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[OpenStack Infra <1436579@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/167819
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=94358a166ae5796ba5a7278a0883db42b81f12b2
Submitter: Jenkins
Branch:    master

commit 94358a166ae5796ba5a7278a0883db42b81f12b2
Author: Tomoki Sekiyama <tomoki.sekiyama@xxxxxxx>
Date:   Wed Mar 25 14:32:32 2015 -0400

    libvirt: Make behavior of os_require_quiesce consistent
    
    Currently, os_require_quiesce metadata is used in two meanings.
    For volume backed instances, quiescing is always tried on
    snapshot, and the metadata specifies whether snapshot should
    be aborted if quiescing is failed. For image backed instances
    in the libvirt driver, the metadata determines whether quiescing
    is invoked or not.
    
    To make the behaviors consistent, this introduces the same logic
    as volume backed instances into libvirt image snapshotting.
    
    This also fixes AttributeError during live snapshot introduced by
    commit 4f43bbafa4bfc2ab149d5db4eb55320c1602658b.
    
    Change-Id: Iade076c996118e53d085ede9574cdf01c9e97829
    Closes-Bug: #1436579
    Closes-Bug: #1488565


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1436579

Title:
  os_require_quiesce has different meaning between volume backed
  instances and volume backed instances

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  os_require_quiesce image metadata is used in two different meanings in
  volume backed instances and volume backed instances.

  For volume backed instances (in nova-api):
    Quiescing is always tried on snapshot. The os_require_quiesce
    is used to determine whether snapshot should be aborted
    when quiescing is failed.

  For image backed instances (in the libvirt driver):
    The os_require_quiesce metadata is used to determine whether
    quiescing is invoked or not (quiescing is invoked only when
    os_require_quiesce is set to True).

  These behavior should be consistent.

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