[Bug 1885264] Re: neutron-ovs-cleanup runs on package upgrade

[Launchpad Bug Tracker]

This bug was fixed in the package neutron - 2:16.0.0-0ubuntu0.20.04.2

---------------
neutron (2:16.0.0-0ubuntu0.20.04.2) focal; urgency=medium

  * Ensure OVS and linuxbridge cleanup systemd units are not restarted
    on upgrade or started on install (LP: #1885264):
    - d/rules: Pass --no-stop-on-upgrade to dh_install{systemd,init} for
      ovs and linuxbridge cleanup systemd units.
    - d/rules: Pass --no-start to dh_install{systemd,init} for
      ovs and linuxbridge cleanup systemd units.
    - d/rules: Also pass --no-restart-after-upgrade to deal with bug
      in older debhelper versions in Ubuntu Cloud Archive.
    - d/rules: Pass appropriate -X flags to each call to
      dh_install{systemd,init} to ensure that duplicate snippets are
      not generated in maintainer scripts.

 -- James Page <james.page at ubuntu.com>  Thu, 02 Jul 2020 08:27:02 +0100

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

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https://bugs.launchpad.net/bugs/1885264

Title:
  neutron-ovs-cleanup runs on package upgrade

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive ussuri series:
  Fix Committed
Status in Ubuntu Cloud Archive victoria series:
  Fix Released
Status in neutron package in Ubuntu:
  Fix Released
Status in neutron source package in Focal:
  Fix Released
Status in neutron source package in Groovy:
  Fix Released

Bug description:
  == Impact ==

  Upgrades to OpenStack Ussuri will result in service disruption to the
  network datapath for instances and other virtual networking concepts.

  == Test Case ==

  Standalone
  apt install neutron-openvswitch-agent
  (add proposed pocket)
  apt install neutron-openvswitch-agent
  neutron-ovs-cleanup unit will be restarted

  (UCA)
  add-apt-repository cloud-archive:train
  apt install neutron-openvswitch-agent
  add-apt-repository cloud-archive:ussuri
  apt dist-upgrade

  (neutron-ovs-cleanup will be restarted)

  Full cloud (UCA or distro)
  Deploy OpenStack Train (using Juju charms)
  Create networking, boot instances and confirm connectivity to instances
  Upgrade to OpenStack Ussuri (using Juju charms)
  Networking to instances will be lost

  == Regression Potential ==

  Medium - the fix is purely in package and ensures that the
  neutron-*-cleanup scripts are not started on install or restarted
  during an upgrade.

  == Original Bug Report ==
  Release: Focal/Bionic+Ussuri:

  As part of the package upgrade for neutron-openvswitch-agent, the
  neutron-ovs-cleanup systemd unit is restarted.

  This unit should only be run on reboot, and not during package
  upgrades.

  It has the side effect of removing all ports from the local OVS
  bridge, impacting networking to services.

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