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[yatin <2119453@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The test fails randomly as:-
ft1.1: neutron.tests.functional.agent.ovn.agent.test_ovn_neutron_agent.TestOVNNeutronAgentFakeAgent.test_ovs_and_ovs_eventstesttools.testresult.real._StringException: Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 178, in func
    return f(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/functional/agent/ovn/agent/test_ovn_neutron_agent.py", line 137, in test_ovs_and_ovs_events
    n_utils.wait_until_true(
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 736, in wait_until_true
    raise exception if exception else WaitTimeout(
Exception: Bridge <neutron.agent.common.ovs_lib.OVSBridge object at 0x7cf34167ea20> not added or not detected by OVSInterfaceEvent

Example failures
- https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_cd5/openstack/cd55f234d96d48afaf378c6effd621f5/testr_results.html
- https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_71d/openstack/71d70400abaf4e49aceedbaa8313737d/testr_results.html
- https://4003c0d177bb43a96479-a4b65a276fc5e547c0bc853763d21da9.ssl.cf2.rackcdn.com/openstack/16e2ee26340140b390289ad9f204a551/testr_results.html
- https://0740c1f4685ccde5d553-ea8eedd91454e7f5ed51aea65091aac2.ssl.cf5.rackcdn.com/openstack/ca3c7d19ffc64195bd7f384c4e50ff41/testr_results.html

Looks it's triggered by patches in chain
https://review.opendev.org/c/openstack/neutron/+/956173 as first time
was seen in these.

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: functional-tests gate-failure

** Tags added: functional-tests gate-failure

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https://bugs.launchpad.net/bugs/2119453

Title:
  [FT][master] test_ovs_and_ovs_events fails randomly

Status in neutron:
  New

Bug description:
  The test fails randomly as:-
  ft1.1: neutron.tests.functional.agent.ovn.agent.test_ovn_neutron_agent.TestOVNNeutronAgentFakeAgent.test_ovs_and_ovs_eventstesttools.testresult.real._StringException: Traceback (most recent call last):
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 178, in func
      return f(self, *args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/functional/agent/ovn/agent/test_ovn_neutron_agent.py", line 137, in test_ovs_and_ovs_events
      n_utils.wait_until_true(
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 736, in wait_until_true
      raise exception if exception else WaitTimeout(
  Exception: Bridge <neutron.agent.common.ovs_lib.OVSBridge object at 0x7cf34167ea20> not added or not detected by OVSInterfaceEvent

  Example failures
  - https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_cd5/openstack/cd55f234d96d48afaf378c6effd621f5/testr_results.html
  - https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_71d/openstack/71d70400abaf4e49aceedbaa8313737d/testr_results.html
  - https://4003c0d177bb43a96479-a4b65a276fc5e547c0bc853763d21da9.ssl.cf2.rackcdn.com/openstack/16e2ee26340140b390289ad9f204a551/testr_results.html
  - https://0740c1f4685ccde5d553-ea8eedd91454e7f5ed51aea65091aac2.ssl.cf5.rackcdn.com/openstack/ca3c7d19ffc64195bd7f384c4e50ff41/testr_results.html

  Looks it's triggered by patches in chain
  https://review.opendev.org/c/openstack/neutron/+/956173 as first time
  was seen in these.

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