diff options
| author | Stefan Hajnoczi <stefanha@redhat.com> | 2013-06-24 17:13:17 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-06-28 09:20:27 +0200 |
| commit | 3037f36446eb3556c14757ac468463c3902f331b (patch) | |
| tree | 35ad7860c316ec6b2de8d9a63a56cab2620e69a4 /qapi-schema.json | |
| parent | f9ea81e82519f44071b3dd617de98f0d6d6cca0a (diff) | |
blockdev: add DriveBackup transaction
This patch adds a transactional version of the drive-backup QMP command.
It allows atomic snapshots of multiple drives along with automatic
cleanup if there is a failure to start one of the backup jobs.
Note that QMP events are emitted for block job completion/cancellation
and the block job will be listed by query-block-jobs.
@device: the name of the device whose writes should be mirrored.
@target: the target of the new image. If the file exists, or if it
is a device, the existing file/device will be used as the new
destination. If it does not exist, a new file will be created.
@format: #optional the format of the new destination, default is to
probe if @mode is 'existing', else the format of the source
@mode: #optional whether and how QEMU should create a new image, default is
'absolute-paths'.
@speed: #optional the maximum speed, in bytes per second
@on-source-error: #optional the action to take on an error on the source,
default 'report'. 'stop' and 'enospc' can only be used
if the block device supports io-status (see BlockInfo).
@on-target-error: #optional the action to take on an error on the target,
default 'report' (no limitations, since this applies to
a different block device than @device).
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qapi-schema.json')
| -rw-r--r-- | qapi-schema.json | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/qapi-schema.json b/qapi-schema.json index 6fe7efc65a..714108dc12 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -1623,6 +1623,43 @@ '*mode': 'NewImageMode' } } ## +# @DriveBackup +# +# @device: the name of the device which should be copied. +# +# @target: the target of the new image. If the file exists, or if it +# is a device, the existing file/device will be used as the new +# destination. If it does not exist, a new file will be created. +# +# @format: #optional the format of the new destination, default is to +# probe if @mode is 'existing', else the format of the source +# +# @mode: #optional whether and how QEMU should create a new image, default is +# 'absolute-paths'. +# +# @speed: #optional the maximum speed, in bytes per second +# +# @on-source-error: #optional the action to take on an error on the source, +# default 'report'. 'stop' and 'enospc' can only be used +# if the block device supports io-status (see BlockInfo). +# +# @on-target-error: #optional the action to take on an error on the target, +# default 'report' (no limitations, since this applies to +# a different block device than @device). +# +# Note that @on-source-error and @on-target-error only affect background I/O. +# If an error occurs during a guest write request, the device's rerror/werror +# actions will be used. +# +# Since: 1.6 +## +{ 'type': 'DriveBackup', + 'data': { 'device': 'str', 'target': 'str', '*format': 'str', + '*mode': 'NewImageMode', '*speed': 'int', + '*on-source-error': 'BlockdevOnError', + '*on-target-error': 'BlockdevOnError' } } + +## # @TransactionAction # # A discriminated record of operations that can be performed with @@ -1630,7 +1667,8 @@ ## { 'union': 'TransactionAction', 'data': { - 'blockdev-snapshot-sync': 'BlockdevSnapshot' + 'blockdev-snapshot-sync': 'BlockdevSnapshot', + 'drive-backup': 'DriveBackup' } } ## |