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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

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

** Changed in: nova
    Milestone: None => juno-1

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https://bugs.launchpad.net/bugs/1278696

Title:
  'DescribeInstances' in ec2 shows wrong image-message to instance
  booting from volumes

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  'DescribeInstances' in ec2 shows the wrong image
  message('ami-00000002') to the instance booting from a volume:

  n781dba539a84:~ # euca-describe-instances i-0000003a
  RESERVATION     r-mdcwadip      c1c092e1c88f4027aeb203d50d63135b
  INSTANCE        i-0000003a      ami-00000002            wjvm1   running None (c1c092e1c88f4027aeb203d50d63135b, n781dba57c996)  0               m1.small        2014-02-10T07:00:40.000Z        nova          20.20.16.12                      ebs
  BLOCKDEVICE     /dev/vda        vol-0000000d            false

  More info can be found here: http://paste.openstack.org/show/64087/

  --------------

  The codes in ec2utils.py:

  def glance_id_to_id(context, glance_id):
      """Convert a glance id to an internal (db) id."""
      if glance_id is None:
          return
      try:
          return db.s3_image_get_by_uuid(context, glance_id)['id']
      except exception.NotFound:
          return db.s3_image_create(context, glance_id)['id']

  ------

  The image_ref (as glance_id in this function) of the instance booting from a volume, will be "", not None.
  The protected codes above can't take efforts.

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