L3 HA router doesn't work over VXLAN/L2 pop after rebooting the controller with primary router

Bug #1639025 reported by Eugene Nikanorov
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Mirantis OpenStack
Status tracked in 10.0.x
Fix Committed
MOS Neutron
Won't Fix
Alexey Stupnikov
Changed in mos:
milestone: none → 9.2
importance: Undecided → High
description: updated
Changed in mos:
assignee: nobody → MOS Neutron (mos-neutron)
status: New → Confirmed
tags: added: area-neutron
Revision history for this message
Ann Taraday (akamyshnikova) wrote :

This change is proposed for stable/mitaka https://review.openstack.org/#/c/382210/, so when it will be merged in upstream and we can get it with sync.

tags: added: wait-for-stable
Revision history for this message
Alexey Stupnikov (astupnikov) wrote :

Removed 8.0-mu4 nomination, since we don't have a fix to backport and it is not clear what is the root cause of this issue (I have checked upstream's review comments).

Revision history for this message
Fuel Devops McRobotson (fuel-devops-robot) wrote : Fix merged to openstack/neutron (9.0/mitaka)

Reviewed: https://review.fuel-infra.org/28774
Submitter: Pkgs Jenkins <email address hidden>
Branch: 9.0/mitaka

Commit: 61dc356a30d803b4c1ec3bbcbbf83f202427bc79
Author: Ann Kamyshnikova <email address hidden>
Date: Wed Nov 23 09:40:42 2016

Merge the tip of origin/stable/mitaka into origin/9.0/mitaka

2ee6e58 Fix "failed unplugging ha interface" error when deleting router
fd082cd Avoid trace in _notify_l3_agent_ha_port_update
8834107 LinuxBridge: Pass host into get_devices_details_list
0010301 Ensure there are fdb_entries before iterating
9dd4ad1 Update metadata proxy when subnet add/delete
c06ff65 l2pop fdb flows for HA router ports

Closes-Bug: #1639025

Change-Id: If47e63124d783bc1a2a2c0109547ae35b7358f5a

Revision history for this message
Alexander Ignatov (aignatov) wrote :
Changed in mos:
status: Confirmed → Fix Committed
tags: added: on-verification
description: updated
Revision history for this message
Ekaterina Shutova (eshutova) wrote :

Verified on:
cat /etc/fuel_build_id:
cat /etc/fuel_build_number:
cat /etc/fuel_release:
cat /etc/fuel_openstack_version:
rpm -qa | egrep 'fuel|astute|network-checker|nailgun|packetary|shotgun':

tags: removed: on-verification
Changed in mos:
status: Fix Committed → Fix Released
Revision history for this message
Alexey Stupnikov (astupnikov) wrote :

Original upstream bug #1522980 is about general issue: it states that HA with l2pop is provided only if control plane is operational. Original bug's reporter says that we shouldn't rely on database, messaging server and neutron-server reliability when providing HA.

Upstream developers used 3 patches to solve reported issue:

1. https://review.openstack.org/#/c/255237/ is used to implement additional method to create flood flaws (not it can be done not only with l2pop) and to change the way neutron-server, DB and messenger are used to organize HA.
2. Patches https://review.openstack.org/#/c/323993/ and https://review.openstack.org/#/c/339982/ are used to rename existing functions and DB tables, but don't change any neutron's behaviour. No need to backport.

I have analyzed changes made in the first patch and it looks like they change neutron internal processes significantly. On the other hand, the overall request looks like a feature to me (we improve existing neutron's features). Since we have no reliable tests to cover all the variety of possible issues this patch can introduce, I think that this bug should be closed as Won't Fix for 8.0-updates.

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