Bug#568614: fails to detect ext4 filesystem

[Philipp Huebner]

Package: grub-pc
Version: 1.98~20100128-1
Severity: normal

Hi,

I'm having exactly the same problem, but I have /boot on the second partition of my SATA-harddisk, no Raid in use.

# grub-probe --verbose -d /dev/sda2
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: /dev/sda2 starts from 112647780.
grub-probe: info: opening the device hd0.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: info: DOS partition 0 starts from 2048.
grub-probe: info: DOS partition 1 starts from 112647780.
grub-probe: info: opening hd0,2.
grub-probe: info: the size of hd0 is 488397168.
grub-probe: error: unknown filesystem.

-- Package-specific info:

*********************** BEGIN /proc/mounts
/dev/mapper/atlantis-root / ext4 rw,noatime,errors=remount-ro,barrier=1,data=ordered 0 0
/dev/sda2 /boot ext4 rw,sync,nosuid,nodev,noatime,barrier=1,data=ordered 0 0
/dev/mapper/_dev_mapper_atlantis_home /home ext4 rw,relatime,barrier=1,data=ordered 0 0
*********************** END /proc/mounts

*********************** BEGIN /boot/grub/device.map
(hd0)	/dev/sda
*********************** 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
insmod lvm
insmod ext2
set root=(atlantis-root)
search --no-floppy --fs-uuid --set 2dd657a2-f4fd-42bb-abb3-640a52239e07
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=1152x864
  set gfxpayload=keep
  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
set locale_dir=/boot/grub/locale
set lang=de
insmod gettext
set timeout=5
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry "Debian GNU/Linux, with Linux 2.6.32-trunk-amd64" {
	set gfxpayload=keep
	set root=(hd0,2)
	echo	Loading Linux 2.6.32-trunk-amd64 ...
	linux	/vmlinuz-2.6.32-trunk-amd64 root=/dev/mapper/atlantis-root ro  quiet idle=mwait
	echo	Loading initial ramdisk ...
	initrd	/initrd.img-2.6.32-trunk-amd64
}
menuentry "Debian GNU/Linux, with Linux 2.6.32-trunk-amd64 (recovery mode)" {
	set gfxpayload=keep
	set root=(hd0,2)
	echo	Loading Linux 2.6.32-trunk-amd64 ...
	linux	/vmlinuz-2.6.32-trunk-amd64 root=/dev/mapper/atlantis-root ro single 
	echo	Loading initial ramdisk ...
	initrd	/initrd.img-2.6.32-trunk-amd64
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows Vista (loader) (on /dev/sda1)" {
	insmod ntfs
	set root=(hd0,1)
	search --no-floppy --fs-uuid --set 265a6c895a6c5797
	chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
*********************** END /boot/grub/grub.cfg

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-trunk-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages grub-pc depends on:
ii  debconf [debconf-2.0]    1.5.28          Debian configuration management sy
ii  grub-common              1.98~20100128-1 GRand Unified Bootloader, version 
ii  libc6                    2.10.2-5        Embedded GNU C Library: Shared lib
ii  ucf                      3.0025          Update Configuration File: preserv

grub-pc recommends no packages.

Versions of packages grub-pc suggests:
pn  desktop-base                  <none>     (no description available)

-- debconf information:
  grub2/kfreebsd_cmdline:
* grub2/linux_cmdline:
  grub-pc/chainload_from_menu.lst: true
  grub-pc/kopt_extracted: false
* grub-pc/install_devices: (hd0)
  grub-pc/postrm_purge_boot_grub: false
  grub2/kfreebsd_cmdline_default: quiet
* grub2/linux_cmdline_default: quiet