makedev fails to upgrade in lxc container with error 'Device or resource busy'

Right, that's caused by the fact that /dev/console is a bind mounted file in LXC containers.
I'm not sure what we can do to avoid this issue, ignoring the error completely in makedev sounds bad and would just be an ugly workaround for an LXC issue.

On LXC's side, we need these bind mounts until we get a device namespace, at least it's extremely rare makedev gets updated so it's unlikely to be an issue for our post-release users.

Serge: Any other idea on how to solve this? (I'm guessing the udev bug in bug 927531 may have the same cause)

If we have lxc bind-mound the console onto /dev/lxcconsole and change /etc/init/lxcconsole.conf accordingly, is there any other place we'd have to change this? Or would that suffice?

We could do the same renaming our bind-mounted /dev/tty1 to /dev/lxctty1.

This bug was fixed in the package lxc - 0.7.5-3ubuntu24

---------------
lxc (0.7.5-3ubuntu24) precise; urgency=low

  [ Serge Hallyn ]
  * 0040-consoles-into-devlxc.patch: move lxc's console and ttys into
    /dev/lxc/, and create symlinks into /dev. (LP: #927519)

  [ Stéphane Graber ]
  * 0041-ubuntu-template-user-and-tty:
    + Use ubuntu/ubuntu by default instead of root/root
    + Set devttydir to /dev/lxc on Precise
    + Stop modifying dhclient.conf as the default behavior is identical.
    + Stop removing tty[56].conf on Precise
    + Do not modify /etc/udev/udev.conf on Precise
    + Move information message about default login/password to the end
      of the container cration so users can't miss it.
 -- Stephane Graber <email address hidden> Fri, 10 Feb 2012 17:09:15 -0500