mountall upgrade fails to install within lucid lxc container

[Robert Collins]

Unpacking replacement mountall ...
dpkg: error processing /var/cache/apt/archives/mountall_2.15.3_i386.deb (--unpack):
 unable to make backup link of `./lib/init/fstab' before installing new version: Invalid cross-device link

[Serge Hallyn (serge-hallyn)]

Thanks for reporting this bug.

The reason for this is that lxcguest bind-mounts a custom fstab over /lib/init/fstab when a container is booted. For the precise cycle, we intend to fix mountall so that we'll no longer need that hack. Once that's done, mountall upgrades will be able to proceed.

In the meantime, a workaround might be to umount /lib/init/fstab during a late stage of container boot, since it is only needed when mountall first starts. However, it's probable better to spend our time getting rid of lxcguest to really fix this bug.

[Serge Hallyn (serge-hallyn)]

As soon as a few changes hit upstart, we will get rid of lxcguest, which will close this bug.

[Serge Hallyn (serge-hallyn)]

lxcguest has been removed.

[Chad Miller (cmiller)]

The remaining part of the fix appears to be to remove "lxcguest" manually from your existing lxc guest.

[Stéphane Graber (stgraber)]

The new upstart conflicts with lxcguest, so lxcguest is automatically removed from the Precise containers.