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[Launchpad Bug Tracker <1813959@xxxxxxxxxxxxxxxxxx>]

[Expired for neutron because there has been no activity for 60 days.]

** Changed in: neutron
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1813959

Title:
  test_hotplug_nic intermittently fails teardown due to "One or more
  ports have an IP allocation from this subnet."

Status in neutron:
  Expired

Bug description:
  Seen here:

  http://logs.openstack.org/92/627892/9/check/nova-next/d402065/job-
  output.txt.gz#_2019-01-30_03_05_59_790327

  2019-01-30 03:05:59.790327 | primary | Captured traceback-1:
  2019-01-30 03:05:59.790348 | primary | ~~~~~~~~~~~~~~~~~~~~~
  2019-01-30 03:05:59.790375 | primary |     Traceback (most recent call last):
  2019-01-30 03:05:59.790440 | primary |       File "tempest/lib/common/utils/test_utils.py", line 84, in call_and_ignore_notfound_exc
  2019-01-30 03:05:59.790467 | primary |         return func(*args, **kwargs)
  2019-01-30 03:05:59.790518 | primary |       File "tempest/lib/services/network/subnets_client.py", line 52, in delete_subnet
  2019-01-30 03:05:59.790549 | primary |         return self.delete_resource(uri)
  2019-01-30 03:05:59.790607 | primary |       File "tempest/lib/services/network/base.py", line 41, in delete_resource
  2019-01-30 03:05:59.790636 | primary |         resp, body = self.delete(req_uri)
  2019-01-30 03:05:59.790688 | primary |       File "tempest/lib/common/rest_client.py", line 311, in delete
  2019-01-30 03:05:59.790733 | primary |         return self.request('DELETE', url, extra_headers, headers, body)
  2019-01-30 03:05:59.790774 | primary |       File "tempest/lib/common/rest_client.py", line 676, in request
  2019-01-30 03:05:59.790805 | primary |         self._error_checker(resp, resp_body)
  2019-01-30 03:05:59.790850 | primary |       File "tempest/lib/common/rest_client.py", line 797, in _error_checker
  2019-01-30 03:05:59.790885 | primary |         raise exceptions.Conflict(resp_body, resp=resp)
  2019-01-30 03:05:59.790930 | primary |     tempest.lib.exceptions.Conflict: Conflict with state of target resource
  2019-01-30 03:05:59.791051 | primary |     Details: {u'detail': u'', u'type': u'SubnetInUse', u'message': u'Unable to complete operation on subnet e6e7e892-bd6b-453b-9e6f-08d889c83190: One or more ports have an IP allocation from this subnet.'}

  From the server logs:

  http://logs.openstack.org/92/627892/9/check/nova-
  next/d402065/logs/screen-q-svc.txt.gz#_Jan_30_03_05_44_715787

  Jan 30 03:05:44.715787 ubuntu-xenial-ovh-bhs1-0002242443 neutron-
  server[25564]: INFO neutron.db.db_base_plugin_v2 [None req-
  62a95088-0965-4d58-a43d-6450fee48399 tempest-
  TestNetworkBasicOps-1823641274 tempest-TestNetworkBasicOps-1823641274]
  Found port (3080b6d8-f622-496b-a749-0b7def78fb6c, 10.1.0.26) having IP
  allocation on subnet e6e7e892-bd6b-453b-9e6f-08d889c83190, cannot
  delete

  My guess is it's a timing issue during the delete and we're maybe not
  waiting long enough in tempest? Unless something failed when trying to
  delete port 3080b6d8-f622-496b-a749-0b7def78fb6c?

  http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22Body%3A%5C%22%20AND%20message%3A%5C%22%3A%20One%20or%20more%20ports%20have%20an%20IP%20allocation%20from%20this%20subnet%5C%22%20AND%20tags%3A%5C%22console%5C%22&from=7d

  15 hits in 7 days, check and gate, all failures.

  I want to say I've seen this before in the gate but couldn't find an
  existing bug for it, unless it was already fixed once and this is a
  regression.

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