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[Launchpad Bug Tracker <1752838@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package neutron - 2:12.0.0-0ubuntu1.1

---------------
neutron (2:12.0.0-0ubuntu1.1) bionic; urgency=medium

  * d/neutron-openvswitch-agent.neutron-ovs-cleanup.service.in:
    Adding dependency on openvswitch-switch.service because
    neutron-ovs-cleanup will fail if it is run earlier than it
    (LP: #1752838).

 -- Seyeong Kim <seyeong.kim@xxxxxxxxxxxxx>  Thu, 01 Mar 2018 17:19:08
-0800

** Changed in: neutron (Ubuntu Bionic)
       Status: Triaged => 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:
  Triaged
Status in Ubuntu Cloud Archive newton series:
  Triaged
Status in Ubuntu Cloud Archive ocata series:
  Fix Committed
Status in Ubuntu Cloud Archive pike series:
  Triaged
Status in Ubuntu Cloud Archive queens series:
  Triaged
Status in neutron package in Ubuntu:
  Fix Released
Status in neutron source package in Xenial:
  Triaged
Status in neutron source package in Artful:
  Triaged
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

  Xenial - Tested, Affected
  Artful -
  Bionic -

  UCA-Mitaka - 
  UCA-Newton -
  UCA-Ocata -
  UCA-Pike -
  UCA-Queens -
  ..?

  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

  for i in {0..1000}
  do
    juju ssh nova-compute/0 "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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