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[Alan Pevec <1238374@xxxxxxxxxxxxxxxxxx>]

** Changed in: nova/havana
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1238374

Title:
  TypeError in periodic task 'update_available_resource'

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) havana series:
  Fix Released

Bug description:
  this occurs while I creating an instance under my devstack env:

  2013-10-11 02:56:29.374 ERROR nova.openstack.common.periodic_task [-] Error during ComputeManager.update_available_resource: 'NoneType' object is not iterable
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task Traceback (most recent call last):
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task   File "/opt/stack/nova/nova/openstack/common/periodic_task.py", line 180, in run_periodic_tasks
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task     task(self, context)
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task   File "/opt/stack/nova/nova/compute/manager.py", line 4859, in update_available_resource
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task     rt.update_available_resource(context)
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task   File "/opt/stack/nova/nova/openstack/common/lockutils.py", line 246, in inner
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task     return f(*args, **kwargs)
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task   File "/opt/stack/nova/nova/compute/resource_tracker.py", line 313, in update_available_resource
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task     self.pci_tracker.clean_usage(instances, migrations, orphans)
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task   File "/opt/stack/nova/nova/pci/pci_manager.py", line 285, in clean_usage
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task     for dev in self.claims.pop(uuid):
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task TypeError: 'NoneType' object is not iterable
  2013-10-11 02:56:29.374 TRACE nova.openstack.common.periodic_task

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