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authorFam Zheng <famz@redhat.com>2015-06-08 13:56:08 +0800
committerStefan Hajnoczi <stefanha@redhat.com>2015-07-02 10:06:23 +0100
commit0fc9f8ea2800b76eaea20a8a3a91fbeeb4bfa81b (patch)
tree0e38faa50c9b3d149853693e64d945b15d351405 /qapi/block-core.json
parentba3f0e2545c365ebe1dbddb0e53058710d41881e (diff)
downloadhqemu-0fc9f8ea2800b76eaea20a8a3a91fbeeb4bfa81b.zip
hqemu-0fc9f8ea2800b76eaea20a8a3a91fbeeb4bfa81b.tar.gz
qmp: Add optional bool "unmap" to drive-mirror
If specified as "true", it allows discarding on target sectors where source is not allocated. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'qapi/block-core.json')
-rw-r--r--qapi/block-core.json8
1 files changed, 7 insertions, 1 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json
index ed3f890..7b2efb8 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -975,6 +975,11 @@
# @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).
+# @unmap: #optional Whether to try to unmap target sectors where source has
+# only zero. If true, and target unallocated sectors will read as zero,
+# target image sectors will be unmapped; otherwise, zeroes will be
+# written. Both will result in identical contents.
+# Default is true. (Since 2.4)
#
# Returns: nothing on success
# If @device is not a valid block device, DeviceNotFound
@@ -987,7 +992,8 @@
'sync': 'MirrorSyncMode', '*mode': 'NewImageMode',
'*speed': 'int', '*granularity': 'uint32',
'*buf-size': 'int', '*on-source-error': 'BlockdevOnError',
- '*on-target-error': 'BlockdevOnError' } }
+ '*on-target-error': 'BlockdevOnError',
+ '*unmap': 'bool' } }
##
# @BlockDirtyBitmap
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