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[Matt Riedemann <mriedem@xxxxxxxxxx>]

*** This bug is a duplicate of bug 1570748 ***
    https://bugs.launchpad.net/bugs/1570748

This was the kilo fix:

https://review.openstack.org/#/c/309168/

For bug 1570748. I'm going to duplicate this bug against bug 1570748 -
if it's not the same issue, please re-open and explain why.

** This bug has been marked a duplicate of bug 1570748
   Bug: resize instance after edit flavor with horizon

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https://bugs.launchpad.net/bugs/1592253

Title:
  Bug: migrate instance after delete flavor

Status in OpenStack Compute (nova):
  New

Bug description:
  Error occured when migrate instance after delete flavor.

  Reproduce step :

  1. create flavor A
  2. boot instance using flavor A
  3. delete flavor A
  4. migrate instance (ex : nova migrate [instance_uuid])
  5. Error occured

  Error Log :
  ==========================================================================
  nova-compute.log
     File "/opt/openstack/src/nova/nova/conductor/manager.py", line 422, in _object_dispatch
       return getattr(target, method)(*args, **kwargs)

     File "/opt/openstack/src/nova/nova/objects/base.py", line 163, in wrapper
       result = fn(cls, context, *args, **kwargs)

     File "/opt/openstack/src/nova/nova/objects/flavor.py", line 132, in get_by_id
       db_flavor = db.flavor_get(context, id)

     File "/opt/openstack/src/nova/nova/db/api.py", line 1479, in flavor_get
       return IMPL.flavor_get(context, id)

     File "/opt/openstack/src/nova/nova/db/sqlalchemy/api.py", line 233, in wrapper
       return f(*args, **kwargs)

     File "/opt/openstack/src/nova/nova/db/sqlalchemy/api.py", line 4732, in flavor_get
       raise exception.FlavorNotFound(flavor_id=id)

   FlavorNotFound: Flavor 8 could not be found.
  ==========================================================================

  This Error is occured when resize_instance method is called as below code:
  /opt/openstack/src/nova/nova/compute/manager.py

      def resize_instance(self, context, instance, image,
                          reservations, migration, instance_type,
                          clean_shutdown=True):
  ....
              if (not instance_type or
                  not isinstance(instance_type, objects.Flavor)):
                  instance_type = objects.Flavor.get_by_id(
                      context, migration['new_instance_type_id'])
  ....

  context parameter has this data:
  {'domain': None, 'project_name': u'admin', 'project_domain': None, 'timestamp': '2016-06-14T04:34:50.759410', 'auth_token': u'457802dc378442a6ac4a5b952587927e', 'remote_address': u'10.10.10.5, 'quota_class': None, 'resource_uuid': None, 'is_admin': True, 'user': u'694df2010229405e966aafc16a30784f', 'service_catalog': [{u'endpoints': [{u'adminURL': u'https://devel-api.com:8776/v2/9b7ce4df5e1549058687d82e31d127b1', u'region': u'RegionOne', u'internalURL': u'https://devel-api.com:8776/v2/9b7ce4df5e1549058687d82e31d127b1', u'publicURL': u'https://devel-api.com:8776/v2/9b7ce4df5e1549058687d82e31d127b1'}], u'type': u'volumev2', u'name': u'cinderv2'}, {u'endpoints': [{u'adminURL': u'https://devel-api.com:8776/v1/9b7ce4df5e1549058687d82e31d127b1', u'region': u'RegionOne', u'internalURL': u'https://devel-api.com:8776/v1/9b7ce4df5e1549058687d82e31d127b1', u'publicURL': u'https://devel-api.com:8776/v1/9b7ce4df5e1549058687d82e31d127b1'}], u'type': u'volume', u'name': u'cinder'}], 'tenant': u'9b7ce4df5e1549058687d82e31d127b1', 'read_only': False, 'project_id': u'9b7ce4df5e1549058687d82e31d127b1', 'user_id': u'694df2010229405e966aafc16a30784f', 'show_deleted': False, 'roles': [u'admin'], 'user_identity': '694df2010229405e966aafc16a30784f 9b7ce4df5e1549058687d82e31d127b1 - - -', 'read_deleted': 'no', 'request_id': u'req-59dca904-6384-4ca0-b696-5731c80198d7', 'instance_lock_checked': False, 'user_domain': None, 'user_name': u'admin'}

  When objects.Flavor.get_by_id method is called, error is occurred because the default value of read_deleted is "no".
  So, I think context.read_deleted attribute should be set to "yes" before objects.Flavor.get_by_id method is called.

  I've tested this using stable/kilo and I think liberty, mitaka has
  same problem.

  Thanks.

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