Bug#439063: Acknowledgement (upgrading lvm2 hangs)

[Nagy Gábor Péter]

I have rebooted the machine (proper shutdown).

At boot I got the root prompt, as it couldn't mount the devices. vgdisplay 
and lvdisplay showed me all my volumes, but under /dev the vg directory 
was missing, and /dev/mapper was also empty, but the control file.

Booted from rescue CD, mounted all LVs, chrooted, dpkg --configure -a, and 
that has fixed the problem.

So I have a working machine again.

But I have no idea what went wrong, and this is somewhat disturbing.

Regards,
Gabor