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[Sean Dague <sean@xxxxxxxxx>]

This is fixed with the system metadata flavor saving

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

** Changed in: nova
     Assignee: Sirisha Guduru (guduru-sirisha) => (unassigned)

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https://bugs.launchpad.net/bugs/962549

Title:
  Deleting a flavor can cause servers/detail to return HTTP 400

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  Steps to reproduce on essex-4:

  1. Boot an instance using flavor ID 1
  2. After the instance is active, delete the flavor (nova-manage flavor delete m1.tiny)
  3. Make a call to /servers/details (ie nova list)

  # nova list
  The server could not comply with the request since it is either malformed or otherwise incorrect. (HTTP 400)

  from nova-api.log:

  2012-03-22 14:56:40 INFO nova.api.openstack.wsgi [req-43268d0b-0b3f-451f-b36f-bfcb49b68ff9 ryan test] GET http://10.10.10.90:8774/v1.1/test/servers/detail
  2012-03-22 14:56:40 DEBUG nova.api.openstack.wsgi [req-43268d0b-0b3f-451f-b36f-bfcb49b68ff9 ryan test] Unrecognized Content-Type provided in request from (pid=23300
  ) get_body /usr/lib/python2.6/site-packages/nova/api/openstack/wsgi.py:694
  2012-03-22 14:56:40 DEBUG nova.compute.api [req-43268d0b-0b3f-451f-b36f-bfcb49b68ff9 ryan test] Searching by: {'deleted': False, 'project_id': 'test'} from (pid=233
  00) get_all /usr/lib/python2.6/site-packages/nova/compute/api.py:1009
  2012-03-22 14:56:40 DEBUG nova.api.openstack.common [req-43268d0b-0b3f-451f-b36f-bfcb49b68ff9 ryan test] Generated ACTIVE from vm_state=active task_state=None. from
   (pid=23300) status_from_state /usr/lib/python2.6/site-packages/nova/api/openstack/common.py:98
  2012-03-22 14:56:40 ERROR nova.api.openstack.wsgi [req-43268d0b-0b3f-451f-b36f-bfcb49b68ff9 ryan test] Exception handling resource: 'NoneType' object is unsubscript
  able
  (nova.api.openstack.wsgi): TRACE: Traceback (most recent call last):
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/wsgi.py", line 848, in _process_stack
  (nova.api.openstack.wsgi): TRACE:     action_result = self.dispatch(meth, request, action_args)
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/wsgi.py", line 924, in dispatch
  (nova.api.openstack.wsgi): TRACE:     return method(req=request, **action_args)
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/compute/servers.py", line 382, in detail
  (nova.api.openstack.wsgi): TRACE:     servers = self._get_servers(req, is_detail=True)
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/compute/servers.py", line 465, in _get_servers
  (nova.api.openstack.wsgi): TRACE:     return self._view_builder.detail(req, limited_list)
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/compute/views/servers.py", line 123, in detail
  (nova.api.openstack.wsgi): TRACE:     return self._list_view(self.show, request, instances)
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/compute/views/servers.py", line 127, in _list_view
  (nova.api.openstack.wsgi): TRACE:     server_list = [func(request, server)["server"] for server in servers]
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/compute/views/servers.py", line 61, in wrapped
  (nova.api.openstack.wsgi): TRACE:     return func(self, request, instance)
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/compute/views/servers.py", line 97, in show
  (nova.api.openstack.wsgi): TRACE:     "flavor": self._get_flavor(request, instance),
  (nova.api.openstack.wsgi): TRACE:   File "/usr/lib/python2.6/site-packages/nova/api/openstack/compute/views/servers.py", line 172, in _get_flavor
  (nova.api.openstack.wsgi): TRACE:     flavor_id = instance["instance_type"]["flavorid"]
  (nova.api.openstack.wsgi): TRACE: TypeError: 'NoneType' object is unsubscriptable
  (nova.api.openstack.wsgi): TRACE: 
  2012-03-22 14:56:40 INFO nova.api.openstack.wsgi [req-43268d0b-0b3f-451f-b36f-bfcb49b68ff9 ryan test] http://10.10.10.90:8774/v1.1/test/servers/detail returned with
   HTTP 400

  Either users should be blocked from deleting a flavor until all
  instances booted from it terminate, or this should be more robust (I'd
  propose the latter).

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