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[Bug 2126588] [NEW] [OVN] The Logical_Router pinning breaks the external ports HA_Chassis_Groups

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Rodolfo Alonso <2126588@xxxxxxxxxxxxxxxxxx>
Date: Wed, 01 Oct 2025 17:36:28 -0000
Reply-to: Bug 2126588 <2126588@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx

Public bug reported:

The functionality added in [1] is used to pin a "HA_Chassis_Group"
created for a router when the external network is tunnelled.

This functionality, added in [2], but in particular in the patch [3],
does not work with the "HA_Chassis_Group" registers created for external
ports, in particular when the system has chassis with the CMS option
"enable-chassis-as-extport-host"; this option allows a chassis to host
external ports without being a cluster external chassis.

NOTE: the fix for this problem must be backported up to stable/2024.2,
that is when [3] was merged and released.

[1]https://bugs.launchpad.net/neutron/+bug/2052821
[2]https://review.opendev.org/q/topic:%22bug/2052821%22
[3]https://review.opendev.org/c/openstack/neutron/+/909437

** Affects: neutron
     Importance: Medium
     Assignee: Rodolfo Alonso (rodolfo-alonso-hernandez)
         Status: New

** Changed in: neutron
   Importance: Undecided => Medium

** Changed in: neutron
     Assignee: (unassigned) => Rodolfo Alonso (rodolfo-alonso-hernandez)

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https://bugs.launchpad.net/bugs/2126588

Title:
  [OVN] The Logical_Router pinning breaks the external ports
  HA_Chassis_Groups

Status in neutron:
  New

Bug description:
  The functionality added in [1] is used to pin a "HA_Chassis_Group"
  created for a router when the external network is tunnelled.

  This functionality, added in [2], but in particular in the patch [3],
  does not work with the "HA_Chassis_Group" registers created for
  external ports, in particular when the system has chassis with the CMS
  option "enable-chassis-as-extport-host"; this option allows a chassis
  to host external ports without being a cluster external chassis.

  NOTE: the fix for this problem must be backported up to stable/2024.2,
  that is when [3] was merged and released.

  [1]https://bugs.launchpad.net/neutron/+bug/2052821
  [2]https://review.opendev.org/q/topic:%22bug/2052821%22
  [3]https://review.opendev.org/c/openstack/neutron/+/909437

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