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[John Garbutt <john@xxxxxxxxxxxxxxx>]

Public bug reported:

After an instance has been in the rescue state for some time, a periodic task triggers to unrescue the instances:
_poll_rescued_instances

File nova/notifications.py info_from_instance
  instance_type = flavors.extract_flavor(instance_ref)
File "nova/compute/flavors.py" in extract_flavor
  instance_type[key] = type_fn(sys_meta[type_key])
KeyError: 'instance_type_memory_mb'

This then continues to happen on every run of the periodic task, and
starts to fill up the DB with instance faults.

** Affects: nova
     Importance: Medium
     Assignee: John Garbutt (johngarbutt)
         Status: In Progress


** Tags: compute

** Changed in: nova
   Importance: Undecided => Medium

** Changed in: nova
       Status: New => Triaged

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https://bugs.launchpad.net/bugs/1277054

Title:
  Poll rescued instances fails with key error

Status in OpenStack Compute (Nova):
  In Progress

Bug description:
  After an instance has been in the rescue state for some time, a periodic task triggers to unrescue the instances:
  _poll_rescued_instances

  File nova/notifications.py info_from_instance
    instance_type = flavors.extract_flavor(instance_ref)
  File "nova/compute/flavors.py" in extract_flavor
    instance_type[key] = type_fn(sys_meta[type_key])
  KeyError: 'instance_type_memory_mb'

  This then continues to happen on every run of the periodic task, and
  starts to fill up the DB with instance faults.

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