[Bug 1313712] Re: Trusty's libselinux1 causes issues with Precise's upstart during dist-upgrade

[Chris J Arges]

Hello Michael, or anyone else affected,

Accepted libselinux into trusty-proposed. The package will build now and
be available at
http://launchpad.net/ubuntu/+source/libselinux/2.2.2-1ubuntu0.1 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: libselinux (Ubuntu Trusty)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1313712

Title:
  Trusty's libselinux1 causes issues with Precise's upstart during dist-
  upgrade

Status in “libselinux” package in Ubuntu:
  Fix Released
Status in “libselinux” source package in Trusty:
  Fix Committed
Status in “libselinux” source package in Utopic:
  Fix Released

Bug description:
  [Impact]

   * During upgrade to trusty, upstart would be forcefully re-executed,
  even if it doesn't support stateful re-execution. This means all job
  statuses is lost.

   * Upgrade strategy for upstart is that when stateful re-execution is
  not supported, a flag should be left to re-execute upstart on shut-
  down only.

   * The culprit is in libselinux1, a new dependency of upstart in
  trusty that does not have appropriate login in its postinst.

  [Test Case]

   * Using precise's upstart as pid one execute:
  $ initctl list

   * Install libselinux1 from trusty-proposed
   * Execute
  $ initctl list

   * The two lists should be largely the same, with state of jobs preserved.
   * /var/run/init.upgraded file-flag should be present.

  [Other Info]
   
   * Original bug report:

  Hi everyone,

  During troubleshooting of bug http://pad.lv/1303891 I've also
  discovered that Precise's upstart version doesn't work with Trusty's
  libselinux1. This is a major issue during a dist-upgrade from Precise
  to Trusty as upstart is severely affected by this and looses track of
  service PIDs which prevents service reloads.

  Can someone add a Breaks for Precise's upstart version to Trusty's
  libselinux1 debian/control file?

  Reproduction instructions:
  Install Ubuntu 12.04.4.

  $ sudo apt-get update -qq && sudo apt-get dist-upgrade -qqy
  <no output; no updates>

  $ initctl list
  avahi-daemon start/running, process 765
  ...

  $ sudo sed -i 's/precise/trusty/g' /etc/apt/sources.list

  $ sudo apt-get update -qq
  <no ouput; no errors>

  $ sudo apt-get install libselinux1 -y
  ...

  New dmesg lines:
  [ 256.032898] init: Re-executing /sbin/init

  New syslog lines:
  Apr 23 14:51:40 test upstart-socket-bridge[1090]: Disconnected from Upstart
  Apr 23 14:51:40 test upstart-udev-bridge[595]: Disconnected from Upstart

  $ initctl list
  avahi-daemon stop/waiting
  ...

  Upstart lost track of service PIDs. Commands like 'initctl reload
  dbus' will fail.

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