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[Launchpad Bug Tracker <1752838@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package neutron - 2:11.0.3-0ubuntu2

---------------
neutron (2:11.0.3-0ubuntu2) artful; urgency=medium

  * d/neutron-openvswitch-agent.service.in,
    d/neutron-openvswitch-agent.neutron-ovs-cleanup.service.in:
    Ensure neutron-ovs-cleanup runs after openvswitch-switch and
    neutron-openvswitch-agent runs after neutron-ovs-cleanup (LP: #1752838).

 -- Seyeong Kim <seyeong.kim@xxxxxxxxxxxxx>  Wed, 28 Mar 2018 04:44:38
-0700

** Changed in: neutron (Ubuntu Artful)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1752838

Title:
  [SRU] neutron-ovs-cleanup runs earlier than ovsdb-server when there
  are many port

Status in Ubuntu Cloud Archive:
  Fix Committed
Status in Ubuntu Cloud Archive newton series:
  Fix Committed
Status in Ubuntu Cloud Archive ocata series:
  Fix Committed
Status in Ubuntu Cloud Archive pike series:
  Triaged
Status in Ubuntu Cloud Archive queens series:
  Fix Committed
Status in neutron package in Ubuntu:
  Fix Released
Status in neutron source package in Xenial:
  Fix Released
Status in neutron source package in Artful:
  Fix Released
Status in neutron source package in Bionic:
  Fix Released

Bug description:
  [Impact]

  In code, Basically all ubuntu version could be affected.
  I'm trying to do test them

  neutron-ovs-cleanup service runs earlier than ovsdb-server sometimes.

  then, neutron-ovs-cleanup service's status remains failed
  with below error msg

  "ProcessExecutionError: Exit code: 1; Stdin: ; Stdout: ; Stderr: ovs-
  vsctl: unix:/var/run/openvswitch/db.sock: database connection failed
  (No such file or directory)"

  that is fine for booting.

  but.

  If someday upgrade pkgs related to neutron, it runs neutron-ovs-
  cleanup again because it is not in active status.

  eventually, neutron-ovs-cleanup deletes all ports on running compute
  nodes.

  related logs here https://paste.ubuntu.com/p/QkkwP2vPDv/

  [Test Case]

  1. deploy openstack env
  2. run below scripts to add many ports
  #!/bin/bash

  juju ssh nova-compute/0 '
  sudo modprobe dummy
  for i in {1..1000}
  do
    echo $i
    sudo ip link add dummy$i type dummy;sudo ip link set name t-test$i dev dummy$i;sudo ovs-vsctl add-port br-int t-test$i
  done
  '
  3. systemctl list-units --failed
  - check if there is failed neutron-ovs-cleanup service

  [Regression]
  Changes dependency on debian/neutron-openvswitch-agent.neutron-ovs-cleanup.service.in
  need to reboot if this patch is affected. If this symptom is not affected your env. no need to reboot.

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