Ramuk at 00:22, 11 November 2007

Ramuk — Sun, 11 Nov 2007 00:22:31 GMT

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	== Abstract==		== Abstract==

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Ramuk — Sat, 10 Nov 2007 16:59:36 GMT

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Jutta: /* Abstract */

Jutta — Mon, 03 Sep 2007 14:19:59 GMT

Abstract

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== Abstract==

This article shows how to boot terastation from a different location than /dev/md0.

== Prerequisites ==

# You need a modified firmware: [[Fail Safe Firmware]]
# You need an additional boot device: [[Emergency Boot]]
# You need a partition to boot from, e.g. extra disk (internal or external) or from /dev/hd'x'4, example with /dev/md3:
## boot from sda1
## copy system and set start configuration

mdadm -C -n 4 -l raid1 /dev/md3 /dev/hda4 /dev/hdc4 /dev/hde4 /dev/hdg4
mkfs.xfs -f /dev/md3
mkdir /mnt/md3
mount /dev/md3 /mnt/md3
cp -a /mnt/teraroot/* /mnt/md3
vi /mnt/md3/etc/fstab

# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/md3 / auto defaults,noatime 0 0
/dev/md0 /mnt/teraroot auto defaults,ro 0 0
proc /proc proc defaults 0 0
/dev/hda2 swap swap defaults 0 0
/dev/hdc2 swap swap defaults 0 0
/dev/hde2 swap swap defaults 0 0
/dev/hdg2 swap swap defaults 0 0

mkdir /mnt/md3/teraroot

== Setting boot partition option==

If you have a bootable partion simply set the device you want to boot from in /etc/BOOTPART of the md0 partition, i.e. /mnt/teraroot/etc/BOOTPART after booting from sda1:

mount -o remount,rw /dev/md0
echo md3 > /mnt/teraroot/etc/BOOTPART
reboot

== After boot:==

root@TERASTATION:~# mount
/dev/md3 on / type auto (rw,noatime)
proc on /proc type proc (rw)
/dev/shm on /mnt/ram type tmpfs (rw,mode=1777,size=15m)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/md0 on /mnt/teraroot type xfs (ro)
/dev/md1 on /mnt/array1 type xfs (rw,noatime)
/dev/md2 on /mnt/array2 type xfs (rw,noatime)
/proc/bus/usb on /proc/bus/usb type usbdevfs (rw)

== Diagnosis==

If you set up your system booting from a different location e.g. md4 and this partition is not mountable,

* the system boots with md0
* the yellow power led blinks

If the booting of md0 fails

* the system boots EM
* the yellow power led is on

... and of course all other leds behaviour as you know it.

Courtesy of André [http://terastation.wiki.homelinux.net/wikish/index.html]

Boot Option - Revision history

Ramuk at 00:22, 11 November 2007

Ramuk: 1 revision(s)

Jutta: /* Abstract */