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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

*** This bug is a duplicate of bug 1666831 ***
    https://bugs.launchpad.net/bugs/1666831

** This bug is no longer a duplicate of bug 1592015
   libvirt: cleanup of a volume backed instance resize leaves behind the instance directory
** This bug has been marked a duplicate of bug 1666831
   Nova recreates instance directory after migration/resize

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https://bugs.launchpad.net/bugs/1686262

Title:
  Instance Path Not Deleted After Migration

Status in OpenStack Compute (nova):
  New

Bug description:
  After a migration (offline) or resize is performed the instance path
  /var/lib/nova/instances/<INSTANCE_ID> isn't correctly deleted and a
  /var/lib/nova/instances/<INSTANCE_ID>/disk.info is created. If the
  instance is subsequently live migrated back to the original Compute
  node the live migration will fail with an error similar to

  DestinationDiskExists: The supplied disk path (/var/lib/nova/instances/b50aea7a-7cc5-4216-9ce6-a447d5e2c
  6b3) already exists, it is expected not to exist.

  The instance directory is initially deleted after the offline
  migration completes but then gets recreated containing the disk.info
  once the migration is confirmed buy the user.

  I've seen a similar DestinationDiskExists Exception get raised when
  only live migrations have occurred previously but haven't been able to
  recreate as the directory is deleted once the exception is raised.

  We are using Nova 14.0.2 from OpenStack Newton.

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