At 11:09 AM 1/26/00 -0700, you wrote:
>I been experimenting with software RAID1 under 6.1 on a test server, and
>here's some interesting things I've come across:
>
>The test server in question is IDE only, with the drives configured as
follows:
>
>primary boot disk - ide0, /dev/hda
>secondary boot disk - ide1, /dev/hdc
>
>I'm not sure how my experiments would turn out on a SCSI box, so take what
>you read with a grain of salt and remember - YMMV. ;-)
>
<snip>
>If the primary drive fails, booting from the secondary is a little more
>problematic. Since LILO doesn't get installed on the MBR of the secondary
>drive a boot floppy is necessary, which further complicates matters. The
>boot floppy wants to make root /dev/md0, but it is unable to read the /boot
>directory and fails. Oops, slight problem! Unfortunately, trying to
>pre-install LILO to the MBR of the secondary drive seems to be a chicken &
>the egg problem. In order to install LILO, I need to be able to boot from
>that drive and in order to boot from that drive I need LILO installed. If
>their is a way to tell LILO to install to the MBR of a different drive,
>could someone enlighten me?
>
Try something like this:
Make a second lilo.conf file. (lilo1.conf)
Change boot=/dev/hda to boot=/dev/hdc
lilo -c /etc/lilo1.conf
It may or may not work - I am not sure lilo will have the right pionters
to the kernel and initial ram disk on the second drive. It may only
boot up as far as LI...
Also, did you try making a LILO boot disk? Coppy the kernel, and the
initial ram disk to the floppy, put a lilo.conf on it that is set up
to have the kernel and initial ram disk on the floppy, and then
run something like:
lilo -c /lilo.conf -r /mnt/fd0
Change /mnt/fd0 if you have the floppy mounted someware else.
This should let you boot, with the raid drivers, and still
have the root file system as the raid drive. If you want, you
can also set up to more lables that use the same setup, but
have root=/dev/hda1 and root=/dev/hdc1. I haven't played with
raid yet, so I am not sure if the later two will actualy work.
Let me know if any of this helps...
Mikkel
---
Do not meddle in the affairs of dragons,
for you are crunchy and taste good with ketchup.
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