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| author | Paolo Bonzini <pbonzini@redhat.com> | 2013-01-21 17:09:46 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-01-25 18:18:34 +0100 |
| commit | eee13dfe302833944d1176677d12a6ea421a94ea (patch) | |
| tree | 53581a0a6c022df243eabdf32cf8e03232113c1c /qapi-schema.json | |
| parent | 50717e941b9f306a45292621999eeafbaa954418 (diff) | |
| download | qemu-eee13dfe302833944d1176677d12a6ea421a94ea.zip qemu-eee13dfe302833944d1176677d12a6ea421a94ea.tar.gz qemu-eee13dfe302833944d1176677d12a6ea421a94ea.tar.bz2 | |
mirror: allow customizing the granularity
The desired granularity may be very different depending on the kind of
operation (e.g. continuous replication vs. collapse-to-raw) and whether
the VM is expected to perform lots of I/O while mirroring is in progress.
Allow the user to customize it, while providing a sane default so that
in general there will be no extra allocated space in the target compared
to the source.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qapi-schema.json')
| -rw-r--r-- | qapi-schema.json | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/qapi-schema.json b/qapi-schema.json index ce4f901..fd5ec93 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -1636,6 +1636,11 @@ # (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 (since 1.4). +# # @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). @@ -1652,7 +1657,8 @@ { 'command': 'drive-mirror', 'data': { 'device': 'str', 'target': 'str', '*format': 'str', 'sync': 'MirrorSyncMode', '*mode': 'NewImageMode', - '*speed': 'int', '*on-source-error': 'BlockdevOnError', + '*speed': 'int', '*granularity': 'uint32', + '*on-source-error': 'BlockdevOnError', '*on-target-error': 'BlockdevOnError' } } ## |