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[Bug 1157332] Re: /etc/dnsmasq.d-available/lxc circular link

 

quantal has seen the end of its life and is no longer receiving any
updates. Marking the quantal task for this ticket as "Won't Fix".

** Changed in: network-manager (Ubuntu Quantal)
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/1157332

Title:
  /etc/dnsmasq.d-available/lxc circular link

Status in libvirt package in Ubuntu:
  Fix Released
Status in lxc package in Ubuntu:
  Fix Released
Status in network-manager package in Ubuntu:
  Triaged
Status in libvirt source package in Quantal:
  Fix Released
Status in lxc source package in Quantal:
  Fix Released
Status in network-manager source package in Quantal:
  Won't Fix
Status in libvirt source package in Raring:
  Fix Released
Status in lxc source package in Raring:
  Fix Released
Status in network-manager source package in Raring:
  Triaged

Bug description:
  = Rational =
  We pushed a custom dnsmasq hook to precise, quantal and raring over the past few months to avoid conflicts for people running the dnsmasq system daemon (non-default).
  However because we introduced this change as SRU, it's causing problems when then upgrading to the next release by having the migration code get executed multiple times.
  We need to fix this and repare broken systems in the process.

  = Test case =
   - Install any of the current  lxc, libvirt-bin or network-manager on Ubuntu 12.04 or 12.10
   - Dist-upgrade to the next version of Ubuntu
   - You'll notice /etc/dnsmasq.d-available/FILE is now a circular link, /etc/dnsmasq.d/FILE no longer exists and the old content is moved to /etc/dnsmasq.d-available/FILE.dpkg-new (where FILE is lxc, dnsmasq or network-manager)
   - Updating to a fixed package will move everything back into place (assuming the user hasn't done any local change in between, in which case, nothing will be done)

  = Regression potential =
  I have tested the change doing precise -> quantal -> raring and quantal -> raring and I'm confident the new postinst hook will fix any breakage. It's also specific enough to only trigger in the specific case we know how to repair. In all other cases, we keep the system as-is and let the user deal with it. As a result, it's not impossible that some weird corner cases (for example when removing/purging the package in between dist-upgrades) may go unfixed but I'm confident we'll cover at least 99% of the cases with the fix and that this fix is safe.

  
  --- Original bug report ---
  In today's Raring apt-get dist-upgrade:

  Setting up lxc (0.9.0~rc1-0ubuntu1) ...
  Installing new version of config file /etc/apparmor.d/lxc/lxc-default-with-nesting ...
  dpkg: warning: lxc: config file '/etc/dnsmasq.d-available/lxc' is a circular link
   (= '/etc/dnsmasq.d-available/lxc')

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