_job_cancel_sync(job);
+ } else {
+ block_job_resume(job);
+ }
+ aio_context_release(aio_context);
+ return;
+ }
+ next = g_list_next(next);
+ }
+ qemu_mutex_unlock(&backup_state.backup_mutex);
+
+ // no more jobs, run the cleanup
+ pvebackup_cleanup();
+}
+
+UuidInfo *qmp_backup(const char *backup_file, bool has_format,
+ BackupFormat format,
+ bool has_config_file, const char *config_file,
+ bool has_firewall_file, const char *firewall_file,
+ bool has_devlist, const char *devlist,
+ bool has_speed, int64_t speed, Error **errp)
+{
+ BlockBackend *blk;
+ BlockDriverState *bs = NULL;
+ const char *backup_dir = NULL;
+ Error *local_err = NULL;
+ QemuUUID uuid;
+ gchar **devs = NULL;
+ GList *di_list = NULL;
+ GList *l;
+ UuidInfo *uuid_info;
+ BlockJob *job;
+
+ if (!backup_state.backup_mutex_initialized) {
+ qemu_mutex_init(&backup_state.backup_mutex);
+ backup_state.backup_mutex_initialized = true;
+ }
+
+ if (backup_state.di_list || backup_state.vmaobj) {
+ error_set(errp, ERROR_CLASS_GENERIC_ERROR,
+ "previous backup not finished");
+ return NULL;
+ }
+
+ /* Todo: try to auto-detect format based on file name */
+ format = has_format ? format : BACKUP_FORMAT_VMA;
+
+ if (has_devlist) {
+ devs = g_strsplit_set(devlist, ",;:", -1);
+
+ gchar **d = devs;
+ while (d && *d) {
+ blk = blk_by_name(*d);
+ if (blk) {
+ bs = blk_bs(blk);
+ if (bdrv_is_read_only(bs)) {
+ error_setg(errp, "Node '%s' is read only", *d);
+ goto err;
+ }
+ if (!bdrv_is_inserted(bs)) {
+ error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, *d);
+ goto err;
+ }
+ PVEBackupDevInfo *di = g_new0(PVEBackupDevInfo, 1);
+ di->bs = bs;
+ di_list = g_list_append(di_list, di);
+ } else {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", *d);
+ goto err;
+ }
+ d++;
+ }
+
+ } else {
+ BdrvNextIterator it;
+
+ bs = NULL;
+ for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
+ if (!bdrv_is_inserted(bs) || bdrv_is_read_only(bs)) {
+ continue;
+ }
+
+ PVEBackupDevInfo *di = g_new0(PVEBackupDevInfo, 1);
+ di->bs = bs;
+ di_list = g_list_append(di_list, di);
+ }
+ }
+
+ if (!di_list) {
+ error_set(errp, ERROR_CLASS_GENERIC_ERROR, "empty device list");
+ goto err;
+ }
+
+ size_t total = 0;
+
+ l = di_list;
+ while (l) {
+ PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
+ l = g_list_next(l);
+ if (bdrv_op_is_blocked(di->bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) {
+ goto err;
+ }
+
+ ssize_t size = bdrv_getlength(di->bs);
+ if (size < 0) {
+ error_setg_errno(errp, -di->size, "bdrv_getlength failed");
+ goto err;
+ }
+ di->size = size;
+ total += size;
+ }
+
+ qemu_uuid_generate(&uuid);
+
+ if (format == BACKUP_FORMAT_VMA) {
+ char uuidstr[UUID_FMT_LEN+1];
+ qemu_uuid_unparse(&uuid, uuidstr);
+ uuidstr[UUID_FMT_LEN] = 0;
+ backup_state.vmaobj =
+ object_new_with_props("vma", object_get_objects_root(),
+ "vma-backup-obj", &local_err,
+ "filename", backup_file,
+ "uuid", uuidstr,
+ NULL);
+ if (!backup_state.vmaobj) {
+ if (local_err) {
+ error_propagate(errp, local_err);
+ }
+ goto err;
+ }
+
+ l = di_list;
+ while (l) {
+ QDict *options = qdict_new();
+
+ PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
