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| author | John Snow <jsnow@redhat.com> | 2015-04-17 19:49:58 -0400 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2015-04-28 15:36:10 +0200 |
| commit | d58d84539784d27c826924a79d9436178b07ff69 (patch) | |
| tree | dfc10d7edcb62f28355eab4d7b6ab3eb9bc0bca6 /qapi | |
| parent | 9bd2b08f27b9c27bb40d73b6466321b8c635086e (diff) | |
| download | qemu-d58d84539784d27c826924a79d9436178b07ff69.tar.gz qemu-d58d84539784d27c826924a79d9436178b07ff69.tar.bz2 qemu-d58d84539784d27c826924a79d9436178b07ff69.zip | |
qmp: Add support of "dirty-bitmap" sync mode for drive-backup
For "dirty-bitmap" sync mode, the block job will iterate through the
given dirty bitmap to decide if a sector needs backup (backup all the
dirty clusters and skip clean ones), just as allocation conditions of
"top" sync mode.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1429314609-29776-11-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/block-core.json | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index f3b92d80c9..8a4c7f21fc 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -512,10 +512,12 @@ # # @none: only copy data written from now on # +# @dirty-bitmap: only copy data described by the dirty bitmap. Since: 2.4 +# # Since: 1.3 ## { 'enum': 'MirrorSyncMode', - 'data': ['top', 'full', 'none'] } + 'data': ['top', 'full', 'none', 'dirty-bitmap'] } ## # @BlockJobType: @@ -690,14 +692,18 @@ # probe if @mode is 'existing', else the format of the source # # @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). +# (all the disk, only the sectors allocated in the topmost image, from a +# dirty bitmap, or only new I/O). # # @mode: #optional whether and how QEMU should create a new image, default is # 'absolute-paths'. # # @speed: #optional the maximum speed, in bytes per second # +# @bitmap: #optional the name of dirty bitmap if sync is "dirty-bitmap". +# Must be present if sync is "dirty-bitmap", must NOT be present +# otherwise. (Since 2.4) +# # @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). @@ -715,7 +721,7 @@ { 'type': 'DriveBackup', 'data': { 'device': 'str', 'target': 'str', '*format': 'str', 'sync': 'MirrorSyncMode', '*mode': 'NewImageMode', - '*speed': 'int', + '*speed': 'int', '*bitmap': 'str', '*on-source-error': 'BlockdevOnError', '*on-target-error': 'BlockdevOnError' } } |