[Bug 1031065] [NEW] /sbin/resolvconf -a depends on /run/resolvconf/interface but it may not exist

[Launchpad Bug Tracker]

You have been subscribed to a public bug:

In development of 'overlayroot' package, I was mounting / as rw in the initramfs.
This was causing a different order of execution of mounts, and as a result a different order of networking resolvconf and networking bringup.

It exposed a bug in resolvconf, which was being called on boot in this order:
==== Mon Jul 30 19:08:58 UTC 2012 /sbin/resolvconf -a lo.inet ====
==== Mon Jul 30 19:08:59 UTC 2012 /sbin/dhclient-script  ====
==== Mon Jul 30 19:08:59 UTC 2012 /sbin/resolvconf -a eth0.dhclient ====
==== Mon Jul 30 19:08:59 UTC 2012 /sbin/resolvconf -a eth0.inet ====
==== Mon Jul 30 19:08:59 UTC 2012 /sbin/resolvconf --enable-updates ====
==== Mon Jul 30 19:08:59 UTC 2012 /etc/resolvconf/update.d/libc -u ====

The normal order is for resolvconf --enable-updates to be called (from /etc/init/resolvconf.conf) before anything else. As a result, I was seeing errors like:
  resolvconf: Error: /run/resolvconf/interface either does not exist or is not a directory

This may be exposing a more grave issue, in that I believe the reason
for dhclient coming up before resolvconf.conf started was that it was
being run as a result of /etc/init/network-interface.conf. I don't
immediately see how that is guarnateed to have /run ounted at all.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: resolvconf 1.67ubuntu1
ProcVersionSignature: User Name 3.5.0-6.6-generic 3.5.0
Uname: Linux 3.5.0-6-generic x86_64
Architecture: amd64
Date: Mon Jul 30 20:07:04 2012
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: resolvconf
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: cloud-init (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug quantal
-- 
/sbin/resolvconf -a depends on /run/resolvconf/interface but it may not exist
https://bugs.launchpad.net/bugs/1031065
You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to cloud-init in Ubuntu.