+ l = g_list_next(l);
+
+ const char *devname = bdrv_get_device_name(di->bs);
+ snprintf(di->targetfile, PATH_MAX, "vma-backup-obj/%s.raw", devname);
+
+ qdict_put(options, "driver", qstring_from_str("vma-drive"));
+ qdict_put(options, "size", qint_from_int(di->size));
+ di->target = bdrv_open(di->targetfile, NULL, options, BDRV_O_RDWR, &local_err);
+ if (!di->target) {
+ error_propagate(errp, local_err);
+ goto err;
+ }
+ }
+ } else if (format == BACKUP_FORMAT_DIR) {
+ if (mkdir(backup_file, 0640) != 0) {
+ error_setg_errno(errp, errno, "can't create directory '%s'\n",
+ backup_file);
+ goto err;
+ }
+ backup_dir = backup_file;
+
+ l = di_list;
+ while (l) {
+ PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
+ l = g_list_next(l);
+
+ const char *devname = bdrv_get_device_name(di->bs);
+ snprintf(di->targetfile, PATH_MAX, "%s/%s.raw", backup_dir, devname);
+
+ int flags = BDRV_O_RDWR;
+ bdrv_img_create(di->targetfile, "raw", NULL, NULL, NULL,
+ di->size, flags, false, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto err;
+ }
+
+ di->target = bdrv_open(di->targetfile, NULL, NULL, flags, &local_err);
+ if (!di->target) {
+ error_propagate(errp, local_err);
+ goto err;
+ }
+ }
+ } else {
+ error_set(errp, ERROR_CLASS_GENERIC_ERROR, "unknown backup format");
+ goto err;
+ }
+
+ /* add configuration file to archive */
+ if (has_config_file) {
+ if(config_to_vma(config_file, format, backup_state.vmaobj, backup_dir, errp) != 0) {
+ goto err;
+ }
+ }
+
+ /* add firewall file to archive */
+ if (has_firewall_file) {
+ if(config_to_vma(firewall_file, format, backup_state.vmaobj, backup_dir, errp) != 0) {
+ goto err;
+ }
+ }
+ /* initialize global backup_state now */
+
+ backup_state.cancel = false;
+
+ if (backup_state.error) {
+ error_free(backup_state.error);
+ backup_state.error = NULL;
+ }
+
+ backup_state.speed = (has_speed && speed > 0) ? speed : 0;
+
+ backup_state.start_time = time(NULL);
+ backup_state.end_time = 0;
+
+ if (backup_state.backup_file) {
+ g_free(backup_state.backup_file);
+ }
+ backup_state.backup_file = g_strdup(backup_file);
+
+ memcpy(&backup_state.uuid, &uuid, sizeof(uuid));
+ qemu_uuid_unparse(&uuid, backup_state.uuid_str);
+
+ qemu_mutex_lock(&backup_state.backup_mutex);
+ backup_state.di_list = di_list;
+ backup_state.next_job = 0;
+
+ backup_state.total = total;
+ backup_state.transferred = 0;
+ backup_state.zero_bytes = 0;
+
+ /* start all jobs (paused state) */
+ l = di_list;
+ while (l) {
+ PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
+ l = g_list_next(l);
+
+ job = backup_job_create(NULL, di->bs, di->target, speed, MIRROR_SYNC_MODE_FULL, NULL,
+ false, BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT,
+ BLOCK_JOB_DEFAULT,
+ pvebackup_complete_cb, di, 2, NULL, &local_err);
+ if (di->target) {
+ bdrv_unref(di->target);
+ di->target = NULL;
+ }
+ if (!job || local_err != NULL) {
+ error_setg(&backup_state.error, "backup_job_create failed");
+ pvebackup_cancel(NULL);
+ } else {
+ block_job_start(job);
+ }
+ }
+
+ qemu_mutex_unlock(&backup_state.backup_mutex);
+
+ if (!backup_state.error) {
+ pvebackup_run_next_job(); // run one job
