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[Perry <panxia6679@xxxxxxxx>]

Public bug reported:

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

** Affects: neutron
     Importance: Undecided
     Assignee: Perry (panxia6679)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => Perry (panxia6679)

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

Title:
  delete router with error of  failed unplugging ha interface

Status in neutron:
  New

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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