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backup: Add 'job-id' parameter to 'blockdev-backup' and 'drive-backup' 

This patch adds a new optional 'job-id' parameter to 'blockdev-backup'
and 'drive-backup', allowing the user to specify the ID of the block
job to be created.

The HMP 'drive_backup' command remains unchanged.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2016-07-05 17:28:58 +03:00 committed by Kevin Wolf
parent 71aa98678c
commit 70559d499c
6 changed files with 50 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
block/backup.c
View File

@ -474,9 +474,9 @@ static void coroutine_fn backup_run(void *opaque)
block_job_defer_to_main_loop(&job->common, backup_complete, data);
}
void backup_start(BlockDriverState *bs, BlockDriverState *target,
int64_t speed, MirrorSyncMode sync_mode,
BdrvDirtyBitmap *sync_bitmap,
void backup_start(const char *job_id, BlockDriverState *bs,
BlockDriverState *target, int64_t speed,
MirrorSyncMode sync_mode, BdrvDirtyBitmap *sync_bitmap,
BlockdevOnError on_source_error,
BlockdevOnError on_target_error,
BlockCompletionFunc *cb, void *opaque,
@ -541,7 +541,7 @@ void backup_start(BlockDriverState *bs, BlockDriverState *target,
goto error;
}
job = block_job_create(NULL, &backup_job_driver, bs, speed,
job = block_job_create(job_id, &backup_job_driver, bs, speed,
cb, opaque, errp);
if (!job) {
goto error;

43
blockdev.c
View File

@ -1836,9 +1836,9 @@ typedef struct DriveBackupState {
BlockJob *job;
} DriveBackupState;
static void do_drive_backup(const char *device, const char *target,
bool has_format, const char *format,
enum MirrorSyncMode sync,
static void do_drive_backup(const char *job_id, const char *device,
const char *target, bool has_format,
const char *format, enum MirrorSyncMode sync,
bool has_mode, enum NewImageMode mode,
bool has_speed, int64_t speed,
bool has_bitmap, const char *bitmap,
@ -1876,7 +1876,8 @@ static void drive_backup_prepare(BlkActionState *common, Error **errp)
bdrv_drained_begin(blk_bs(blk));
state->bs = blk_bs(blk);
do_drive_backup(backup->device, backup->target,
do_drive_backup(backup->has_job_id ? backup->job_id : NULL,
backup->device, backup->target,
backup->has_format, backup->format,
backup->sync,
backup->has_mode, backup->mode,
@ -1921,8 +1922,8 @@ typedef struct BlockdevBackupState {
AioContext *aio_context;
} BlockdevBackupState;
static void do_blockdev_backup(const char *device, const char *target,
enum MirrorSyncMode sync,
static void do_blockdev_backup(const char *job_id, const char *device,
const char *target, enum MirrorSyncMode sync,
bool has_speed, int64_t speed,
bool has_on_source_error,
BlockdevOnError on_source_error,
@ -1968,8 +1969,8 @@ static void blockdev_backup_prepare(BlkActionState *common, Error **errp)
state->bs = blk_bs(blk);
bdrv_drained_begin(state->bs);
do_blockdev_backup(backup->device, backup->target,
backup->sync,
do_blockdev_backup(backup->has_job_id ? backup->job_id : NULL,
backup->device, backup->target, backup->sync,
backup->has_speed, backup->speed,
backup->has_on_source_error, backup->on_source_error,
backup->has_on_target_error, backup->on_target_error,
@ -3182,9 +3183,9 @@ out:
aio_context_release(aio_context);
}
static void do_drive_backup(const char *device, const char *target,
bool has_format, const char *format,
enum MirrorSyncMode sync,
static void do_drive_backup(const char *job_id, const char *device,
const char *target, bool has_format,
const char *format, enum MirrorSyncMode sync,
bool has_mode, enum NewImageMode mode,
bool has_speed, int64_t speed,
bool has_bitmap, const char *bitmap,
@ -3303,7 +3304,7 @@ static void do_drive_backup(const char *device, const char *target,
}
}
backup_start(bs, target_bs, speed, sync, bmap,
backup_start(job_id, bs, target_bs, speed, sync, bmap,
on_source_error, on_target_error,
block_job_cb, bs, txn, &local_err);
bdrv_unref(target_bs);
@ -3316,7 +3317,8 @@ out:
aio_context_release(aio_context);
}
void qmp_drive_backup(const char *device, const char *target,
void qmp_drive_backup(bool has_job_id, const char *job_id,
const char *device, const char *target,
bool has_format, const char *format,
enum MirrorSyncMode sync,
bool has_mode, enum NewImageMode mode,
@ -3326,7 +3328,8 @@ void qmp_drive_backup(const char *device, const char *target,
bool has_on_target_error, BlockdevOnError on_target_error,
Error **errp)
{
return do_drive_backup(device, target, has_format, format, sync,
return do_drive_backup(has_job_id ? job_id : NULL, device, target,
has_format, format, sync,
has_mode, mode, has_speed, speed,
has_bitmap, bitmap,
has_on_source_error, on_source_error,
@ -3339,8 +3342,8 @@ BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp)
return bdrv_named_nodes_list(errp);
}
void do_blockdev_backup(const char *device, const char *target,
enum MirrorSyncMode sync,
void do_blockdev_backup(const char *job_id, const char *device,
const char *target, enum MirrorSyncMode sync,
bool has_speed, int64_t speed,
bool has_on_source_error,
BlockdevOnError on_source_error,
@ -3395,7 +3398,7 @@ void do_blockdev_backup(const char *device, const char *target,
goto out;
}
}
backup_start(bs, target_bs, speed, sync, NULL, on_source_error,
backup_start(job_id, bs, target_bs, speed, sync, NULL, on_source_error,
on_target_error, block_job_cb, bs, txn, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
@ -3404,7 +3407,8 @@ out:
aio_context_release(aio_context);
}
void qmp_blockdev_backup(const char *device, const char *target,
void qmp_blockdev_backup(bool has_job_id, const char *job_id,
const char *device, const char *target,
enum MirrorSyncMode sync,
bool has_speed, int64_t speed,
bool has_on_source_error,
@ -3413,7 +3417,8 @@ void qmp_blockdev_backup(const char *device, const char *target,
BlockdevOnError on_target_error,
Error **errp)
{
do_blockdev_backup(device, target, sync, has_speed, speed,
do_blockdev_backup(has_job_id ? job_id : NULL, device, target,
sync, has_speed, speed,
has_on_source_error, on_source_error,
has_on_target_error, on_target_error,
NULL, errp);

