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[OpenStack Infra <1902678@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/761202
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=ad0605f9c3cced115c829c57dbeb0ee96b5ad8bb
Submitter: Zuul
Branch:    master

commit ad0605f9c3cced115c829c57dbeb0ee96b5ad8bb
Author: Rodolfo Alonso Hernandez <ralonsoh@xxxxxxxxxx>
Date:   Tue Nov 3 17:05:36 2020 +0000

    Add process name to AsyncProcess
    
    Since [1], Neutron sets the name of some processes (Neutron agents).
    The "ps" output is modified consequently according to the defined
    string:
      "<process name> (<process command>)"
    
    "AsyncProcess" class should use the process name to parse the "ps"
    output correctly.
    
    Closes-Bug: #1902678
    
    [1]https://review.opendev.org/#/c/735125/
    
    Change-Id: If33c49c0f3e1e6696f5d2aa4008b287dc3f76c61


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1902678

Title:
  [Fullstack] Wrong output of the cmdline causes tests timeouts

Status in neutron:
  Fix Released

Bug description:
  For example in job https://5d606ad52f952ad04ada-9bb15fccd6d6016f8ed327d788485601.ssl.cf5.rackcdn.com/759555/1/check/neutron-fullstack-with-uwsgi/22fa5fc/job-output.txt most tests were failed due to timeout waiting for the dhcp_agent to be running.
  Problem is that agent was running but cmdline output was different then expected.
  In the broken test it was:

  2020-11-02 12:36:22.643 61765 DEBUG neutron.agent.linux.utils [-]
  Found cmdline ['neutron-dhcp-agent', '(python',
  '/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/fullstack/agents/dhcp_agent.py',
  '--log-dir', '/opt/stack/logs/dsvm-fullstack-
  logs/TestLegacyL3Agent.test_north_south_traffic', '--log-file',
  'neutron-dhcp-agent--2020-11-02--12-35-55-239343.log', '--config-
  file', '/tmp/tmpi4gwk4d5/tmpbrimapun/neutron.conf', '--config-file',
  '/tmp/tmpi4gwk4d5/tmpbrimapun/dhcp_agent.ini)'] for process with PID
  97892. get_cmdline_from_pid
  /home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/utils.py:345

  And in passing test it is something like:

  2020-10-31 01:33:08.095 61708 DEBUG neutron.agent.linux.utils [-]
  Found cmdline ['python',
  '/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/fullstack/agents/dhcp_agent.py',
  '--log-dir', '/opt/stack/logs/dsvm-fullstack-
  logs/TestLegacyL3Agent.test_north_south_traffic', '--log-file',
  'neutron-dhcp-agent--2020-10-31--01-33-07-081219.log', '--config-
  file', '/tmp/tmpxm4m9paq/tmppk8ro3le/neutron.conf', '--config-file',
  '/tmp/tmpxm4m9paq/tmppk8ro3le/dhcp_agent.ini'] for process with PID
  134342. get_cmdline_from_pid
  /home/zuul/src/opendev.org/openstack/neutron/neutron/agent/linux/utils.py:345

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