Bug#544731: "error: no such disk" renders system unbootable

[Albin Tonnerre]

On Wed, Sep 02, 2009 at 07:21:31PM +0200, Felix Zielcke wrote :
> Am Mittwoch, den 02.09.2009, 18:59 +0200 schrieb Albin Tonnerre:
> > Package: grub-pc
> > Version: 1.97~beta1-1
> > Severity: grave
> > Justification: renders package unusable
> > 
> > Hello,
> > After installing grub-pc, the system (using /boot and / on LVM) fails to boot
> > with the following error:
> > 
> > Entering rescue mode...
> > error: no such disk
> > 
> > This is not particularly related to grub 1.97, as I've been experiencing this
> > for some time now. Lilo is able to boot the system correctly. If there's
> > anything I can do to help you fix this, please let me know.
> > 
> > Regards,
> > Albin
> > 
> > 
> > -- Package-specific info:
> > 
> > *********************** BEGIN /proc/mounts
> > /dev/mapper/lvm-system / ext3 rw,relatime,errors=remount-ro,data=ordered 0 0
> > /dev/mapper/home /home ext3 rw,noatime,errors=remount-ro,data=ordered 0 0
> > *********************** END /proc/mounts
> > 
> > *********************** BEGIN /boot/grub/device.map
> > (hd0)	/dev/sda
> > (lvm-system) /dev/mapper/lvm-system
> > *********************** END /boot/grub/device.map
> 
> You don't need to have LVs in device.map. device.map doestn't get used
> for LVM.

That's what grub autogenerated upon install. Thanks for the info, though. I
wasn't aware of that.

> > *********************** BEGIN /boot/grub/grub.cfg
> > #
> > # DO NOT EDIT THIS FILE
> > #
> > # It is automatically generated by /usr/sbin/grub-mkconfig using templates
> > # from /etc/grub.d and settings from /etc/default/grub
> > #
> > 
> > ### BEGIN /etc/grub.d/00_header ###
> > set default=0
> > insmod ext2
> > set root=(lvm-system)
> 
> Uhm this is weird. There should be a `insmod lvm' too.
> Then the lvm module isn't probable included in core.img
> What do the following commands output?
> grub-probe -t device /
> grub-probe -t abstraction /dev/mapper/lvm-system

[19:33 ~]% sudo grub-probe -t device /
/dev/mapper/lvm-system
[19:33 ~]% sudo grub-probe -t abstraction /dev/mapper/lvm-system
grub-probe: error: cannot find a device for /dev/mapper/lvm-system.

Regards,
-- 
Albin Tonnerre