Nova recently renamed the check_can_live_migrate_destination_cleanup method to cleanup_live_migration_destination_check. Since the PowerVM driver doesn't implement that method, migrations will end up raising a NotImplementedError from the default Nova driver.
Nova recently renamed the check_can_ live_migrate_ destination_ cleanup method to cleanup_ live_migration_ destination_ check. Since the PowerVM driver doesn't implement that method, migrations will end up raising a NotImplementedError from the default Nova driver.
Simply renaming the method should be sufficient.