Public bug reported: This bug is visible when pluggable IPAM is active. It can be seen with this patch [1]. It does not cause gate failures but it is still something that should be understood. This logstash query [2] seems to find where they occur. It is helpful to look at the DEBUG level logging around the time of the error. For example see this paste [3].
It seems that the session gets broken with an exception that causes a rollback. Then, the IPAM rollback attempts to use the same session for rollback which fails. Should the reference pluggable IPAM driver be using a different session? Or, should it call rollback? [1] https://review.openstack.org/#/c/181023 [2] http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22IP%20deallocation%20failed%20on%20external%20system%5C%22 [3] http://paste.openstack.org/show/532891/ ** Affects: neutron Importance: High Status: New ** Tags: l3-ipam-dhcp ** Changed in: neutron Importance: Undecided => High ** Tags added: l3-ipam-dhcp -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1603162 Title: IP deallocation failed on external system with pluggable IPAM Status in neutron: New Bug description: This bug is visible when pluggable IPAM is active. It can be seen with this patch [1]. It does not cause gate failures but it is still something that should be understood. This logstash query [2] seems to find where they occur. It is helpful to look at the DEBUG level logging around the time of the error. For example see this paste [3]. It seems that the session gets broken with an exception that causes a rollback. Then, the IPAM rollback attempts to use the same session for rollback which fails. Should the reference pluggable IPAM driver be using a different session? Or, should it call rollback? [1] https://review.openstack.org/#/c/181023 [2] http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22IP%20deallocation%20failed%20on%20external%20system%5C%22 [3] http://paste.openstack.org/show/532891/ To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1603162/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
