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librbd: 1967: FAILED assert(watchers.size() == 1) #5171

merged 1 commit into from Jul 24, 2015


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smithfarm commented Jul 8, 2015

librbd: assertion failure race condition if watch disconnected
It's possible for librbd's watch of the header object to be reset by
connection issues just prior to the image being removed.  This will
causes an assertion failure which assumes at least one watcher on the

Fixes: #12176
Backport: hammer, firefly
Signed-off-by: Jason Dillaman <>
(cherry picked from commit af276de)

@smithfarm smithfarm added this to the firefly milestone Jul 8, 2015

@smithfarm smithfarm self-assigned this Jul 8, 2015

@ghost ghost changed the title from librbd/ 1967: FAILED assert(watchers.size() == 1) to librbd: 1967: FAILED assert(watchers.size() == 1) Jul 21, 2015


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smithfarm commented Jul 24, 2015

@jdurgin: This commit has passed integration tests ( -- is it OK to merge? I'm asking you because you merged the master commit that this is a backport of: #5090

jdurgin added a commit that referenced this pull request Jul 24, 2015

Merge pull request #5171 from SUSE/wip-12240-firefly
librbd: 1967: FAILED assert(watchers.size() == 1)

Reviewed-by: Josh Durgin <>

@jdurgin jdurgin merged commit 94060b7 into ceph:firefly Jul 24, 2015

@smithfarm smithfarm deleted the SUSE:wip-12240-firefly branch Jul 24, 2015

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