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[Matt Riedemann <mriedem@xxxxxxxxxx>]

** Also affects: nova/newton
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1612875

Title:
  FixedIPsTestJson fails server build with "was re-scheduled: operation
  failed: filter 'nova-no-nd-reflection' already exists with uuid"

Status in OpenStack Compute (nova):
  In Progress
Status in OpenStack Compute (nova) newton series:
  New

Bug description:
  Seen here:

  http://logs.openstack.org/98/355098/1/check/gate-tempest-dsvm-full-
  ubuntu-
  xenial/3c301f3/logs/screen-n-cond.txt.gz?level=TRACE#_2016-08-13_00_53_27_621

  2016-08-13 00:53:27.621 15971 ERROR nova.scheduler.utils [req-e7b83619-01ae-43f2-b293-af02c5cb35a8 tempest-FixedIPsTestJson-2017152444 tempest-FixedIPsTestJson-2017152444] [instance: ac2c9a4a-1b07-43e1-8f4c-b75541331307] Error from last host: ubuntu-xenial-rax-ord-3453779 (node ubuntu-xenial-rax-ord-3453779): [u'Traceback (most recent call last):\n', u'  File "/opt/stack/new/nova/nova/compute/manager.py", line 1778, in _do_build_and_run_instance\n    filter_properties)\n', u'  File "/opt/stack/new/nova/nova/compute/manager.py", line 1973, in _build_and_run_instance\n    instance_uuid=instance.uuid, reason=six.text_type(e))\n', u"RescheduledException: Build of instance ac2c9a4a-1b07-43e1-8f4c-b75541331307 was re-scheduled: operation failed: filter 'nova-no-nd-reflection' already exists with uuid 1f47eeb2-d473-481e-998a-c4d64a44ac5e\n"]
  2016-08-13 00:53:27.676 15971 WARNING nova.scheduler.utils [req-e7b83619-01ae-43f2-b293-af02c5cb35a8 tempest-FixedIPsTestJson-2017152444 tempest-FixedIPsTestJson-2017152444] Failed to compute_task_build_instances: No valid host was found. There are not enough hosts available.
  Traceback (most recent call last):

    File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 199, in inner
      return func(*args, **kwargs)

    File "/opt/stack/new/nova/nova/scheduler/manager.py", line 104, in select_destinations
      dests = self.driver.select_destinations(ctxt, spec_obj)

    File "/opt/stack/new/nova/nova/scheduler/filter_scheduler.py", line 74, in select_destinations
      raise exception.NoValidHost(reason=reason)

  NoValidHost: No valid host was found. There are not enough hosts
  available.

  2016-08-13 00:53:27.676 15971 WARNING nova.scheduler.utils [req-
  e7b83619-01ae-43f2-b293-af02c5cb35a8 tempest-
  FixedIPsTestJson-2017152444 tempest-FixedIPsTestJson-2017152444]
  [instance: ac2c9a4a-1b07-43e1-8f4c-b75541331307] Setting instance to
  ERROR state.

  http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22was
  %20re-scheduled%3A%20operation%20failed%3A%20filter%20'nova-no-nd-
  reflection'%20already%20exists%20with%20uuid%5C%22%20AND%20tags%3A%5C%22screen-n-cond.txt%5C%22&from=7d

  5 hits in 7 days, check queue only, but multiple changes.

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