[Bug 985755] Re: /lib/init/upstart-job does not handle lucid->precise upgrade scenario

[Martin Pitt]

Hello James, or anyone else affected,

Accepted upstart into precise-proposed. The package will build now and
be available in a few hours. Please test and give feedback here. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed. Thank you in advance!

** Also affects: upstart (Ubuntu Precise)
   Importance: High
     Assignee: James Hunt (jamesodhunt)
       Status: Fix Committed

** Also affects: upstart (Ubuntu Quantal)
   Importance: Undecided
       Status: New

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/985755

Title:
  /lib/init/upstart-job does not handle lucid->precise upgrade scenario

Status in “upstart” package in Ubuntu:
  Fix Committed
Status in “upstart” source package in Precise:
  Fix Committed
Status in “upstart” source package in Quantal:
  New

Bug description:
  [Impact]
  If an upgrade from lucid to precise pulls in a new upstart job that should be started on package install, the job will silently fail to be started.  If other packages expect the job to be running, this may cause cascading installation failures.

  [Development Fix]
  Package will be copied to quantal when the archive opens.

  [Test Case]
  1. Install Ubuntu 10.04 desktop
  2. upgrade to 12.04 without rebooting.
  3. run /etc/init.d/cron stop; /etc/init.d/cron start
  4. verify that an error message is output and cron is not restarted.
  5. install the upstart package from precise-proposed.
  6. again run /etc/init.d/cron start
  7. verify that no error is output and cron is restarted successfully.

  [Regression Potential]
  None foreseen.

  
  /lib/init/upstart-job was recently changed (bug 974147) such that it now calls 'initctl show-config -e $JOB'. This works fine for precise systems and for oneiric->precise upgrades, but does not work for lucid->precise upgrades since 'show-config' is not a legitimate initctl command on the version of init running on lucid at the time of the precise upgrade (0.6.5-8) since the 'show-config' command was added in Upstart 1.3.

  /lib/init/upstart-job needs to be changed to handle the lucid upgrade
  path scenario by either checking the running version of init or more
  intelligently parsing the output of 'initctl show-config -e $JOB'
  since currently, an upgrade from lucid to precise will cause all
  upgraded packages containing upstart jobs to *not* restart the
  services.

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