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Commit 59c2be1e authored by Yehuda Sadeh's avatar Yehuda Sadeh Committed by Sage Weil
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rbd: use watch/notify for changes in rbd header



Send notifications when we change the rbd header (e.g. create a snapshot)
and wait for such notifications.  This allows synchronizing the snapshot
creation between different rbd clients/rools.

Signed-off-by: default avatarYehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: default avatarSage Weil <sage@newdream.net>
parent a40c4f10
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