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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 /qmp-commands.hx | |
| parent | 9bd2b08f27b9c27bb40d73b6466321b8c635086e (diff) | |
| download | qemu-d58d84539784d27c826924a79d9436178b07ff69.zip qemu-d58d84539784d27c826924a79d9436178b07ff69.tar.gz qemu-d58d84539784d27c826924a79d9436178b07ff69.tar.bz2 | |
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 'qmp-commands.hx')
| -rw-r--r-- | qmp-commands.hx | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/qmp-commands.hx b/qmp-commands.hx index 1aeab50..9b10d3d 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -1110,7 +1110,7 @@ EQMP { .name = "drive-backup", .args_type = "sync:s,device:B,target:s,speed:i?,mode:s?,format:s?," - "on-source-error:s?,on-target-error:s?", + "bitmap:s?,on-source-error:s?,on-target-error:s?", .mhandler.cmd_new = qmp_marshal_input_drive_backup, }, @@ -1137,8 +1137,10 @@ Arguments: (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, or "none" to only replicate new I/O - (MirrorSyncMode). + allocated in the topmost image, "dirty-bitmap" for only the dirty sectors in + the bitmap, or "none" to only replicate new I/O (MirrorSyncMode). +- "bitmap": dirty bitmap name for sync==dirty-bitmap. Must be present if sync + is "dirty-bitmap", 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) |