+ }
+
+ uuid_info = g_malloc0(sizeof(*uuid_info));
+ uuid_info->UUID = g_strdup(backup_state.uuid_str);
+
+ return uuid_info;
+
+err:
+
+ l = di_list;
+ while (l) {
+ PVEBackupDevInfo *di = (PVEBackupDevInfo *)l->data;
+ l = g_list_next(l);
+
+ if (di->target) {
+ bdrv_unref(di->target);
+ }
+
+ if (di->targetfile[0]) {
+ unlink(di->targetfile);
+ }
+ g_free(di);
+ }
+ g_list_free(di_list);
+
+ if (devs) {
+ g_strfreev(devs);
+ }
+
+ if (backup_state.vmaobj) {
+ object_unparent(backup_state.vmaobj);
+ backup_state.vmaobj = NULL;
+ }
+
+ if (backup_dir) {
+ rmdir(backup_dir);
+ }
+
+ return NULL;
+}
+
+BackupStatus *qmp_query_backup(Error **errp)
+{
+ BackupStatus *info = g_malloc0(sizeof(*info));
+
+ if (!backup_state.start_time) {
+ /* not started, return {} */
+ return info;
+ }
+
+ info->has_status = true;
+ info->has_start_time = true;
+ info->start_time = backup_state.start_time;
+
+ if (backup_state.backup_file) {
+ info->has_backup_file = true;
+ info->backup_file = g_strdup(backup_state.backup_file);
+ }
+
+ info->has_uuid = true;
+ info->uuid = g_strdup(backup_state.uuid_str);
+
+ if (backup_state.end_time) {
+ if (backup_state.error) {
+ info->status = g_strdup("error");
+ info->has_errmsg = true;
+ info->errmsg = g_strdup(error_get_pretty(backup_state.error));
+ } else {
+ info->status = g_strdup("done");
+ }
+ info->has_end_time = true;
+ info->end_time = backup_state.end_time;
+ } else {
+ info->status = g_strdup("active");
+ }
+
+ info->has_total = true;
+ info->total = backup_state.total;
+ info->has_zero_bytes = true;
+ info->zero_bytes = backup_state.zero_bytes;
+ info->has_transferred = true;
+ info->transferred = backup_state.transferred;
+
+ return info;
+}
+
void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
bool has_base, const char *base,
bool has_base_node, const char *base_node,
diff --git a/blockjob.c b/blockjob.c
index c1b6b6a810..2de9f8f4dd 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -149,7 +149,8 @@ static void block_job_pause(BlockJob *job)
job->pause_count++;
}
-static void block_job_resume(BlockJob *job)
+void block_job_resume(BlockJob *job);
+void block_job_resume(BlockJob *job)
{
assert(job->pause_count > 0);
job->pause_count--;
diff --git a/configure b/configure
index 0c6e7572db..3a28a0a092 100755
--- a/configure
+++ b/configure
@@ -422,6 +422,7 @@ tcmalloc="no"
jemalloc="no"
replication="yes"
vxhs=""
+vma=""
supported_cpu="no"
supported_os="no"
@@ -1313,6 +1314,10 @@ for opt do
;;
--disable-git-update) git_update=no
;;
+ --disable-vma) vma="no"
+ ;;
+ --enable-vma) vma="yes"
+ ;;
*)
echo "ERROR: unknown option $opt"
echo "Try '$0 --help' for more information"
@@ -1561,6 +1566,7 @@ disabled with --disable-FEATURE, default is enabled if available:
crypto-afalg Linux AF_ALG crypto backend driver
vhost-user vhost-user support
capstone capstone disassembler support
+ vma VMA archive backend
NOTE: The object files are built at the place where configure is launched
EOF
@@ -3890,6 +3896,23 @@ EOF
fi
##########################################
+# vma probe
+if test "$vma" != "no" ; then
+ if $pkg_config --exact-version=0.1.0 vma; then
