Reviewed:  https://review.openstack.org/51315
Committed: 
http://github.com/openstack/nova/commit/27e6f05a42ec7c5e212c6a3ae431537cbc10686e
Submitter: Jenkins
Branch:    milestone-proposed

commit 27e6f05a42ec7c5e212c6a3ae431537cbc10686e
Author: Edward Hope-Morley <edward.hope-mor...@canonical.com>
Date:   Fri Oct 4 20:13:44 2013 +0100

    Fixes error on live-migration of volume-backed vm
    
    Live-migrating a volume-backed vm (i.e. booted from volume)
    is currently broken.
    
    This patch fixes the case where a volume-backed vm is to be
    live-migrated without shared storage on compute nodes or
    ephemeral volumes attached to the instance. Specifically, it
    stops create_images_and_backing() from blowing up when no disk
    info is supplied.
    
    Change-Id: Icec7a6e7225ebe029e24d3be303c9ab01818f30e
    Fixes: bug 1235182
    (cherry picked from commit 0cbb231cd14c8cb767b67d89b14d0ef46b3e8018)


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

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https://bugs.launchpad.net/bugs/1235182

Title:
  live migration fails with vm booted from vol

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  Sequence (Havana):

  1. boot a vm from cinder volume
  2. nova live-migration <a new host>

  I see the following traceback in /var/log/nova/nova-compute.log on the
  source host: (see attached file 'nova_compute_traceback')

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