This bug was fixed in the package libvirt - 0.9.13-0ubuntu12.3
---------------
libvirt (0.9.13-0ubuntu12.3) quantal-proposed; urgency=low
* put libvirt-bin dnsmasq file into /etc/dnsmasq.d-available, and
create a symlink in /etc/dnsmasq.d, to avoid problems when removing
and re-installing libvirt-bin. (LP: #1113821)
* Add code to postinst to fix any double-migration of /etc/dnsmasq.
(LP: #1157332)
* debian/libvirt-bin.{dirs,install}: install dnsmasq.d-available/libvirt-bin
-- Serge Hallyn <serge.hal...@ubuntu.com> Tue, 16 Apr 2013 07:11:17 -0500
** Changed in: libvirt (Ubuntu Quantal)
Status: Fix Committed => Fix Released
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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 Committed
Status in “network-manager” source package in Quantal:
Triaged
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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