+ vma="yes"
+ vma_cflags=$($pkg_config --cflags vma)
+ vma_libs=$($pkg_config --libs vma)
+ else
+ if test "$vma" = "yes" ; then
+ feature_not_found "VMA Archive backend support" \
+ "Install libvma devel"
+ fi
+ vma="no"
+ fi
+fi
+
+
+##########################################
# signalfd probe
signalfd="no"
cat > $TMPC << EOF
@@ -5555,6 +5578,7 @@ echo "avx2 optimization $avx2_opt"
echo "replication support $replication"
echo "VxHS block device $vxhs"
echo "capstone $capstone"
+echo "VMA support $vma"
if test "$sdl_too_old" = "yes"; then
echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -5998,6 +6022,12 @@ if test "$libusb" = "yes" ; then
echo "LIBUSB_LIBS=$libusb_libs" >> $config_host_mak
fi
+if test "$vma" = "yes" ; then
+ echo "CONFIG_VMA=y" >> $config_host_mak
+ echo "VMA_CFLAGS=$vma_cflags" >> $config_host_mak
+ echo "VMA_LIBS=$vma_libs" >> $config_host_mak
+fi
+
if test "$usb_redir" = "yes" ; then
echo "CONFIG_USB_REDIR=y" >> $config_host_mak
echo "USB_REDIR_CFLAGS=$usb_redir_cflags" >> $config_host_mak
diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index 3bf69a193c..7beeb29e99 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -493,6 +493,19 @@ STEXI
Show CPU statistics.
ETEXI
+ {
+ .name = "backup",
+ .args_type = "",
+ .params = "",
+ .help = "show backup status",
+ .cmd = hmp_info_backup,
+ },
+
+STEXI
+@item info backup
+show backup status
+ETEXI
+
#if defined(CONFIG_SLIRP)
{
.name = "usernet",
diff --git a/hmp-commands.hx b/hmp-commands.hx
index b35bc6ab6c..9e50947845 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -87,6 +87,37 @@ STEXI
Copy data from a backing file into a block device.
ETEXI
+ {
+ .name = "backup",
+ .args_type = "directory:-d,backupfile:s,speed:o?,devlist:s?",
+ .params = "[-d] backupfile [speed [devlist]]",
+ .help = "create a VM Backup."
+ "\n\t\t\t Use -d to dump data into a directory instead"
+ "\n\t\t\t of using VMA format.",
+ .cmd = hmp_backup,
+ },
+
+STEXI
+@item backup
+@findex backup
+Create a VM backup.
+ETEXI
+
+ {
+ .name = "backup_cancel",
+ .args_type = "",
+ .params = "",
+ .help = "cancel the current VM backup",
+ .cmd = hmp_backup_cancel,
+ },
+
+STEXI
+@item backup_cancel
+@findex backup_cancel
+Cancel the current VM backup.
+
+ETEXI
+
{
.name = "block_job_set_speed",
.args_type = "device:B,speed:o",
diff --git a/hmp.c b/hmp.c
index b9ade681f0..241c2543ec 100644
--- a/hmp.c
+++ b/hmp.c
@@ -156,6 +156,44 @@ void hmp_info_mice(Monitor *mon, const QDict *qdict)
qapi_free_MouseInfoList(mice_list);
}
+void hmp_info_backup(Monitor *mon, const QDict *qdict)
+{
+ BackupStatus *info;
+
+ info = qmp_query_backup(NULL);
+ if (info->has_status) {
+ if (info->has_errmsg) {
+ monitor_printf(mon, "Backup status: %s - %s\n",
+ info->status, info->errmsg);
+ } else {
+ monitor_printf(mon, "Backup status: %s\n", info->status);
+ }
+ }
+
+ if (info->has_backup_file) {
+ monitor_printf(mon, "Start time: %s", ctime(&info->start_time));
+ if (info->end_time) {
+ monitor_printf(mon, "End time: %s", ctime(&info->end_time));
+ }
+
+ int per = (info->has_total && info->total &&
+ info->has_transferred && info->transferred) ?
