grub boot problem with md
Hi all,
I've got a Dell PowerEdge 830 that I've set up md raid1 on. grub was
installed as part of the installation process and I recently installed
grub on sdb with the following commands:
grub> device (hd0) /dev/sdb
grub> root (hd0,1)
grub> setup (hd0)
The root partition is 1 on both these drives (see fdisk output below).
Here is the default boot from menu.lst:
title Debian GNU/Linux, kernel 2.6.18-4-686
root (hd0,1)
kernel /vmlinuz-2.6.18-4-686 root=/dev/md3 ro
initrd /initrd.img-2.6.18-4-686
Here are the relevant bits from mdstat:
# cat /proc/mdstat
Personalities : [raid1]
md3 : active raid1 sda3[0] sdc3[2](S) sdb3[1]
979840 blocks [2/2] [UU]
md2 : active raid1 sda2[0] sdc2[2](S) sdb2[1]
289088 blocks [2/2] [UU]
Here are the relevant mounted paritions:
# mount
/dev/md3 on / type ext3 (rw,errors=remount-ro)
/dev/md2 on /boot type ext3 (rw)
And output from fdisk:
# fdisk -l /dev/sda
Device Boot Start End Blocks Id System
/dev/sda1 1 7 56196 de Dell Utility
/dev/sda2 * 8 43 289170 fd Linux raid
/dev/sda3 44 165 979965 fd Linux raid
# fdisk -l /dev/sdb
Device Boot Start End Blocks Id System
/dev/sdb1 1 7 56196 de Dell Utility
/dev/sdb2 * 8 43 289170 fd Linux raid
/dev/sdb3 44 165 979965 fd Linux raid
I power down the server and remove the first HDD, then power up the
server and set the BIOS to boot off the second HDD. As the server
starts, I *think* I see the message "GRUB ..." for about five
microseconds before the screen goes black and the only thing that is on
the screen is the following message:
"Console redirection code"
And the server does not boot off the second HDD. I've looked through
all of menu.lst and console redirection is not configured to be active.
I have also copied the MBR from sda to sdb and the same problem
happens. Have I done something wrong with grub or is this something
weird and Dell specific?
Thanks,
Greg
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