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| author | Fam Zheng <famz@redhat.com> | 2014-12-18 18:37:05 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2015-01-13 11:47:56 +0000 |
| commit | c29c1dd312f39ec18a3c6177c6da09a75e095d70 (patch) | |
| tree | 8be81941bacdac122ab360b1f6c9486add1e8ef9 /qapi | |
| parent | b7b9d39a7a5bd3a7fe5968b7780c9868c3210a4d (diff) | |
| download | qemu-c29c1dd312f39ec18a3c6177c6da09a75e095d70.tar.gz | |
qmp: Add command 'blockdev-backup'
Similar to drive-backup, but this command uses a device id as target
instead of creating/opening an image file.
Also add blocker on target bs, since the target is also a named device
now.
Add check and report error for bs == target which became possible but is
an illegal case with introduction of blockdev-backup.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1418899027-8445-3-git-send-email-famz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/block-core.json | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 2d8bd253a7..80984d1660 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -703,6 +703,41 @@ '*on-target-error': 'BlockdevOnError' } } ## +# @BlockdevBackup +# +# @device: the name of the device which should be copied. +# +# @target: the name of the backup target device. +# +# @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). +# +# @speed: #optional the maximum speed, in bytes per second. The default is 0, +# for unlimited. +# +# @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: 2.3 +## +{ 'type': 'BlockdevBackup', + 'data': { 'device': 'str', 'target': 'str', + 'sync': 'MirrorSyncMode', + '*speed': 'int', + '*on-source-error': 'BlockdevOnError', + '*on-target-error': 'BlockdevOnError' } } + +## # @blockdev-snapshot-sync # # Generates a synchronous snapshot of a block device. @@ -822,6 +857,25 @@ { 'command': 'drive-backup', 'data': 'DriveBackup' } ## +# @blockdev-backup +# +# Start a point-in-time copy of a block device to a new destination. The +# status of ongoing blockdev-backup operations can be checked with +# query-block-jobs where the BlockJobInfo.type field has the value 'backup'. +# The operation can be stopped before it has completed using the +# block-job-cancel command. +# +# For the arguments, see the documentation of BlockdevBackup. +# +# Returns: Nothing on success. +# If @device or @target is not a valid block device, DeviceNotFound. +# +# Since 2.3 +## +{ 'command': 'blockdev-backup', 'data': 'BlockdevBackup' } + + +## # @query-named-block-nodes # # Get the named block driver list |