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[Rodolfo Alonso <ralonsoh@xxxxxxxxxx>]

Public bug reported:

A recurrent error, from time to time, in the CI. When a Linux interface
is being created, the test case raises a timeout exception.

This is happening during the execution of
https://github.com/openstack/neutron/blob/ac63c570a1c630ac4405e4caf3d516d069165d69/neutron/agent/linux/bridge_lib.py#L63.


Logs: https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_ea8/677092/11/check/neutron-functional/ea8fe46/testr_results.html.gz


Error:
Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/fixtures/fixture.py", line 197, in setUp
    self._setUp()
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/net_helpers.py", line 882, in _setUp
    self.bridge = self._create_bridge()
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/net_helpers.py", line 909, in _create_bridge
    namespace=self.namespace)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/base.py", line 47, in create_resource
    return creation_func(name, *args, **kwargs)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/bridge_lib.py", line 63, in addbr
    bridge.link.create()
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/ip_lib.py", line 470, in create
    self.kind)
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/oslo_privsep/priv_context.py", line 245, in _wrap
    return self.channel.remote_call(name, args, kwargs)
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/oslo_privsep/daemon.py", line 194, in remote_call
    result = self.send_recv((Message.CALL.value, name, args, kwargs))
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/oslo_privsep/comm.py", line 171, in send_recv
    reply = future.result()
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/oslo_privsep/comm.py", line 108, in result
    self.condvar.wait()
  File "/usr/lib/python3.6/threading.py", line 295, in wait
    waiter.acquire()
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/semaphore.py", line 115, in acquire
    hubs.get_hub().switch()
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/hubs/hub.py", line 298, in switch
    return self.greenlet.switch()
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/hubs/hub.py", line 350, in run
    self.wait(sleep_time)
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/hubs/poll.py", line 80, in wait
    presult = self.do_poll(seconds)
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/hubs/epolls.py", line 31, in do_poll
    return self.poll.poll(seconds)
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/fixtures/_fixtures/timeout.py", line 52, in signal_handler
    raise TimeoutException()
fixtures._fixtures.timeout.TimeoutException

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1858661

Title:
  Error when creating a Linux interface

Status in neutron:
  New

Bug description:
  A recurrent error, from time to time, in the CI. When a Linux
  interface is being created, the test case raises a timeout exception.

  This is happening during the execution of
  https://github.com/openstack/neutron/blob/ac63c570a1c630ac4405e4caf3d516d069165d69/neutron/agent/linux/bridge_lib.py#L63.

  
  Logs: https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_ea8/677092/11/check/neutron-functional/ea8fe46/testr_results.html.gz

  
  Error:
  Traceback (most recent call last):
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/fixtures/fixture.py", line 197, in setUp
      self._setUp()
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/net_helpers.py", line 882, in _setUp
      self.bridge = self._create_bridge()
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/net_helpers.py", line 909, in _create_bridge
      namespace=self.namespace)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/base.py", line 47, in create_resource
      return creation_func(name, *args, **kwargs)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/bridge_lib.py", line 63, in addbr
      bridge.link.create()
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/ip_lib.py", line 470, in create
      self.kind)
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/oslo_privsep/priv_context.py", line 245, in _wrap
      return self.channel.remote_call(name, args, kwargs)
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/oslo_privsep/daemon.py", line 194, in remote_call
      result = self.send_recv((Message.CALL.value, name, args, kwargs))
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/oslo_privsep/comm.py", line 171, in send_recv
      reply = future.result()
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/oslo_privsep/comm.py", line 108, in result
      self.condvar.wait()
    File "/usr/lib/python3.6/threading.py", line 295, in wait
      waiter.acquire()
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/semaphore.py", line 115, in acquire
      hubs.get_hub().switch()
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/hubs/hub.py", line 298, in switch
      return self.greenlet.switch()
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/hubs/hub.py", line 350, in run
      self.wait(sleep_time)
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/hubs/poll.py", line 80, in wait
      presult = self.do_poll(seconds)
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/eventlet/hubs/epolls.py", line 31, in do_poll
      return self.poll.poll(seconds)
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.6/site-packages/fixtures/_fixtures/timeout.py", line 52, in signal_handler
      raise TimeoutException()
  fixtures._fixtures.timeout.TimeoutException

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