Bug#575498: initramfs-tools: LVM doesn't start when using Labels in grub as rootlocation

[maximilian attems]

severity 575498 wishlist
tags 575498 wontfix
stop

On Fri, Mar 26, 2010 at 01:09:15PM +0100, Ingo Rauschenberg wrote:
> 
> I'm using in my grub configuration Labels to point out, where my Rootfs
> is located.
> This looks like # kopt=root=LABEL=ROOT ro
> When the vlm2 initramfs-tools script runs this is translated so that
> $ROOT is something like /dev/disk/by-label/ROOT
> The script don't activates the vg's so that my root-fs is missing.

I don't see an easy way of detecting that said label is a lvm volume.

anyway there is not much point in using LABEL for lvm volumes they
are unique anyway.
 
> I have in the switch statement in the activate_vg function the following
> lines appended and now it works (for me):
> 	
> 	/dev/disk/by-label*)
> 		lvm vgchange -aly --ignorelockingfailure
> 		exit 0
> 		;;

aboves would enable any lvm vg,
this caused data loss for lvm2 also due mkfs and friends
not overwriting lvm data. so aboves is not a generic possibility.