+ (info->transferred * 100)/info->total : 0;
+ int zero_per = (info->has_total && info->total &&
+ info->has_zero_bytes && info->zero_bytes) ?
+ (info->zero_bytes * 100)/info->total : 0;
+ monitor_printf(mon, "Backup file: %s\n", info->backup_file);
+ monitor_printf(mon, "Backup uuid: %s\n", info->uuid);
+ monitor_printf(mon, "Total size: %zd\n", info->total);
+ monitor_printf(mon, "Transferred bytes: %zd (%d%%)\n",
+ info->transferred, per);
+ monitor_printf(mon, "Zero bytes: %zd (%d%%)\n",
+ info->zero_bytes, zero_per);
+ }
+
+ qapi_free_BackupStatus(info);
+}
+
void hmp_info_migrate(Monitor *mon, const QDict *qdict)
{
MigrationInfo *info;
@@ -1848,6 +1886,31 @@ void hmp_block_stream(Monitor *mon, const QDict *qdict)
hmp_handle_error(mon, &error);
}
+void hmp_backup_cancel(Monitor *mon, const QDict *qdict)
+{
+ Error *error = NULL;
+
+ qmp_backup_cancel(&error);
+
+ hmp_handle_error(mon, &error);
+}
+
+void hmp_backup(Monitor *mon, const QDict *qdict)
+{
+ Error *error = NULL;
+
+ int dir = qdict_get_try_bool(qdict, "directory", 0);
+ const char *backup_file = qdict_get_str(qdict, "backupfile");
+ const char *devlist = qdict_get_try_str(qdict, "devlist");
+ int64_t speed = qdict_get_try_int(qdict, "speed", 0);
+
+ qmp_backup(backup_file, true, dir ? BACKUP_FORMAT_DIR : BACKUP_FORMAT_VMA,
+ false, NULL, false, NULL, !!devlist,
+ devlist, qdict_haskey(qdict, "speed"), speed, &error);
+
+ hmp_handle_error(mon, &error);
+}
+
void hmp_block_job_set_speed(Monitor *mon, const QDict *qdict)
{
Error *error = NULL;
diff --git a/hmp.h b/hmp.h
index 45ada581b6..635b9b4218 100644
--- a/hmp.h
+++ b/hmp.h
@@ -31,6 +31,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict);
void hmp_info_migrate_capabilities(Monitor *mon, const QDict *qdict);
void hmp_info_migrate_parameters(Monitor *mon, const QDict *qdict);
void hmp_info_migrate_cache_size(Monitor *mon, const QDict *qdict);
+void hmp_info_backup(Monitor *mon, const QDict *qdict);
void hmp_info_cpus(Monitor *mon, const QDict *qdict);
void hmp_info_block(Monitor *mon, const QDict *qdict);
void hmp_info_blockstats(Monitor *mon, const QDict *qdict);
@@ -85,6 +86,8 @@ void hmp_eject(Monitor *mon, const QDict *qdict);
void hmp_change(Monitor *mon, const QDict *qdict);
void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict);
void hmp_block_stream(Monitor *mon, const QDict *qdict);
+void hmp_backup(Monitor *mon, const QDict *qdict);
+void hmp_backup_cancel(Monitor *mon, const QDict *qdict);
void hmp_block_job_set_speed(Monitor *mon, const QDict *qdict);
void hmp_block_job_cancel(Monitor *mon, const QDict *qdict);
void hmp_block_job_pause(Monitor *mon, const QDict *qdict);
diff --git a/qapi/block-core.json b/qapi/block-core.json
index dd763dcf87..461fca9a3d 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -615,6 +615,97 @@
##
+# @BackupStatus:
+#
+# Detailed backup status.
+#
+# @status: string describing the current backup status.
