[SOLVED] Can't initialize LVM partitions

Question

I have Ubuntu 8.10 installed on LVM. I'm tring to install Arch using the same partition setup I already have for Ubuntu.
For some reason after I load dm-mod module the LVM partitions do not appear in /dev/mapper the /dev/{$VG_NAME} directory also does not exist.
If I do lvscan I see all of my logical volumes. I tried to do partprobe but it didn't help.
I can't recreate the VG because I'll lose all my data in /home and unfortunatly I don't have a place to back it up.
I'm using the archlinux-2008.06-ftp-x86_64.iso the md5sum matches so there is no problem with the installer.
Does any one know how to fix it?
Thanks in advance.
Last edited by kian.tern (2008-11-30 13:27:23)

Answer 1

also, there is an option to automatically start logical volumes at boot-time in /etc/rc.conf:
USELVM="yes"
Did you also put your root partition on LVM? Then you'd better add the "lvm2" hook to $HOOKS in /etc/mkinitcpio.conf, make sure your boot-partition (if you have one) is mounted read-write, and run as root:
mkinitcpio -p kernel26
If your root is not on LVM, the mkinitcpio step is unnecessary