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[OpenStack Infra <1617447@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/361516
Committed: https://git.openstack.org/cgit/openstack/os-vif/commit/?id=c25ce5a852d97f8159e77cb7ed71df31c482ce76
Submitter: Jenkins
Branch:    master

commit c25ce5a852d97f8159e77cb7ed71df31c482ce76
Author: Kevin Benton <kevin@xxxxxxxxxx>
Date:   Fri Aug 26 15:56:24 2016 -0700

    Check for concurrent bridge creation in bridge add
    
    With Linux bridge, either Neutron or Nova may create the bridge
    associated with a network so this process must be robust to
    concurrent creations of the same bridge.
    
    This change just has the addbr call capture exceptions and avoid
    reraising if the device already exists.
    
    Closes-Bug: #1617447
    Change-Id: Ib0266086e0caffecf3f9f2a8291369cfa155f386


** Changed in: os-vif
       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:
  Fix Released

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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