Re: Check support for logical volume management

[Klaus Knopper <debian-knoppix@knopper.net>]

Hi,

On Fri, Nov 20, 2009 at 12:38:13PM +0100, Markus Elfring wrote:
> Hello,
> 
> I get the following display in a LXTerminal window after the 6.2 DVD was booted.
> 
> knoppix@Microknoppix:~$ su -
> root@Microknoppix:~# vgchange --available y
>   /proc/misc: No entry for device-mapper found
>   Is device-mapper driver missing from kernel?
>   Failure to communicate with kernel device-mapper driver.
>   0 logical volume(s) in volume group "system" now active
> 
> This command worked in the software environment from the 5.3.1 DVD. Would you like to get the LVM tools working again on the current platform?

I think that the device mapper module may simply not be loaded.
Have you tried loading dm-mod?
(sudo modprobe dm-mod)

Regards
-Klaus Knopper