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[Slawek Kaplonski <1852724@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Example of failure:
https://b56892e10e3e61a452c2-e4b54cf82b19c70bded9dbfe71e9b8f5.ssl.cf2.rackcdn.com/601336/41/check
/neutron-fullstack/cfd8a8e/testr_results.html.gz

Stacktrace:
ft3.2: neutron.tests.fullstack.test_qos.TestDscpMarkingQoSLinuxbridge.test_dscp_marking_packetstesttools.testresult.real._StringException: Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 181, in func
    return f(self, *args, **kwargs)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/fullstack/test_qos.py", line 498, in test_dscp_marking_packets
    sender, receiver, DSCP_MARK)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/agents/l2_extensions.py", line 117, in wait_for_dscp_marked_packet
    time.sleep(0.25)
  File "/usr/lib/python3.6/contextlib.py", line 88, in __exit__
    next(self.gen)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/net_helpers.py", line 144, in async_ping
    f.result()
  File "/usr/lib/python3.6/concurrent/futures/_base.py", line 425, in result
    return self.__get_result()
  File "/usr/lib/python3.6/concurrent/futures/_base.py", line 384, in __get_result
    raise self._exception
  File "/usr/lib/python3.6/concurrent/futures/thread.py", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/net_helpers.py", line 127, in assert_async_ping
    dst_ip])
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/ip_lib.py", line 713, in execute
    run_as_root=run_as_root)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/utils.py", line 147, in execute
    returncode=returncode)
neutron_lib.exceptions.ProcessExecutionError: Exit code: 1; Stdin: ; Stdout: PING 10.0.0.115 (10.0.0.115) 56(84) bytes of data.

--- 10.0.0.115 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

; Stderr:

And it happens even when first ICMP packet isn't send properly from sender to receiver vm.
We should wait 60 seconds for ICMP packets before fail test.

** Affects: neutron
     Importance: Medium
     Assignee: Slawek Kaplonski (slaweq)
         Status: Confirmed


** Tags: fullstack gate-failure

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https://bugs.launchpad.net/bugs/1852724

Title:
  Fullstack test for dscp_marking_packets fails if first icmp is not
  send properly

Status in neutron:
  Confirmed

Bug description:
  Example of failure:
  https://b56892e10e3e61a452c2-e4b54cf82b19c70bded9dbfe71e9b8f5.ssl.cf2.rackcdn.com/601336/41/check
  /neutron-fullstack/cfd8a8e/testr_results.html.gz

  Stacktrace:
  ft3.2: neutron.tests.fullstack.test_qos.TestDscpMarkingQoSLinuxbridge.test_dscp_marking_packetstesttools.testresult.real._StringException: Traceback (most recent call last):
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 181, in func
      return f(self, *args, **kwargs)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/fullstack/test_qos.py", line 498, in test_dscp_marking_packets
      sender, receiver, DSCP_MARK)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/agents/l2_extensions.py", line 117, in wait_for_dscp_marked_packet
      time.sleep(0.25)
    File "/usr/lib/python3.6/contextlib.py", line 88, in __exit__
      next(self.gen)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/net_helpers.py", line 144, in async_ping
      f.result()
    File "/usr/lib/python3.6/concurrent/futures/_base.py", line 425, in result
      return self.__get_result()
    File "/usr/lib/python3.6/concurrent/futures/_base.py", line 384, in __get_result
      raise self._exception
    File "/usr/lib/python3.6/concurrent/futures/thread.py", line 56, in run
      result = self.fn(*self.args, **self.kwargs)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/common/net_helpers.py", line 127, in assert_async_ping
      dst_ip])
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/ip_lib.py", line 713, in execute
      run_as_root=run_as_root)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/utils.py", line 147, in execute
      returncode=returncode)
  neutron_lib.exceptions.ProcessExecutionError: Exit code: 1; Stdin: ; Stdout: PING 10.0.0.115 (10.0.0.115) 56(84) bytes of data.

  --- 10.0.0.115 ping statistics ---
  1 packets transmitted, 0 received, 100% packet loss, time 0ms

  ; Stderr:

  And it happens even when first ICMP packet isn't send properly from sender to receiver vm.
  We should wait 60 seconds for ICMP packets before fail test.

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