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[LuyaoZhong <605708285@xxxxxx>]

Public bug reported:

Currently, Resource Tracker has tracked_instances and
tracked_migrations, error migrations and orphan instances not included,
but these may also have occupied some resources.So we should track them
also. We have already a patch to deal with it. [1]

We expect period task "_cleanup_imcomplete_migrations" can handle the error migrations and set them to 'failed' status after some cleanup works, then the migrations will not be tracked in Resource Tracker.
For orphan instances, there are already some patch doing related works. [2]
before the orthan instances cleanup, we should keep them in resource tracker.

References:
[1]https://review.opendev.org/#/c/678451/4
[2]https://review.opendev.org/#/c/627765/

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1841727

Title:
  Resource Tracker should track error migrations and orphan instances

Status in OpenStack Compute (nova):
  New

Bug description:
  Currently, Resource Tracker has tracked_instances and
  tracked_migrations, error migrations and orphan instances not
  included, but these may also have occupied some resources.So we should
  track them also. We have already a patch to deal with it. [1]

  We expect period task "_cleanup_imcomplete_migrations" can handle the error migrations and set them to 'failed' status after some cleanup works, then the migrations will not be tracked in Resource Tracker.
  For orphan instances, there are already some patch doing related works. [2]
  before the orthan instances cleanup, we should keep them in resource tracker.

  References:
  [1]https://review.opendev.org/#/c/678451/4
  [2]https://review.opendev.org/#/c/627765/

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