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[OpenStack Infra <2116960@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/955086
Committed: https://opendev.org/openstack/neutron/commit/f1de2e4ea1dedde3a4be115d46439693cc2c2571
Submitter: "Zuul (22348)"
Branch:    master

commit f1de2e4ea1dedde3a4be115d46439693cc2c2571
Author: Doug Goldstein <cardoe@xxxxxxxxxx>
Date:   Tue Jul 15 11:11:14 2025 -0500

    [OVN]: fix ovn-db-sync to include gateway chassis
    
    When we sync the SegmentHostMappings with the OVN southbound on start
    up, the chassis that are a gateway are being skipped from updating.
    The rest of the code base includes those in writing to the
    SegmentHostMappings so we should keep those in sync on ovn-db-sync as
    well.
    
    Closes-Bug: #2116960
    Change-Id: Ie1b375f5c23864d7fa17c9dd05f0453b439835f1
    Signed-off-by: Doug Goldstein <cardoe@xxxxxxxxxx>


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/2116960

Title:
  neutron ovn db sync skips chassis enabled as gateway

Status in neutron:
  Fix Released

Bug description:
  The code at
  https://opendev.org/openstack/neutron/src/commit/a8b8a646482fa807776c4ab2b4ccb06067e384c1/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_db_sync.py#L1451
  only syncs the segment host mappings for OVN_CONTROLLER_AGENT but this
  means that OVN_CONTROLLER_GW_AGENT is skipped. It seems like both
  OVN_CONTROLLER_GW_AGENT and OVN_CONTROLLER_AGENT should be included in
  the sync here of segment host mappings to properly populate the DB.

  The reason I say this is the code
  https://opendev.org/openstack/neutron/src/commit/a8b8a646482fa807776c4ab2b4ccb06067e384c1/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py#L1354-L1394
  which is part of the OVN mechanism does not explicitly filter out the
  OVN_CONTROLLER_GW_AGENT from updating the segment host mapping.

  And in fact includes OVN_CONTROLLER_GW_AGENT in
  https://opendev.org/openstack/neutron/src/commit/a8b8a646482fa807776c4ab2b4ccb06067e384c1/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py#L1389
  so it appears the DB sync operation is incorrect.

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