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qmp: convert blockdev-snapshot-sync to a wrapper around transactions

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Simplify the blockdev-snapshot-sync code and gain failsafe operation
by turning it into a wrapper around the new transaction command.  A new
option is also added matching "mode".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-03-06 18:55:59 +01:00 • committed by Kevin Wolf
parent bc8b094feb
commit 6cc2a4157b
5 changed files with 44 additions and 73 deletions
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2
qmp-commands.hx
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@ -760,6 +760,8 @@ Arguments:
- "device": device name to snapshot (json-string)
- "snapshot-file": name of new image file (json-string)
- "mode": whether and how QEMU should create the snapshot file
(NewImageMode, optional, default "absolute-paths")
- "format": format of new image (json-string, optional)
Example: