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[OpenStack Infra <1673910@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/447173
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=ce3f96f324b21f8ef3b3a4c02adc678411163a84
Submitter: Jenkins
Branch:    master

commit ce3f96f324b21f8ef3b3a4c02adc678411163a84
Author: Kevin Benton <kevin@xxxxxxxxxx>
Date:   Sat Mar 18 01:06:54 2017 +0000

    Revert "Stop skipping compute owner in Linux Bridge loop"
    
    This reverts commit 1feb19c83ff61a3782ce862d71b8d04e21d7aa00.
    Better fix in I23c5faaeab69aede1fd038a36f4a0b8f928498ce but that
    make take time due to dependency on a nova patch.
    
    Change-Id: Iaa4d85f63cb8e058d09858636ce1434352e39bed
    Closes-Bug: #1673910


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

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https://bugs.launchpad.net/bugs/1673910

Title:
  libvirt racing with linux bridge agent

Status in neutron:
  Fix Released

Bug description:
  We're getting the following error in the gate on linux bridge jobs:

  2017-03-16 15:13:15.984 5903 ERROR oslo_messaging.rpc.server
  libvirtError: Unable to add bridge brq776c3f9c-e6 port tapc5c67a59-f3:
  Device or resource busy

  
  This is caused by the merge of I2a23d0cbc4c4d0db6e9f48d91ca03b5007f91a84 which causes the LB agent to no longer skip compute ports. Even though os-vif has protection from races, it appears that libvirt itself is not robust to the tap being added to the bridge by another process.


  1. http://logs.openstack.org/06/445706/5/gate/gate-tempest-dsvm-
  neutron-linuxbridge-ubuntu-
  xenial/a1314ac/logs/screen-n-cpu.txt.gz?level=TRACE

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