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[Shyama <shyvenug@xxxxxxxxxx>]

Public bug reported:

1. Live migrate instance from host A to B
2. The live migration fails and _rollback_live_migration is called. Here if the remove_volume_connection throw an error the rollback_live_migration_at_destination is not called.
3. This could leave resources not cleaned up on the destination.

https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L5489
any exception from the remove_volume_connection should be handled and
the rollback on destination should be called.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1535643

Title:
  rollback on destination after failed live migration is not called
  always

Status in OpenStack Compute (nova):
  New

Bug description:
  1. Live migrate instance from host A to B
  2. The live migration fails and _rollback_live_migration is called. Here if the remove_volume_connection throw an error the rollback_live_migration_at_destination is not called.
  3. This could leave resources not cleaned up on the destination.

  https://github.com/openstack/nova/blob/master/nova/compute/manager.py#L5489
  any exception from the remove_volume_connection should be handled and
  the rollback on destination should be called.

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