Bug#728914: grub-pc: grub rescue with raid1 root on 4TB device

2013-11-09 Thread alexandre-francois
Thanks a lot for your advices. I tried to install grub on both sda and sdb but 
without success.

However I found a workaround and a possible guilty :
- switching to UEFI and installig grub-efi does work. I still have a "efidisk 
read error" which
is non-blocking because grub stage2 menu starts immediatly after displaying 
this 
- therefore the guilty seems to be the BIOS. If you confirm this point, feel 
free to close the bug.
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Bug#728914: grub-pc: grub rescue with raid1 root on 4TB device

2013-11-08 Thread Lukas Schwaighofer
Hi,

the only thing that comes to my mind (but you most likely did this
properly): is the correct core.img installed on *both* sda and sdb (i.e.
you executed 'grub-install /dev/sda' and 'grub-install /dev/sdb')?

Regards
Lukas Schwaighofer



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Bug#728914: grub-pc: grub rescue with raid1 root on 4TB device

2013-11-07 Thread alexandre-francois
I tried to change one BIOS settings (ATA mode or AHCI) but it does not help.

However, I have no more issue when I boot my system with qemu -hda /dev/sda 
-hdb /dev/sdb.
Grub finds the raid device and the / partition inside.

So who could be guilty ?

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Bug#728914: grub-pc: grub rescue with raid1 root on 4TB device

2013-11-06 Thread francoisal
Package: grub-pc
Version: 1.99-27+deb7u2
Severity: important

Dear Maintainer,

I installed wheezy from scratch on my 2 x 4TB server, but I did not succeed 
in booting the following configuration on my two drives :

# parted /dev/sda p
  Model: ATA WDC WD4000FYYZ-0 (scsi)
  Disk /dev/sda: 4001GB
  Sector size (logical/physical): 512B/512B
  Partition Table: gpt

  Number  Start   End SizeFile system Name  Flags
   1  1049kB  2097kB  1049kBbios_grub
   2  2097kB  3967GB  3967GB  ext4  raid
   3  3967GB  4001GB  34.2GB  linux-swap(v1)

# parted /dev/sdb p
  Model: ATA WDC WD4000FYYZ-0 (scsi)
  Disk /dev/sdb: 4001GB
  Sector size (logical/physical): 512B/512B
  Partition Table: gpt

  Number  Start   End SizeFile system Name  Flags
   1  1049kB  2097kB  1049kBbios_grub
   2  2097kB  3967GB  3967GBraid
   3  3967GB  4001GB  34.2GB  linux-swap(v1)

At boot time, I land in grub rescue mode with "no such disk" error.

I do not undersand the issue because :
- the installation is OK while not using the second drive + not declaring any 
raid
- the "grub-install /dev/sda" does not report any error and we can see in its 
traces:
  # bash -x grub-install /dev/sda
...
/usr/bin/grub-mkimage -d /usr/lib/grub/i386-pc -O i386-pc 
--output=/boot/grub/core.img 
'--prefix=(mduuid/2d81babd13f240ec4e10b2c7291977fc)/boot/grub' biosdisk 
ext2 part_gpt
part_gpt raid mdraid1x
...

which looks fine for me. 


-- Package-specific info:

*** BEGIN /proc/mounts
/dev/loop0 /livemnt/squashfs squashfs ro,relatime 0 0
/dev/md0 / ext4 rw,relatime,data=ordered 0 0
*** END /proc/mounts

*** BEGIN /boot/grub/device.map
(hd0)   /dev/disk/by-id/scsi-350014ee2b2ad56db
(hd1)   /dev/disk/by-id/scsi-350014ee208026f90
*** END /boot/grub/device.map

*** BEGIN /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 mdraid1x
insmod part_gpt
insmod part_gpt
insmod ext2
set root='(mduuid/2d81babd13f240ec4e10b2c7291977fc)'
search --no-floppy --fs-uuid --set=root 520daa3d-296c-4e7a-b0e6-62c1ff36f921
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  load_video
  insmod gfxterm
  insmod raid
  insmod mdraid1x
  insmod part_gpt
  insmod part_gpt
  insmod ext2
  set root='(mduuid/2d81babd13f240ec4e10b2c7291977fc)'
  search --no-floppy --fs-uuid --set=root 520daa3d-296c-4e7a-b0e6-62c1ff36f921
  set locale_dir=($root)/boot/grub/locale
  set lang=en_US
  insmod gettext
fi
terminal_output gfxterm
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 3.2.0-4-amd64' --class debian --class 
gnu-linux --class gnu --class os {
load_video
insmod gzio
insmod raid
insmod mdraid1x
insmod part_gpt
insmod part_gpt
insmod ext2
set root='(mduuid/2d81babd13f240ec4e10b2c7291977fc)'
search --no-floppy --fs-uuid --set=root 
520daa3d-296c-4e7a-b0e6-62c1ff36f921
echo'Loading Linux 3.2.0-4-amd64 ...'
linux   /boot/vmlinuz-3.2.0-4-amd64 
root=UUID=520daa3d-296c-4e7a-b0e6-62c1ff36f921 ro  quiet
echo'Loading initial ramdisk ...'
initrd  /boot/initrd.img-3.2.0-4-amd64
}
menuentry 'Debian GNU/Linux, with Linux 3.2.0-4-amd64 (recovery mode)' --class 
debian --class gnu-linux --class gnu --class os {
load_video
insmod gzio
insmod raid
insmod mdraid1x
insmod part_gpt
insmod part_gpt
insmod ext2
set root='(mduuid/2d81babd13f240ec4e10b2c7291977fc)'
search --no-floppy --fs-uuid --set=root 
520daa3d-296c-4e7a-b0e6-62c1ff36f921
echo'Loading Linux 3.2.0-4-amd64 ...'
linux   /boot/vmlinuz-3.2.0-4-amd64 
root=UUID=520daa3d-296c-4e7a-b0e6-62c1ff36f921 ro single 
echo'Loading initial ramdisk ...'
initrd  /boot/initrd.img-3.2.0-4-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/30_os-prober ###
### E