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[OpenStack Infra <1246201@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/234659
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=bc4b9980fa74e15e98aed5633c61480c751767b5
Submitter: Jenkins
Branch:    master

commit bc4b9980fa74e15e98aed5633c61480c751767b5
Author: Pawel Koniszewski <pawel.koniszewski@xxxxxxxxx>
Date:   Wed Jul 6 11:04:16 2016 +0200

    [libvirt] Live migration fails when config_drive_format=iso9660
    
    This patch enables block live migration with read-only config drive.
    Basically it copies config drive to destination host prior to migration
    start, so that QEMU will not try to write to read-only device and
    therefore it will not raise an exception.
    
    Co-Authored-By: Bartosz Fic <bartosz.fic@xxxxxxxxx>
    Co-Authored-By: Michael Still <mikal@xxxxxxxxxxx>
    
    Change-Id: I9ddaef658e3d9a77e4982275d7df9e56b0a5459f
    Closes-Bug: #1246201


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

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https://bugs.launchpad.net/bugs/1246201

Title:
  Live migration fails when the instance has a
  config_drive_format=iso9660

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) icehouse series:
  Fix Released
Status in OpenStack Compute (nova) juno series:
  Fix Released

Bug description:
  This error has occurred under the following situations.

  ・ Live migration of volume backed instance which has a config-drive
  ・ Block migration of instance which has a config-drive

  we have to create a config-drive on destination host in pre-live-
  migration.

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