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[Dan Smith <danms@xxxxxxxxxx>]

This was fixed at some point, probably after several recent changes, and
is no longer an issue according to the reporter.

** Changed in: nova
       Status: Triaged => Invalid

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https://bugs.launchpad.net/bugs/981263

Title:
  Nova API should present deleted flavors (instance_types) in some cases

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  In certain cases Nova API should return instance flavors
  (instance_types) that are deleted.  Notably if there is an instance
  that is "active" and the flavor has been deleted, we need to pull the
  instance_type data down to ensure that we can apply network specifics
  attached to that instance_type on startup of nova-compute.

  The second case that a deleted flavor should be returned is if the
  instance_type is being requested by ID, as IDs should not be reused.
  This is important for Horizon to be able to properly retrieve
  "instances" for a given project (in Nova Dashboard and Syspanel
  Dashboard).

  Example traceback you can see if you delete a flavor and restart nova
  compute:

  resource: 'NoneType' object is not subscriptable
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi Traceback (most recent call last):
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/wsgi.py", line 851, in _process_stack
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     action_result = self.dispatch(meth, request, action_args)
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/wsgi.py", line 926, in dispatch
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     return method(req=request, **action_args)
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/compute/servers.py", line 382, in detail
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     servers = self._get_servers(req, is_detail=True)
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/compute/servers.py", line 465, in _get_servers
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     return self._view_builder.detail(req, limited_list)
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/compute/views/servers.py", line 123, in detail
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     return self._list_view(self.show, request, instances)
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/compute/views/servers.py", line 127, in _list_view
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     server_list = [func(request, server)["server"] for server in servers]
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/compute/views/servers.py", line 61, in wrapped
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     return func(self, request, instance)
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/compute/views/servers.py", line 97, in show
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     "flavor": self._get_flavor(request, instance),
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi   File "/opt/stack/nova/nova/api/openstack/compute/views/servers.py", line 172, in _get_flavor
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi     flavor_id = instance["instance_type"]["flavorid"]
  2012-04-13 19:31:18 TRACE nova.api.openstack.wsgi TypeError: 'NoneType' object is not subscriptable

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