Bug#518361: [lvm2] lvm2 device nodes created in /dev/mapper do not belong to group disk anymore

[C. Dominik Bodi]

Package: lvm2
Version: 2.02.44-2
Severity: normal

--- Please enter the report below this line. ---
devices nodes created by lvm2 in /dev/mapper do not belong to the group "disk" 
anymore. This makes it impossible for non-root users belonging to the disk 
group to manipulate any of the logical volumes.

My particular use case is virtualbox-ose. I use lvm2 logical volumes to store 
raw disk images for virtualbox. virtualbox doesn't run as root, so I added 
the user running virtualbox-ose to the disk group. This used to work fine 
until recently. I can't tell which version of lvm2 caused this to go wrong, 
though, as I hadn't used virtualbox on this machine for a few weeks.

I set the umask to 022 in /etc/lvm/lvm.conf, ran update-initramfs and rebooted 
the system, to no avail. I checked the updated initramfs, it did contain the 
updated lvm.conf with umask set to 022.

Regards,
Dominik
--- System information. ---
Architecture: amd64
Kernel:       Linux 2.6.28.7-hirsch-1

Debian Release: squeeze/sid

--- Package information. ---
Depends                     (Version) | Installed
=====================================-+-===============
libc6                        (>= 2.3) | 2.9-4
libdevmapper1.02.1     (>= 2:1.02.30) | 2:1.02.30-2
libreadline5                 (>= 5.2) | 5.2-4
lsb-base                              | 3.2-20