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[Ghanshyam Mann <gmann@xxxxxxxxxxxxxxxxx>]

which change in queens s incompatible? that will help to understand the
issue completely.

Also queens is EM now and I am in progress to officially end the support
of queens in Tempest[1]. After doing the release for Tempest, and based
on change broke the Tempest queens we can pin the Tempest on devstack
like we did for pike and ocata. There we can handle the upper-contraint
things also as i mentioned in other bug
(https://bugs.launchpad.net/neutron/+bug/1860033) otherwise pining alone
would not solve the bug.


[1] https://review.opendev.org/#/c/703255/ 

** Also affects: tempest
   Importance: Undecided
       Status: New

** Also affects: devstack
   Importance: Undecided
       Status: New

** Changed in: tempest
     Assignee: (unassigned) => Ghanshyam Mann (ghanshyammann)

** Changed in: tempest
   Importance: Undecided => Critical

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https://bugs.launchpad.net/bugs/1859988

Title:
  neutron-tempest-plugin tests fail for stable/queens

Status in devstack:
  New
Status in neutron:
  In Progress
Status in tempest:
  New

Bug description:
  Recent stable/queens backport fail on neutron-tempest-plugin scenario tests, sample here:
  https://c896d480cfbd9dee637c-6e2dfe610262db0cf157ed36bc183b08.ssl.cf2.rackcdn.com/688719/5/check/neutron-tempest-plugin-scenario-openvswitch-queens/f080f61/testr_results.html

  Traceback (most recent call last):
    File "tempest/common/utils/__init__.py", line 108, in wrapper
      return func(*func_args, **func_kwargs)
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/neutron_tempest_plugin/scenario/test_internal_dns.py", line 72, in test_dns_domain_and_name
      timeout=CONF.validation.ping_timeout * 10)
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/neutron_tempest_plugin/scenario/base.py", line 309, in check_remote_connectivity
      timeout=timeout))
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/neutron_tempest_plugin/scenario/base.py", line 299, in _check_remote_connectivity
      ping_remote, timeout or CONF.validation.ping_timeout, 1)
    File "tempest/lib/common/utils/test_utils.py", line 107, in call_until_true
      if func(*args, **kwargs):
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/neutron_tempest_plugin/scenario/base.py", line 283, in ping_remote
      fragmentation=fragmentation)
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/neutron_tempest_plugin/scenario/base.py", line 278, in ping_host
      return source.exec_command(cmd)
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/tenacity/__init__.py", line 311, in wrapped_f
      return self.call(f, *args, **kw)
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/tenacity/__init__.py", line 391, in call
      do = self.iter(retry_state=retry_state)
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/tenacity/__init__.py", line 338, in iter
      return fut.result()
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/concurrent/futures/_base.py", line 455, in result
      return self.__get_result()
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/tenacity/__init__.py", line 394, in call
      result = fn(*args, **kwargs)
    File "/opt/stack/tempest/.tox/tempest/local/lib/python2.7/site-packages/neutron_tempest_plugin/common/ssh.py", line 205, in exec_command
      return super(Client, self).exec_command(cmd=cmd, encoding=encoding)
    File "tempest/lib/common/ssh.py", line 153, in exec_command
      with transport.open_session() as channel:
  AttributeError: 'NoneType' object has no attribute 'open_session'

  
  Queens jobs were pinned to 0.7.0 version of the plugin in a4962ec62808fc469eaad73b1408447d8e3bc7ec it looks like we now need to also pin tempest itself to a "queens version"

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