Confusing errors appears after running netns-cleanup with --force attribute

[Toni Freger]

The setup: Controller, Compute and 2 Network nodes
KILO - VRRP on RHEL7.1

Trying to delete all "alive" namespaces (alive - router with attached interface to the network)
The command succeeded but a lot of error messages appears.

 neutron-netns-cleanup --config-file=/etc/neutron/neutron.conf --config-file=/etc/neutron/dhcp_agent.ini --force
2015-06-07 11:41:14.760 2623 INFO neutron.common.config [-] Logging enabled!
2015-06-07 11:41:14.761 2623 INFO neutron.common.config [-] /usr/bin/neutron-netns-cleanup version 2015.1.0
2015-06-07 11:41:16.777 2623 WARNING oslo_config.cfg [-] Option "use_namespaces" from group "DEFAULT" is deprecated for removal. Its value may be silently ignored in the future.
2015-06-07 11:41:17.193 2623 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-0239082e-0817-430f-a183-581cc995da28', 'ip', 'link', 'delete', 'qr-c3e98790-f6']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: Operation not supported

2015-06-07 11:41:17.592 2623 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-0239082e-0817-430f-a183-581cc995da28', 'ip', 'link', 'delete', 'ha-1a34b88b-13']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: Operation not supported

2015-06-07 11:41:18.655 2623 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-c3fb97a3-8547-4008-9360-daa940906da3', 'ip', 'link', 'delete', 'qr-ffdaf269-a2']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: Operation not supported

2015-06-07 11:41:19.052 2623 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-c3fb97a3-8547-4008-9360-daa940906da3', 'ip', 'link', 'delete', 'ha-e4a43b4c-79']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: Operation not supported

2015-06-07 11:41:22.065 2623 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-082e1275-c4d5-445b-a9c3-6bb0b7fe0b6a', 'ip', 'link', 'delete', 'qr-14f1c00c-6a']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: Operation not supported

2015-06-07 11:41:22.490 2623 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-082e1275-c4d5-445b-a9c3-6bb0b7fe0b6a', 'ip', 'link', 'delete', 'qg-72ded7f8-ec']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: Operation not supported

2015-06-07 11:41:22.881 2623 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qrouter-082e1275-c4d5-445b-a9c3-6bb0b7fe0b6a', 'ip', 'link', 'delete', 'ha-9630f5a6-73']
Exit code: 2
Stdin:
Stdout:
Stderr: RTNETLINK answers: Operation not supported

[Miguel Angel Ajo (mangelajo)]

I will go over it with the other netns bug I have for m-2

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/254422

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/254422
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=cfc9578148985f117c230be263d9faab4c1bb57e
Submitter: Jenkins
Branch: master

commit cfc9578148985f117c230be263d9faab4c1bb57e
Author: Assaf Muller <email address hidden>
Date: Mon Dec 7 17:36:06 2015 -0500

    Don't emit confusing error in netns-cleanup

    If we're trying to delete a dhcp/qrouter device with use_veth
    = False (Which is the default for some time), we'll first
    try to 'ip link del %s', which will fail and emit a confusing
    error, then try 'ovs-vsctl del-port'. There's no need to
    log an error in such a case.

    The patch attempts to future proof by setting the
    set_log_fail_as_error(False) to be as tight as possible, so we
    do log errors in case the device is somehow used in the future.

    Change-Id: I1954bde3ee9a2e43d7615717134b61c5fa7cfbb1
    Closes-Bug: #1463800

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/liberty
Review: https://review.openstack.org/254975

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/kilo
Review: https://review.openstack.org/254976

[Thierry Carrez (ttx)]

This issue was fixed in the openstack/neutron 8.0.0.0b2 development milestone.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Armando Migliaccio (<email address hidden>) on branch: stable/kilo
Review: https://review.openstack.org/254976
Reason: This review is > 4 weeks without comment, and failed Jenkins the last time it was checked. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and leaving a 'recheck' comment to get fresh test results.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Armando Migliaccio (<email address hidden>) on branch: stable/liberty
Review: https://review.openstack.org/254975
Reason: This review is > 4 weeks without comment, and failed Jenkins the last time it was checked. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and leaving a 'recheck' comment to get fresh test results.