+# This can be 'active', 'done', 'error'. If this field is not
+# returned, no backup process has been initiated
+#
+# @errmsg: error message (only returned if status is 'error')
+#
+# @total: total amount of bytes involved in the backup process
+#
+# @transferred: amount of bytes already backed up.
+#
+# @zero-bytes: amount of 'zero' bytes detected.
+#
+# @start-time: time (epoch) when backup job started.
+#
+# @end-time: time (epoch) when backup job finished.
+#
+# @backup-file: backup file name
+#
+# @uuid: uuid for this backup job
+#
+##
+{ 'struct': 'BackupStatus',
+ 'data': {'*status': 'str', '*errmsg': 'str', '*total': 'int',
+ '*transferred': 'int', '*zero-bytes': 'int',
+ '*start-time': 'int', '*end-time': 'int',
+ '*backup-file': 'str', '*uuid': 'str' } }
+
+##
+# @BackupFormat:
+#
+# An enumeration of supported backup formats.
+#
+# @vma: Proxmox vma backup format
+##
+{ 'enum': 'BackupFormat',
+ 'data': [ 'vma', 'dir' ] }
+
+##
+# @backup:
+#
+# Starts a VM backup.
+#
+# @backup-file: the backup file name
+#
+# @format: format of the backup file
+#
+# @config-file: a configuration file to include into
+# the backup archive.
+#
+# @speed: the maximum speed, in bytes per second
+#
+# @devlist: list of block device names (separated by ',', ';'
+# or ':'). By default the backup includes all writable block devices.
+#
+# Returns: the uuid of the backup job
+#
+##
+{ 'command': 'backup', 'data': { 'backup-file': 'str',
+ '*format': 'BackupFormat',
+ '*config-file': 'str',
+ '*firewall-file': 'str',
+ '*devlist': 'str', '*speed': 'int' },
+ 'returns': 'UuidInfo' }
+
+##
+# @query-backup:
+#
+# Returns information about current/last backup task.
+#
+# Returns: @BackupStatus
+#
+##
+{ 'command': 'query-backup', 'returns': 'BackupStatus' }
+
+##
+# @backup-cancel:
+#
+# Cancel the current executing backup process.
+#
+# Returns: nothing on success
+#
+# Notes: This command succeeds even if there is no backup process running.
+#
+##
+{ 'command': 'backup-cancel' }
+
+##
# @BlockDeviceTimedStats:
#
# Statistics of a block device during a given interval of time.
@@ -2239,7 +2330,7 @@
'host_device', 'http', 'https', 'iscsi', 'luks', 'nbd', 'nfs',
'null-aio', 'null-co', 'parallels', 'qcow', 'qcow2', 'qed',
'quorum', 'raw', 'rbd', 'replication', 'sheepdog', 'ssh',
- 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat', 'vxhs' ] }
+ 'throttle', 'vdi', 'vhdx', 'vma-drive', 'vmdk', 'vpc', 'vvfat', 'vxhs' ] }
##
# @BlockdevOptionsFile:
@@ -3116,6 +3207,21 @@
'*tls-creds': 'str' } }
##
+# @BlockdevOptionsVMADrive:
+#
+# Driver specific block device options for VMA Drives
+#
+# @filename: vma-drive path
+#
+# @size: drive size in bytes
+#
+# Since: 2.9
+##
+{ 'struct': 'BlockdevOptionsVMADrive',
+ 'data': { 'filename': 'str',
+ 'size': 'int' } }
+
+##
# @BlockdevOptionsThrottle:
#
# Driver specific block device options for the throttle driver
@@ -3196,6 +3302,7 @@
'throttle': 'BlockdevOptionsThrottle',
'vdi': 'BlockdevOptionsGenericFormat',
'vhdx': 'BlockdevOptionsGenericFormat',
+ 'vma-drive': 'BlockdevOptionsVMADrive',
'vmdk': 'BlockdevOptionsGenericCOWFormat',
'vpc': 'BlockdevOptionsGenericFormat',
'vvfat': 'BlockdevOptionsVVFAT',
--
2.11.0
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