Reviewed:  https://review.openstack.org/423608
Committed: 
https://git.openstack.org/cgit/openstack/nova/commit/?id=8d11cba5edcb71b530ea9af3afa697870bcfac3a
Submitter: Jenkins
Branch:    master

commit 8d11cba5edcb71b530ea9af3afa697870bcfac3a
Author: Moshe Levi <[email protected]>
Date:   Sat Jan 21 11:27:36 2017 +0200

    PCI: Check pci_requests object is empty before passing to support_requests
    
    This commit checks that InstancePCIRequests is empty before
    passing it to the pci_stats.support_requests.
    This prevents doing the support request check for host_state
    which don't have pci_stats like ironic host.
    
    Closes-Bug: #1658078
    
    Change-Id: Ie6d870729883e2bbdc3278c52e88d147613712f6


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1658078

Title:
  AttributeError: 'NoneType' object has no attribute 'support_requests'

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  When the compute is ironic driver  and the shceduler is configured with 
  pci passthrough filter the vm get to an error state and we can see the 
following error in the scheduler

  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server 
[req-d627c45c-a5cf-47bc-a8d1-fe4669516380 admin admin] Exception during message 
handling
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server Traceback 
(most recent call last):
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 
155, in _process_incoming
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     res = 
self.dispatcher.dispatch(message)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 
222, in dispatch
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     return 
self._do_dispatch(endpoint, method, ctxt, args)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 
192, in _do_dispatch
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     result = 
func(ctxt, **new_args)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 
218, in inner
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     return 
func(*args, **kwargs)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/opt/stack/nova/nova/scheduler/manager.py", line 84, in select_destinations
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     dests = 
self.driver.select_destinations(ctxt, spec_obj)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/opt/stack/nova/nova/scheduler/filter_scheduler.py", line 51, in 
select_destinations
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     
selected_hosts = self._schedule(context, spec_obj)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/opt/stack/nova/nova/scheduler/filter_scheduler.py", line 103, in _schedule
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     spec_obj, 
index=num)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/opt/stack/nova/nova/scheduler/host_manager.py", line 572, in 
get_filtered_hosts
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     hosts, 
spec_obj, index)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/opt/stack/nova/nova/filters.py", line 89, in get_filtered_objects
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     list_objs 
= list(objs)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/opt/stack/nova/nova/filters.py", line 44, in filter_all
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     if 
self._filter_one(obj, spec_obj):
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/opt/stack/nova/nova/scheduler/filters/__init__.py", line 26, in _filter_one
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     return 
self.host_passes(obj, filter_properties)
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server   File 
"/opt/stack/nova/nova/scheduler/filters/pci_passthrough_filter.py", line 48, in 
host_passes
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server     if not 
host_state.pci_stats.support_requests(pci_requests.requests):
  2017-01-19 06:00:35.887 105364 ERROR oslo_messaging.rpc.server 
AttributeError: 'NoneType' object has no attribute 'support_requests'

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