Re: RAID 5 questions

[Frank van Maarseveen <frankvm@xs4all.nl>]

On Mon, Aug 02, 2004 at 10:27:02AM +0300, Jarmo Järvenpää wrote:
> Jim Paris wrote:
> 
> >README.raid from lilo-22.5.9 (the latest version) states:
> >
> >"Only RAID1 is supported.  LILO may be used to boot a system

yep. and even that may go wrong.

> Hmm, I'm not sure how to convince you :-)

try running lilo with -v -v -v

Then you might see the BIOS drive number, geometry it assumes etc. You
will probably see only _one_ disk and in that case your system boots
by sheer luck.

With -v -v -v I discovered why my system refused to boot from raid 1.
It appears to actually boot from the first disk in the raid set, e.g:

	md1 : active raid1 hdg1[1] hda1[0]
				   ^^^^^^^

This is mounted on /boot and lilo will boot from hda1 (bios disk 0x80).
I had to reassemble the raid set in opposite order to get this because
hdg is unbootable (lilo assumed bios drive 0x81). But maybe my lilo is
old (21.4-4).

-- 
Frank
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