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osd: cancel_flush requeues blocked events after blocking event #4041

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merged 1 commit into from Mar 17, 2015

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ghost commented Mar 17, 2015

If we have request A (say, cache-flush) that blocks things, and then
request B that gets blocked on it, and we have an interval change, then we
need to requeue B first, then A, so that the resulting queue will keep
A before B and preserve the order.

This was observed on this firefly run:

  ubuntu@teuthology:/a/sage-2015-01-09_21:43:43-rados-firefly-distro-basic-multi/694675

Backport: giant, firefly
Fixes: #10512
Signed-off-by: Sage Weil <sage@redhat.com>
(cherry picked from commit 11bdfb4)
@ghost ghost self-assigned this Mar 17, 2015
@ghost ghost added bug fix core labels Mar 17, 2015
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loic-bot commented Mar 17, 2015

SUCCESS: the output of run-make-check.sh on centos-7 for 4dbf1b3 is http://paste2.org/G5Ww7sYL

:octocat: Sent from GH.

liewegas added a commit that referenced this pull request Mar 17, 2015
osd: cancel_flush requeues blocked events after blocking event
@liewegas liewegas merged commit ca635ce into ceph:giant Mar 17, 2015
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