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[Jiri Suchomel <jsuchome@xxxxxxxx>]

Public bug reported:

When there are some deleted instances present before upgrading, 
"nova-manage db online_data_migrations" will not be able to finish.

I think this is because populate_missing_availability_zones does not
check for deleted instances (or for non-existent AZ) - so it is run over
and over again because it cannot set AZ to a deleted instance.

** Affects: nova
     Importance: Undecided
     Assignee: Jiri Suchomel (jsuchome)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1788115

Title:
  nova-manage db online_data_migrations hangs with deleted instances

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  When there are some deleted instances present before upgrading, 
  "nova-manage db online_data_migrations" will not be able to finish.

  I think this is because populate_missing_availability_zones does not
  check for deleted instances (or for non-existent AZ) - so it is run
  over and over again because it cannot set AZ to a deleted instance.

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