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Backport #15032

infernalis: QEMU VM hangs talking to RBD via librbd

Added by Nathan Cutler over 5 years ago. Updated over 4 years ago.

Status:
Resolved
Priority:
Urgent
Assignee:
Jason Dillaman
Target version:
Ceph - v9.2.2
Release:
infernalis
Crash signature (v1):
Crash signature (v2):

Description

https://github.com/ceph/ceph/pull/8010

Related issues

Copied from rbd - Bug #14988: QEMU VM hangs talking to RBD via librbd Resolved 03/05/2016

Associated revisions

Revision f9e5ae80 (diff)
Added by Jason Dillaman over 5 years ago

librbd: complete cache reads on cache's dedicate thread

If a snapshot is created out-of-band, the next IO will result in the
cache being flushed. If pending writeback data performs a copy-on-write,
the read from the parent will be blocked.

Fixes: #15032

Signed-off-by: Jason Dillaman <>

Revision 281d63df (diff)
Added by Jason Dillaman over 5 years ago

librbd: complete cache reads on cache's dedicate thread

If a snapshot is created out-of-band, the next IO will result in the
cache being flushed. If pending writeback data performs a copy-on-write,
the read from the parent will be blocked.

Fixes: #15032

Signed-off-by: Jason Dillaman <>
(cherry picked from commit f9e5ae80e3b0799b5a7e1d3f93b2d85a4baff20f)

History

#1 Updated by Nathan Cutler over 5 years ago

  • Copied from Bug #14988: QEMU VM hangs talking to RBD via librbd added

#2 Updated by Nathan Cutler over 5 years ago

  • Assignee set to Jason Dillaman

#3 Updated by Jason Dillaman over 5 years ago

  • Description updated (diff)

#4 Updated by Jason Dillaman over 5 years ago

  • Status changed from New to In Progress
  • Priority changed from Normal to Urgent

#5 Updated by Jason Dillaman over 5 years ago

  • Status changed from In Progress to Fix Under Review

#6 Updated by Jason Dillaman about 5 years ago

  • Status changed from Fix Under Review to Resolved

#7 Updated by Loïc Dachary over 4 years ago

  • Target version set to v9.2.2

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