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[Adam Gandelman <1193359@xxxxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1193359

Title:
  Cannot live block migrate an instance without shared storage

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) grizzly series:
  Fix Released

Bug description:
  In the current trunk (Havana):  commit
  d8c9864d95bec6d2babb2cb5a2aeeb284fca4834,

  Live migration without shared storage (block migration) is failing.

  Problem:
  A check in pre_live_migration at the destination for the instance existence fails and the respective instance directory gets created.
  https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L3367

  The same check is performed on the destination during pre_block_migration, the instance directory is found and an exception
  is raised, and migration fails :
  https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L3422

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