"base": "/tmp/master.qcow2" } }
<- { "return": {} }
-drive-backup
-------------
-
-Start a point-in-time copy of a block device to a new destination. The
-status of ongoing drive-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.
-
-Arguments:
-
-- "job-id": Identifier for the newly-created block job. If omitted,
- the device name will be used. (json-string, optional)
-- "device": the device name or node-name of a root node which should be copied.
- (json-string)
-- "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.
- (json-string)
-- "format": the format of the new destination, default is to probe if 'mode' is
- 'existing', else the format of the source
- (json-string, optional)
-- "sync": what parts of the disk image should be copied to the destination;
- possibilities include "full" for all the disk, "top" for only the sectors
- allocated in the topmost image, "incremental" for only the dirty sectors in
- the bitmap, or "none" to only replicate new I/O (MirrorSyncMode).
-- "bitmap": dirty bitmap name for sync==incremental. Must be present if sync
- is "incremental", must NOT be present otherwise.
-- "mode": whether and how QEMU should create a new image
- (NewImageMode, optional, default 'absolute-paths')
-- "speed": the maximum speed, in bytes per second (json-int, optional)
-- "compress": true to compress data, if the target format supports it.
- (json-bool, optional, default false)
-- "on-source-error": 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.
- (BlockdevOnError, optional)
-- "on-target-error": the action to take on an error on the target, default
- 'report' (no limitations, since this applies to
- a different block device than device).
- (BlockdevOnError, optional)
-
-Example:
--> { "execute": "drive-backup", "arguments": { "device": "drive0",
- "sync": "full",
- "target": "backup.img" } }
-<- { "return": {} }
-
blockdev-backup
---------------