Same problem here. It seems that, agter update, grub-probe doesn't detect the
correct UUID for the root partition md,
My system:
ma...@judas:~$ cat /proc/mdstat
Personalities : [raid1]
md0 : active (auto-read-only) raid1 sdc2[0] sdd2[1]
144512 blocks [2/2] [UU]
md2 : active raid1 sdb3[0] sda3[2]
486191028 blocks super 1.1 [2/2] [UU]
md1 : active raid1 sda1[0] sdb1[1]
240832 blocks [2/2] [UU]
* md0 is my shared data RAID
* md1 contains /boot
* md2 has the root partition
---------------------------------------------------
ma...@judas:~$ sudo tune2fs -l /dev/md0 | grep UUID
Filesystem UUID: b49925e4-ffa2-4c89-9696-f0e5b093195f
ma...@judas:~$ sudo tune2fs -l /dev/md1 | grep UUID
Filesystem UUID: bf675e32-c65a-4e54-9686-ef0500234471
ma...@judas:~$ sudo tune2fs -l /dev/md2 | grep UUID
Filesystem UUID: c5425cb9-8834-4b64-a694-fdc75da3c189
ma...@judas:~$ sudo grub-probe --device /dev/md0 --target=fs_uuid
b49925e4-ffa2-4c89-9696-f0e5b093195f
ma...@judas:~$ sudo grub-probe --device /dev/md1 --target=fs_uuid
bf675e32-c65a-4e54-9686-ef0500234471
ma...@judas:~$ sudo grub-probe --device /dev/md2 --target=fs_uuid
b49925e4-ffa2-4c89-9696-f0e5b093195f
There's a mismatch in the last grub-probe over my root partition. The correct
UUID is c5425cb9-8834-4b64-a694-fdc75da3c189, reported by tune2fs. grub-probe
returs the same UUID as md0
---------------------------------------------------
ma...@judas:~$ mount
/dev/md2 on / type ext3 (rw,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
/dev/md1 on /boot type ext3 (rw)
/dev/sdf2 on /mnt/ST3250823A_5ND24XY1 type reiserfs (rw)
/dev/mapper/vg_almacen-descargas on /mnt/vg_almacen-descargas type xfs (rw)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
* /dev/mapper/vg_almacen-descargas is md0. It has an LVM logical drive
---------------------------------------------------
ma...@judas:~$ cat /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
if loadfont /grub/unicode.pf2 ; then
set gfxmode=640x480
load_video
insmod gfxterm
fi
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
set locale_dir=($root)/grub/locale
set lang=
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 2.6.32-5-amd64' --class debian --class
gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
echo 'Loading Linux 2.6.32-5-amd64 ...'
linux /vmlinuz-2.6.32-5-amd64 root=UUID=b49925e4-ffa2-4c89-9696-
f0e5b093195f ro quiet
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-5-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-amd64 (recovery mode)' --
class debian --class gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
echo 'Loading Linux 2.6.32-5-amd64 ...'
linux /vmlinuz-2.6.32-5-amd64 root=UUID=b49925e4-ffa2-4c89-9696-
f0e5b093195f ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-5-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-3-amd64' --class debian --class
gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
echo 'Loading Linux 2.6.32-3-amd64 ...'
linux /vmlinuz-2.6.32-3-amd64 root=UUID=b49925e4-ffa2-4c89-9696-
f0e5b093195f ro quiet
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-3-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-3-amd64 (recovery mode)' --
class debian --class gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
echo 'Loading Linux 2.6.32-3-amd64 ...'
linux /vmlinuz-2.6.32-3-amd64 root=UUID=b49925e4-ffa2-4c89-9696-
f0e5b093195f ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-3-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-2-amd64' --class debian --class
gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
echo 'Loading Linux 2.6.32-2-amd64 ...'
linux /vmlinuz-2.6.32-2-amd64 root=UUID=b49925e4-ffa2-4c89-9696-
f0e5b093195f ro quiet
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-2-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-2-amd64 (recovery mode)' --
class debian --class gnu-linux --class gnu --class os {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
echo 'Loading Linux 2.6.32-2-amd64 ...'
linux /vmlinuz-2.6.32-2-amd64 root=UUID=b49925e4-ffa2-4c89-9696-
f0e5b093195f ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-2-amd64
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
linux16 /memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
linux16 /memtest86+.bin console=ttyS0,115200n8
}
menuentry "Memory test (memtest86+, experimental multiboot)" {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
multiboot /memtest86+_multiboot.bin
}
menuentry "Memory test (memtest86+, serial console 115200, experimental
multiboot)" {
insmod raid
insmod mdraid
insmod part_msdos
insmod part_msdos
insmod ext2
set root='(md1)'
search --no-floppy --fs-uuid --set bf675e32-c65a-4e54-9686-ef0500234471
multiboot /memtest86+_multiboot.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
### 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 ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
look at
linux /vmlinuz-2.6.32-5-amd64 root=UUID=b49925e4-ffa2-4c89-9696-
f0e5b093195f ro quiet
It tries to mount md0 as the root partition. It should be md2
---------------------------------------------------
Is there any way to woraround this problem? I am modifying grub.cfg by hand to
make my system bootable again.
Thanks.
--
Mario J. Barchéin Molina - Terragiro T.I.
<ma...@terragiro.es>
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