Comment 85 for bug 1815989

Reviewed: https://review.opendev.org/c/openstack/nova/+/825064
Committed: https://opendev.org/openstack/nova/commit/a8981422afdd09f8cfea053e592c15e771fbe969
Submitter: "Zuul (22348)"
Branch: stable/xena

commit a8981422afdd09f8cfea053e592c15e771fbe969
Author: Tobias Urdin <email address hidden>
Date: Thu Jul 16 21:29:32 2020 +0200

    libvirt: Add announce-self post live-migration workaround

    NOTE(melwitt): This is the combination of two commits, the workaround
    config option and a followup change to add a note that enabling the
    workaround will cause the guest domain to be considered tainted by
    libvirt.

    This patch adds a workaround that can be enabled
    to send an announce_self QEMU monitor command
    post live-migration to send out RARP frames
    that was lost due to port binding or flows not
    being installed.

    Please note that this makes marks the domain
    in libvirt as tainted.

    See previous information about this issue in
    the [1] bug.

    [1] https://bugs.launchpad.net/nova/+bug/1815989

    Related-Bug: 1815989

    Update announce self workaround opt description

    This updates the announce self workaround config opt
    description to include info about instance being set
    as tainted by libvirt.

    Change-Id: I8140c8fe592dd54fc09a9510723892806db49a56
    (cherry picked from commit 2aa1ed5810b67b9a8f18b2ec5e21004f93831168)

    Change-Id: I7a6a6fe5f5b23e76948b59a85ca9be075a1c2d6d
    (cherry picked from commit d44e24efe28e825fbfd2c75a032bf2d10109a439)