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[OpenStack Infra <1617447@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/361526
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=ab61970644086de392f12d6d6a054ca85fb6e5d7
Submitter: Jenkins
Branch:    master

commit ab61970644086de392f12d6d6a054ca85fb6e5d7
Author: Kevin Benton <kevin@xxxxxxxxxx>
Date:   Fri Aug 26 16:36:20 2016 -0700

    Make addbr safe to bridge add races
    
    This makes the code that constructs a bridge safe to concurrent
    additions of the same bridge.
    
    Change-Id: I3c85731de6b6d07af54ace5f8d835f01a366f5b3
    Closes-Bug: #1617447


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

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https://bugs.launchpad.net/bugs/1617447

Title:
  InterfaceAttachFailed: Failed to attach network adapter device

Status in neutron:
  Fix Released
Status in OpenStack Compute (nova):
  New
Status in os-vif:
  In Progress

Bug description:
  This looks it shows in the gate on a master branch change:

  http://logs.openstack.org/04/353704/9/gate/gate-tempest-dsvm-neutron-
  linuxbridge/e6ca9f3/console.html#_2016-08-26_19_50_16_384253

  http://logs.openstack.org/04/353704/9/gate/gate-tempest-dsvm-neutron-
  linuxbridge/e6ca9f3/logs/screen-n-cpu.txt.gz?level=TRACE#_2016-08-26_19_36_06_377

  http://paste.openstack.org/show/564060/

  The root cause:

  2016-08-26 19:36:06.377 24801 ERROR os_vif Stderr: u"device
  brqd7d244e3-06 already exists; can't create bridge with the same
  name\n"

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