2
hmp.c
View File

@ -1127,7 +1127,7 @@ void hmp_drive_backup(Monitor *mon, const QDict *qdict)
mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
}
qmp_drive_backup(device, filename, !!format, format,
qmp_drive_backup(false, NULL, device, filename, !!format, format,
full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP,
true, mode, false, 0, false, NULL,
false, 0, false, 0, &err);

8
include/block/block_int.h
View File

@ -732,6 +732,8 @@ void mirror_start(const char *job_id, BlockDriverState *bs,
/*
* backup_start:
* @job_id: The id of the newly-created job, or %NULL to use the
* device name of @bs.
* @bs: Block device to operate on.
* @target: Block device to write to.
* @speed: The maximum speed, in bytes per second, or 0 for unlimited.
@ -746,9 +748,9 @@ void mirror_start(const char *job_id, BlockDriverState *bs,
* Start a backup operation on @bs. Clusters in @bs are written to @target
* until the job is cancelled or manually completed.
*/
void backup_start(BlockDriverState *bs, BlockDriverState *target,
int64_t speed, MirrorSyncMode sync_mode,
BdrvDirtyBitmap *sync_bitmap,
void backup_start(const char *job_id, BlockDriverState *bs,
BlockDriverState *target, int64_t speed,
MirrorSyncMode sync_mode, BdrvDirtyBitmap *sync_bitmap,
BlockdevOnError on_source_error,
BlockdevOnError on_target_error,
BlockCompletionFunc *cb, void *opaque,

12
qapi/block-core.json
View File

@ -866,6 +866,9 @@
##
# @DriveBackup
#
# @job-id: #optional identifier for the newly-created block job. If
# omitted, the device name will be used. (Since 2.7)
#
# @device: the name of the device which should be copied.
#
# @target: the target of the new image. If the file exists, or if it
@ -903,8 +906,8 @@
# Since: 1.6
##
{ 'struct': 'DriveBackup',
'data': { 'device': 'str', 'target': 'str', '*format': 'str',
'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
'*format': 'str', 'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
'*speed': 'int', '*bitmap': 'str',
'*on-source-error': 'BlockdevOnError',
'*on-target-error': 'BlockdevOnError' } }
@ -912,6 +915,9 @@
##
# @BlockdevBackup
#
# @job-id: #optional identifier for the newly-created block job. If
# omitted, the device name will be used. (Since 2.7)
#
# @device: the name of the device which should be copied.
#
# @target: the name of the backup target device.
@ -938,7 +944,7 @@
# Since: 2.3
##
{ 'struct': 'BlockdevBackup',
'data': { 'device': 'str', 'target': 'str',
'data': { '*job-id': 'str', 'device': 'str', 'target': 'str',
'sync': 'MirrorSyncMode',
'*speed': 'int',
'*on-source-error': 'BlockdevOnError',

10
qmp-commands.hx
View File

@ -1212,8 +1212,8 @@ EQMP
{
.name = "drive-backup",
.args_type = "sync:s,device:B,target:s,speed:i?,mode:s?,format:s?,"
"bitmap:s?,on-source-error:s?,on-target-error:s?",
.args_type = "job-id:s?,sync:s,device:B,target:s,speed:i?,mode:s?,"
"format:s?,bitmap:s?,on-source-error:s?,on-target-error:s?",
.mhandler.cmd_new = qmp_marshal_drive_backup,
},
@ -1229,6 +1229,8 @@ block-job-cancel command.
Arguments:
- "job-id": Identifier for the newly-created block job. If omitted,
the device name will be used. (json-string, optional)
- "device": the name of the device which should be copied.
(json-string)
- "target": the target of the new image. If the file exists, or if it is a
@ -1266,7 +1268,7 @@ EQMP
{
.name = "blockdev-backup",
.args_type = "sync:s,device:B,target:B,speed:i?,"
.args_type = "job-id:s?,sync:s,device:B,target:B,speed:i?,"
"on-source-error:s?,on-target-error:s?",
.mhandler.cmd_new = qmp_marshal_blockdev_backup,
},
@ -1280,6 +1282,8 @@ as backup target.
Arguments:
- "job-id": Identifier for the newly-created block job. If omitted,
the device name will be used. (json-string, optional)
- "device": the name of the device which should be copied.
(json-string)
- "target": the name of the backup target device. (json-string)