When rebooting, I was forced to the login prompt, because my LVM group with my home directory couldn't be mounted.
I'm not very familiar with LVM, I had only used it to make one consolidated directory for my 100 and 160GB hard drives.
I have the same issue. I've got a volume group spread across 2 disks and when I try to activate that volgroup I get the following:
<snip> [root@hetfield mapper]# vgchange -ay VolGroup02 device-mapper ioctl cmd 9 failed: Invalid argument Couldn't load device 'VolGroup02-DVD'. 1 logical volume(s) in volume group "VolGroup02" now active <snip>
and the relevant portion of the /var/log/messages has:
<snip> Oct 17 08:45:07 hetfield kernel: device-mapper: dm-linear: Device lookup failed Oct 17 08:45:07 hetfield kernel: device-mapper: error adding target to table <snip>
My other two volgroups are working fine. It's just this third one that has problems.
I did quite a bit of googling yesterday, but I didn't come up with much although I have to confess that I know jack about the device mapper...
Regards,
Pat