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Migration: Emit event at start of pass

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Emit an event each time we sync the dirty bitmap on the source;
this helps libvirt use postcopy by giving it a kick when it
might be a good idea to start the postcopy.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1450266458-3178-5-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-12-16 11:47:36 +00:00 • committed by Amit Shah
parent 6ba996bb45
commit 4addcd4fdc
3 changed files with 31 additions and 0 deletions
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14
docs/qmp-events.txt
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@ -496,6 +496,20 @@ Example:
{"timestamp": {"seconds": 1432121972, "microseconds": 744001},
"event": "MIGRATION", "data": {"status": "completed"}}
MIGRATION_PASS
--------------
Emitted from the source side of a migration at the start of each pass
(when it syncs the dirty bitmap)
Data: None.
- "pass": An incrementing count (starting at 1 on the first pass)
Example:
{"timestamp": {"seconds": 1449669631, "microseconds": 239225},
"event": "MIGRATION_PASS", "data": {"pass": 2}}
STOP
----