Bug#542314: grub-pc: Default install has set root=(MASS1-usr)

[John Goerzen]

Package: grub-pc
Version: 1.96+20090808-1
Severity: grave
Justification: renders package unusable

This bug renders the system unusable.

I don't know why it does this on one box but not the other, but it
has set root=(MASS1-usr) at the top of grub.cfg.  That is my /usr, not
my /boot.

Moreover, which disk is sda and which is sdb varies at each boot as of
2.6.30, and the grub packages do not appear to deal well with this.

-- Package-specific info:

*********************** BEGIN /proc/mounts
/dev/mapper/MASS1-root / xfs rw,noatime,noquota 0 0
/dev/mapper/MASS1-usr /usr xfs rw,noatime,noquota 0 0
/dev/mapper/MASS1-var /var xfs rw,noatime,noquota 0 0
/dev/sdb2 /winxp ntfs ro,relatime,uid=0,gid=0,umask=0222,nls=utf8,errors=continue,mft_zone_multiplier=1 0 0
/dev/mapper/crypt-home /home xfs rw,noatime,noquota 0 0
/dev/mapper/MASS1-home--nocrypt /home/jgoerzen/nocrypt xfs rw,noatime,noquota 0 0
/dev/sdb5 /boot ext2 rw,relatime,errors=continue 0 0
*********************** END /proc/mounts

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

*********************** 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
set timeout=5
insmod lvm
set root=(MASS1-usr)
search --no-floppy --fs-uuid --set 93dbb209-9a1a-497d-b422-262db2de59b1
if loadfont /share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  insmod gfxterm
  insmod vbe
  if terminal_output.gfxterm ; then true ; else
    # For backward compatibility with versions of terminal.mod that don't
    # understand terminal_output
    terminal gfxterm
  fi
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set root=(hd0,5)
search --no-floppy --fs-uuid --set 76bba175-64cf-4c7a-869e-ada953ebc387
insmod png
if background_image /grub/moreblue-orbit-grub.png ; then
  set color_normal=black/black
  set color_highlight=magenta/black
else
  set menu_color_normal=cyan/blue
  set menu_color_highlight=white/blue
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry "Debian GNU/Linux, Linux 2.6.30-1-686" {
	set root=(hd0,5)
	search --no-floppy --fs-uuid --set 76bba175-64cf-4c7a-869e-ada953ebc387
	linux	/vmlinuz-2.6.30-1-686 root=/dev/mapper/MASS1-root ro  
	initrd	/initrd.img-2.6.30-1-686
}
menuentry "Debian GNU/Linux, Linux 2.6.30-1-686 (recovery mode)" {
	set root=(hd0,5)
	search --no-floppy --fs-uuid --set 76bba175-64cf-4c7a-869e-ada953ebc387
	linux	/vmlinuz-2.6.30-1-686 root=/dev/mapper/MASS1-root ro single 
	initrd	/initrd.img-2.6.30-1-686
}
menuentry "Debian GNU/Linux, Linux 2.6.29-2-686" {
	set root=(hd0,5)
	search --no-floppy --fs-uuid --set 76bba175-64cf-4c7a-869e-ada953ebc387
	linux	/vmlinuz-2.6.29-2-686 root=/dev/mapper/MASS1-root ro  
	initrd	/initrd.img-2.6.29-2-686
}
menuentry "Debian GNU/Linux, Linux 2.6.29-2-686 (recovery mode)" {
	set root=(hd0,5)
	search --no-floppy --fs-uuid --set 76bba175-64cf-4c7a-869e-ada953ebc387
	linux	/vmlinuz-2.6.29-2-686 root=/dev/mapper/MASS1-root ro single 
	initrd	/initrd.img-2.6.29-2-686
}
menuentry "Debian GNU/Linux, Linux 2.6.26-1-686" {
	set root=(hd0,5)
	search --no-floppy --fs-uuid --set 76bba175-64cf-4c7a-869e-ada953ebc387
	linux	/vmlinuz-2.6.26-1-686 root=/dev/mapper/MASS1-root ro  
	initrd	/initrd.img-2.6.26-1-686
}
menuentry "Debian GNU/Linux, Linux 2.6.26-1-686 (recovery mode)" {
	set root=(hd0,5)
	search --no-floppy --fs-uuid --set 76bba175-64cf-4c7a-869e-ada953ebc387
	linux	/vmlinuz-2.6.26-1-686 root=/dev/mapper/MASS1-root ro single 
	initrd	/initrd.img-2.6.26-1-686
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Microsoft Windows XP Home Edition (on /dev/sdb2)" {
	set root=(hd0,2)
	search --no-floppy --fs-uuid --set ce6866696866506f
	drivemap -s (hd0) ${root}
	chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file is an example on how to add custom entries
### END /etc/grub.d/40_custom ###
*********************** END /boot/grub/grub.cfg

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (99, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.30-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages grub-pc depends on:
ii  debconf [debconf-2.0]    1.5.27          Debian configuration management sy
ii  grub-common              1.96+20090808-1 GRand Unified Bootloader, version 
ii  libc6                    2.9-24          GNU C Library: Shared libraries
ii  ucf                      3.0018          Update Configuration File: preserv

grub-pc recommends no packages.

Versions of packages grub-pc suggests:
ii  desktop-base                  5.0.5      common files for the Debian Deskto
ii  genisoimage                   9:1.1.9-1  Creates ISO-9660 CD-ROM filesystem

-- debconf information:
* grub-pc/linux_cmdline:
* grub-pc/chainload_from_menu.lst: true
  grub-pc/postrm_purge_boot_grub: false
* grub-pc/install_devices: /dev/sda, /dev/sdb