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[OpenStack Hudson <1158179@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/25411
Committed: http://github.com/openstack/cinder/commit/75af3f7669938e799df28adce228f0a5a9d7e109
Submitter: Jenkins
Branch:    milestone-proposed

commit 75af3f7669938e799df28adce228f0a5a9d7e109
Author: John Griffith <john.griffith@xxxxxxxxxxxxx>
Date:   Tue Mar 26 10:19:47 2013 -0600

    Sync lockutils from oslo-incubator stable/grizzly.
    
    Changes include:
    
    3cb71ff Locking edge case when lock_path does not exist
    21925b6 Fix locking issues in Windows
    547ab34 Fix Copyright Headers - Rename LLC to Foundation
    
    Fix bug 1158179.
    
    Change-Id: I0d5fb58bef593233068accfcea0dff9fa05f61ef
    (cherry picked from commit 649e8926cf6a6ee1cc01a34e6f718e0996feb930)


** Changed in: cinder
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1158179

Title:
  Lockutils - deletes directory rendering locks invalid

Status in Cinder:
  Fix Released
Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) folsom series:
  Confirmed
Status in Oslo - a Library of Common OpenStack Code:
  Fix Committed
Status in oslo grizzly series:
  Fix Committed
Status in OpenStack Quantum (virtual network service):
  Fix Released

Bug description:
  There is an edge case as follows:
      process A takes lock
      process B waits on lock
      process A completed work
      process B takes lock
      process A tabes lock (this is without process B freeing the lock)

  This is reproduced very easily:
      ensure that the lock_pack directory does not exist

  Each time a lock is freed the directory is deleted ...

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