[linux-lvm] lvm lost after reboot !? how to recover UUID?

[kitchhiking.org]

Hi Alan,

first of all thx for the quick response.

I already checked for the physical presence and function of the  
disks, also checked SMART parameters with
smartctl -> everything is fine.

I changed nothing to the installed system. No new kernel, nothing.

devfs was enabled already before.

pvdisplay/vgdisplay didn't find anything (see my previous post).

vgchange -a y can't find a VG, too.

I have absolutely no clue what happened. I already thought maybe  
there were still some filesystem writes cached
and non flushed, when I rebooted but that would be really strange...

Any more ideas?

Regards,
Constantin

Am 18.07.2005 um 17:36 schrieb Alan Jurgensen:

> First figure out if your disks are there:   dmesg|grep [sh]d
> Check for partitions:   fdisk -l
> then see whether LVM stuff is there:  pvscan ; vgscan
> Look at your distro's boot-up process.... maybe you installed a new  
> kernel and forgot to include the initrd that activates the VGs  
> (via:   vgchange -a y)
> Or maybe you enabled devfs or something, and the discs now show up  
> with a different device path.