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[Jordan Callicoat <jordan.callicoat@xxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1143659 ***
    https://bugs.launchpad.net/bugs/1143659

** This bug has been marked a duplicate of bug 1143659
   Deleting instance during snapshot leaves snapshot state in saving

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https://bugs.launchpad.net/bugs/1233916

Title:
  Deleting an instance doesn't check task_state properly

Status in OpenStack Compute (Nova):
  Confirmed

Bug description:
  Issuing a delete on an instance with any task_state other than None
  should either fail, or do cleanup as required. For example, when
  taking a snapshot of an instance, task_state goes to image_snapshot,
  but during the snapshot you can issue a delete on the instance, and
  task_state goes to deleting as the resources are removed.  If you do
  it quickly, while the snapshot is running, it ends up deleting the
  backing disk before the snapshot is complete and the snapshot just
  hangs in SAVING status. I also saw state transition go image_snapshot
  -> image_pending_upload -> deleting and the snapshot hung in SAVING in
  that case as well.

  Steps to reproduce:

  1. Create instance
  2. Create snapshot
  3. Delete instance while snapshot is running
  4. Hung snapshot

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