diff options
| author | Fam Zheng <famz@redhat.com> | 2015-12-24 12:45:05 +0800 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2016-01-07 21:30:18 +0100 |
| commit | df92562e68d6676a52faeaf20e87526ceaa28003 (patch) | |
| tree | 2e9ccdcd2a48a581be67f04f694fa90d040e1392 /qapi | |
| parent | e40e5027f6b0b7e981c4f1844180fb0e7947d1cd (diff) | |
qmp: Add blockdev-mirror command
This will start a mirror job from a named device to another named
device, its relation with drive-mirror is similar with blockdev-backup
to drive-backup.
In blockdev-mirror, the target node should be prepared by blockdev-add,
which will be responsible for assigning a name to the new node, so
we don't have 'node-name' parameter.
Signed-off-by: Fam Zheng <famz@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1450932306-13717-5-git-send-email-famz@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/block-core.json | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 1a5d9ce9bb..0a915eda59 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1184,6 +1184,54 @@ 'data': 'BlockDirtyBitmap' } ## +# @blockdev-mirror +# +# Start mirroring a block device's writes to a new destination. +# +# @device: the name of the device whose writes should be mirrored. +# +# @target: the id or node-name of the block device to mirror to. This mustn't be +# attached to guest. +# +# @replaces: #optional with sync=full graph node name to be replaced by the new +# image when a whole image copy is done. This can be used to repair +# broken Quorum files. +# +# @speed: #optional the maximum speed, in bytes per second +# +# @sync: what parts of the disk image should be copied to the destination +# (all the disk, only the sectors allocated in the topmost image, or +# only new I/O). +# +# @granularity: #optional granularity of the dirty bitmap, default is 64K +# if the image format doesn't have clusters, 4K if the clusters +# are smaller than that, else the cluster size. Must be a +# power of 2 between 512 and 64M +# +# @buf-size: #optional maximum amount of data in flight from source to +# target +# +# @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). +# +# Returns: nothing on success. +# +# Since 2.6 +## +{ 'command': 'blockdev-mirror', + 'data': { 'device': 'str', 'target': 'str', + '*replaces': 'str', + 'sync': 'MirrorSyncMode', + '*speed': 'int', '*granularity': 'uint32', + '*buf-size': 'int', '*on-source-error': 'BlockdevOnError', + '*on-target-error': 'BlockdevOnError' } } + +## # @block_set_io_throttle: # # Change I/O throttle limits for a block drive. |