Bug#491977: grub-probe fails with "Cannot find a GRUB drive for /dev/dm-N."

Tue Jul 22 22:42:10 UTC 2008

Package: grub
Version: 0.97-41
Severity: important

I'm unable to install any linux (kernel) security updates or any other
kernels at all. Whenever I try to installa new kernel image (and thus
run update-grub) I get this:

> Running postinst hook script /usr/sbin/update-grub.
> Searching for GRUB installation directory ... found: /boot/grub
> grub-probe: error: Cannot find a GRUB drive for /dev/dm-5.  Check your
> device.map.

> User postinst hook script [/usr/sbin/update-grub] exited with value 1

Apparently grub fails to map my md devices to the real drives.

-- Package-specific info:

*********************** BEGIN /boot/grub/device.map
(fd0)	/dev/fd0
(hd0)	/dev/hda
(hd1)	/dev/sda
(hd2)	/dev/sdb
*********************** END /boot/grub/device.map

*********************** BEGIN /proc/mounts
/dev/md2 / ext3 rw,errors=remount-ro,data=ordered 0 0
/dev/md2 /dev/.static/dev ext3 rw,errors=remount-ro,data=ordered 0 0
/dev/md0 /boot ext3 rw,data=ordered 0 0
/dev/hda2 /mnt/hda2 ext3 rw,nosuid,nodev,noexec,data=ordered 0 0
/dev/sdc1 /mnt/sdc1 ext3 rw,nosuid,nodev,noexec,data=ordered 0 0
*********************** END /proc/mounts

*********************** BEGIN /boot/grub/menu.lst
# menu.lst - See: grub(8), info grub, update-grub(8)
#            grub-install(8), grub-floppy(8),
#            grub-md5-crypt, /usr/share/doc/grub
#            and /usr/share/doc/grub-doc/.

## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.           
default		0

## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout		5

# Pretty colours
color cyan/blue white/blue

### PASSWORD LINE REMOVED ###
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line)  and entries protected by the
# command 'lock'
### PASSWORD LINE REMOVED ###
### PASSWORD LINE REMOVED ###
### PASSWORD LINE REMOVED ###

#
# examples
#
# title		Windows 95/98/NT/2000
# root		(hd0,0)
# makeactive
# chainloader	+1
#
# title		Linux
# root		(hd0,1)
# kernel	/vmlinuz root=/dev/hda2 ro
#

#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below

## DO NOT UNCOMMENT THEM, Just edit them to your needs

## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
##      kopt_2_6_8=root=/dev/hdc1 ro
##      kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=/dev/md2 ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd1,0)

## should update-grub create alternative automagic boot options
## e.g. alternative=true
##      alternative=false
# alternative=true

## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
##      lockalternative=false
# lockalternative=false

## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=

## should update-grub lock old automagic boot options
## e.g. lockold=false
##      lockold=true
# lockold=false

## Xen hypervisor options to use with the default Xen boot option
# xenhopt=

## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0

## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
##      altoptions=(single-user) single
# altoptions=(recovery mode) single

## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
##      howmany=7
# howmany=all

## should update-grub create memtest86 boot option
## e.g. memtest86=true
##      memtest86=false
# memtest86=true

## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false

## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false

## ## End Default Options ##

title		Debian GNU/Linux, kernel 2.6.24-1-686
root		(hd1,0)
kernel		/vmlinuz-2.6.24-1-686 root=/dev/md2 ro 
initrd		/initrd.img-2.6.24-1-686

title		Debian GNU/Linux, kernel 2.6.24-1-686 (recovery mode)
root		(hd1,0)
kernel		/vmlinuz-2.6.24-1-686 root=/dev/md2 ro single
initrd		/initrd.img-2.6.24-1-686

### END DEBIAN AUTOMAGIC KERNELS LIST

# This is a divider, added to separate the menu items below from the Debian
# ones.
#title		Other operating systems:
#root

# This entry automatically added by the Debian installer for an existing
# linux installation on /dev/hda3.
#title		Debian GNU/Linux, kernel 2.6.11 Default (on /dev/hda3)
#root		(hd0,2)
#kernel		/boot/vmlinuz root=/dev/hda3 ro ramdisk_size=100000 init=/etc/init lang=de apm=power-off nomce quiet screen=1280x1024 dma vga=791 
#initrd		/boot/initrd.img
#savedefault
#boot

# This entry automatically added by the Debian installer for an existing
# linux installation on /dev/hda3.
#title		Debian GNU/Linux, kernel 2.6.11 (on /dev/hda3)
#root		(hd0,2)
#kernel		/boot/vmlinuz-2.6.11 root=/dev/hda3 ro ramdisk_size=100000 init=/etc/init lang=de apm=power-off nomce quiet screen=1280x1024 dma vga=791 
#initrd		/boot/initrd.img-2.6.11
#savedefault
#boot

*********************** END /boot/grub/menu.lst

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (990, 'testing'), (300, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 2.6.24-1-686 (SMP w/1 CPU core)
Locale: LANG=de_DE.utf-8, LC_CTYPE=de_DE.utf-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages grub depends on:
ii  grub-common              1.96+20080704-2 GRand Unified Bootloader, version 
ii  libc6                    2.7-10          GNU C Library: Shared libraries
ii  libncurses5              5.6+20080308-1  Shared libraries for terminal hand

grub recommends no packages.

-- no debconf information