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[Dan Smith <dms@xxxxxxxxxxxxx>]

Public bug reported:

The evacuate code as it is currently in nova will delete instances when
instance.host != $(hostname) of the host. This assumes that the instance
has been evacuated (because its hostname changed). In that case,
deleting the local residue is correct, but if the host's hostname
changes, then we will just delete data based on a hunch.

Nova-compute needs a better mechanism to detect if an evacuation  has
actually been requested before deleting the data.

See Blueprint robustify-evacuate

** Affects: nova
     Importance: Undecided
     Assignee: Dan Smith (danms)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1471887

Title:
  nova-compute will delete all instances if hostname changes

Status in OpenStack Compute (Nova):
  In Progress

Bug description:
  The evacuate code as it is currently in nova will delete instances
  when instance.host != $(hostname) of the host. This assumes that the
  instance has been evacuated (because its hostname changed). In that
  case, deleting the local residue is correct, but if the host's
  hostname changes, then we will just delete data based on a hunch.

  Nova-compute needs a better mechanism to detect if an evacuation  has
  actually been requested before deleting the data.

  See Blueprint robustify-evacuate

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