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kraken: rbd-mirror: failover and failback of unmodified image results in split-brain #14974

Merged
merged 2 commits into from Jul 5, 2017
Merged

kraken: rbd-mirror: failover and failback of unmodified image results in split-brain #14974

merged 2 commits into from Jul 5, 2017

Commits on Jun 27, 2017

  1. rbd-mirror: prevent infinite loop when computing replay status 

    If the image had a non-primary predecessor epoch whose tag tid
duplicates an epoch within its own journal, an infinite loop
would result.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 3f179bf)
    Jason Dillaman committed Jun 27, 2017
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  2. librbd: add no-op event when promoting an image 

    The rbd-mirror process needs an event in the journal
to properly detect the transition between primary and
non-primary state between peers.

Fixes: http://tracker.ceph.com/issues/19858
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 4031555)

Conflicts:
	src/librbd/journal/DemoteRequest.cc: logic exists in Journal.cc
    Jason Dillaman committed Jun 27, 2017
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