neutron

ovn-controller cannot connect to the integration bridge with OVS 2.12 and later

Bug #1890596 reported by Jakub Libosvar
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
neutron
Fix Released
High
Jakub Libosvar

Bug Description

There is a bug in OVS 2.12 and later where protocols cannot be set after bridge is created. OVS agents set explicitly OpenFlow protocols but there is a mismatch with ovn-controller. That means even though the migration process resets the protocols, because of the OVS bug https://bugzilla.redhat.com/show_bug.cgi?id=1782834 ovn-controller can't connect.

Jakub Libosvar (libosvar)
Changed in neutron:
assignee: nobody → Jakub Libosvar (libosvar)
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (master)

Fix proposed to branch: master
Review: https://review.opendev.org/745122

Changed in neutron:
status: New → In Progress
Slawek Kaplonski (slaweq)
tags: added: ovn
Changed in neutron:
importance: Undecided → High
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (master)

Reviewed: https://review.opendev.org/745122
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=4ad21fd23ae648536c4f07f980e9e156b5c41421
Submitter: Zuul
Branch: master

commit 4ad21fd23ae648536c4f07f980e9e156b5c41421
Author: Jakub Libosvar <email address hidden>
Date: Thu Aug 6 14:47:24 2020 +0200

    migration: Restart OVS after setting protocols

    This patch is a workaround for bug in OVS [1]. The OVS is restarted
    after setting protocols for the integration bridge. This will cause
    a data plane disruption. We can remove the workaround once
    the bug [1] is fixed.

    Closes-bug: #1890596

    [1] https://bugzilla.redhat.com/show_bug.cgi?id=1782834

    Change-Id: Ia635f705fa03036a9e9c1c14eab59038ec39bda3
    Signed-off-by: Jakub Libosvar <email address hidden>

Changed in neutron:
status: In Progress → Fix Released
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (stable/ussuri)

Fix proposed to branch: stable/ussuri
Review: https://review.opendev.org/745484

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (stable/ussuri)

Reviewed: https://review.opendev.org/745484
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=b468514e99b9fcb4e0cee962a2e67f70a0ab9f24
Submitter: Zuul
Branch: stable/ussuri

commit b468514e99b9fcb4e0cee962a2e67f70a0ab9f24
Author: Jakub Libosvar <email address hidden>
Date: Thu Aug 6 14:47:24 2020 +0200

    migration: Restart OVS after setting protocols

    This patch is a workaround for bug in OVS [1]. The OVS is restarted
    after setting protocols for the integration bridge. This will cause
    a data plane disruption. We can remove the workaround once
    the bug [1] is fixed.

    Closes-bug: #1890596

    [1] https://bugzilla.redhat.com/show_bug.cgi?id=1782834

    Change-Id: Ia635f705fa03036a9e9c1c14eab59038ec39bda3
    Signed-off-by: Jakub Libosvar <email address hidden>
    (cherry picked from commit 4ad21fd23ae648536c4f07f980e9e156b5c41421)

tags: added: in-stable-ussuri
Bernard Cafarelli (bcafarel)
tags: added: neutron-proactive-backport-potential
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