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Reviewed:  https://review.openstack.org/379908
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=bc03048134f12df47e1e619d21ba394db9c52dc1
Submitter: Jenkins
Branch:    master

commit bc03048134f12df47e1e619d21ba394db9c52dc1
Author: Perry Zou <panxia6679@xxxxxxxx>
Date:   Fri Sep 30 02:42:56 2016 +0000

    Fix "failed unplugging ha interface" error when deleting router
    
    Deleting router namespaces happens before deleting router ha interface.
    So it will fail when deleting router ha interface. The change
    is to remove router ha interface before deleting router namespace.
    
    Change-Id: I3d936701c9dac7671f12e1966449662988a0f26a
    Closes-Bug: #1629159
    Related-Bug: #1488730


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

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https://bugs.launchpad.net/bugs/1629159

Title:
  delete router with error of  failed unplugging ha interface

Status in neutron:
  Fix Released

Bug description:
  When deleting a Router, there are ERROR logs of failed unplugging ha
  interface. This happens in  environment with stable/mitaka. What needs
  to note is that router could be deleted successfully after the ERROR.

  Reproduce steps:
  neutron router-create test
  neutron router-delete test
  monitor log in neutron-l3-agent.log

  This problem is different from existing defects. some existing defect
  addressed problem of looping deleting router. some addressed problem
  of race between router sync and router deleting. And some defect has
  similar symptom which happened on different place,  such as bug
  1606801.


  2016-09-29 06:57:11.744 6287 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', '/usr/local/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'delete', 'qrouter-74c4a209-2f42-4f45-b409-082939df0962'] create_process /opt/bbc/openstack-2016.1-bbc234/neutron/local/lib/python2.7/site-packages/neutron/agent/linux/utils.py:84
  2016-09-29 06:57:11.835 6287 DEBUG neutron.agent.linux.utils [-] Exit code: 0 execute /opt/bbc/openstack-2016.1-bbc234/neutron/local/lib/python2.7/site-packages/neutron/agent/linux/utils.py:142
  2016-09-29 06:57:11.836 6287 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', '/usr/local/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'kill', '-9', '10728'] create_process /opt/bbc/openstack-2016.1-bbc234/neutron/local/lib/python2.7/site-packages/neutron/agent/linux/utils.py:84
  2016-09-29 06:57:11.897 6287 DEBUG neutron.agent.linux.utils [-] Exit code: 0 execute /opt/bbc/openstack-2016.1-bbc234/neutron/local/lib/python2.7/site-packages/neutron/agent/linux/utils.py:142
  2016-09-29 06:57:11.898 6287 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', '/usr/local/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-74c4a209-2f42-4f45-b409-082939df0962', 'ip', 'link', 'delete', 'ha-e210e603-0c'] create_process /opt/bbc/openstack-2016.1-bbc234/neutron/local/lib/python2.7/site-packages/neutron/agent/linux/utils.py:84
  2016-09-29 06:57:11.961 6287 ERROR neutron.agent.linux.utils [-] Exit code: 1; Stdin: ; Stdout: ; Stderr: Cannot open network namespace "qrouter-74c4a209-2f42-4f45-b409-082939df0962": No such file or directory

  2016-09-29 06:57:11.962 6287 ERROR neutron.agent.linux.interface [-] Failed unplugging interface 'ha-e210e603-0c'
  2016-09-29 06:57:11.962 6287 DEBUG neutron.agent.linux.utils [-] Running command: ['sudo', '/usr/local/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'kill', '-15', '10910'] create_process /opt/bbc/openstack-2016.1-bbc234/neutron/local/lib/python2.7/site-packages/neutron/agent/linux/utils.py:84

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