Bug#604845: grub-pc: update-grub fails with "error: Couldn't find PV pv1. Check your device.map."

[Colin Watson]

On Wed, Nov 24, 2010 at 07:56:04PM +0100, B. Vogel wrote:
> Update-grub uses grub-probe to get more information on "/usr/share/grub/unicode.pf2". 
> This fails and as a result /boot/grub/grub.cfg is not created.

Is your /usr on plain LVM, or is encryption involved too?

> grub-probe fails for target=abstraction and target=partmap:
> # grub-probe --device /dev/mapper/main-usr --target=abstraction
> grub-probe: warn: Discarding improperly nested partition (hd3,msdos3,msdos1).
> grub-probe: warn: Discarding improperly nested partition (hd3,msdos3,msdos1).
> grub-probe: error: Couldn't find PV pv1. Check your device.map.

It would help to add the -vv option so that we get debugging
information.

Thanks,

-- 
Colin Watson                                       [cjwatson at debian.org]