From: Tim Fletcher <tim@parrswood.manchester.sch.uk>
To: Andreas Dilger <adilger@turbolinux.com>
Cc: Werner Almesberger <Werner.Almesberger@epfl.ch>,
Venkatesh Ramamurthy <Venkateshr@ami.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: Linux not adhering to BIOS Drive boot order?
Date: Thu, 18 Jan 2001 00:59:22 +0000 (GMT) [thread overview]
Message-ID: <Pine.LNX.4.30.0101180048260.29484-100000@pine.parrswood.manchester.sch.uk> (raw)
In-Reply-To: <200101180039.f0I0du929822@webber.adilger.net>
> > I have a mirrored boot drive in a pair of firewalls / routers and to test
> > before I put them into service I pulled hda and the machine booted fine
> > from hdc and baring winging about the missing disk (all the drives are
> > mirrored) carried on as normal. A fresh disk was put and rebuilt no
> > problems and was then booted off with the other disk missing.
>
> Ahh. What I was missing was that by specifying /dev/md0 as the root device,
> not only do you get an identical map for the kernels, but the root device
> remains /dev/md0 no matter which drive fails and LILO/kernel don't need to
> do anything special to find it. This assumes the BIOS can boot from /dev/hdc
> to start with (i.e. /dev/hda is totally gone).
Hence I have the disks in caddies to make taking them out all together
easier, to force the bios to find the /dev/hdc as the boot drive
> How does MD/RAID0 know which array should be /dev/md0? What if you had a
> second array on /dev/hdb and /dev/hdd, would that become /dev/md0 (assuming
> it had a kernel/boot sector)?
/etc/raidtab specifies which drives belong in which array, but I only have
hda and hdc so I can't really answer the question
--
Tim Fletcher - Network manager .~.
/V\ L I N U X
nightshade@solanum.net // \\ >Don't fear the penguin<
tim@parrswood.manchester.sch.uk /( )\
irc: Night-Shade on quakenet ^^-^^
Never apply a StarTrek solution to a Babylon 5 problem
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next prev parent reply other threads:[~2001-01-18 0:59 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-16 17:39 Linux not adhering to BIOS Drive boot order? Venkatesh Ramamurthy
2001-01-16 17:58 ` David Woodhouse
2001-01-16 21:11 ` Andreas Dilger
2001-01-17 9:38 ` David Woodhouse
2001-01-17 9:55 ` Jeff Garzik
2001-01-17 10:19 ` Andreas Dilger
2001-01-17 10:02 ` David Woodhouse
2001-01-19 1:17 ` H. Peter Anvin
2001-01-17 10:12 ` Andreas Dilger
2001-01-17 23:19 ` Russell King
2001-01-17 19:50 ` Werner Almesberger
2001-01-17 20:43 ` Andreas Dilger
2001-01-18 0:14 ` Tim Fletcher
2001-01-18 0:39 ` Andreas Dilger
2001-01-18 0:59 ` Tim Fletcher [this message]
2001-01-18 9:41 ` Helge Hafting
-- strict thread matches above, loose matches on Subject: below --
2001-01-18 16:55 David Balazic
2001-01-18 19:49 ` Tim Fletcher
2001-01-18 16:36 Andries.Brouwer
2001-01-18 11:01 David Balazic
2001-01-18 11:35 ` Tim Fletcher
2001-01-18 13:01 ` Xavier Bestel
2001-01-18 14:03 ` Tim Fletcher
2001-01-17 11:04 David Balazic
2001-01-17 10:56 David Balazic
2001-01-17 10:48 David Balazic
2001-01-17 23:23 ` Andreas Dilger
2001-01-18 10:14 ` David Balazic
2001-01-17 10:21 David Balazic
2001-01-17 10:28 ` Boszormenyi Zoltan
2001-01-16 22:54 Venkatesh Ramamurthy
2001-01-16 20:35 Venkatesh Ramamurthy
2001-01-16 20:14 Venkatesh Ramamurthy
2001-01-16 20:30 ` Dr. Kelsey Hudson
2001-01-16 21:18 ` Andreas Dilger
2001-01-17 15:33 ` Mike Porter
2001-01-17 16:16 ` James Bottomley
2001-01-17 17:07 ` Craig Ruff
2001-01-18 12:50 ` Peter Samuelson
2001-01-18 17:59 ` idalton
2001-01-18 18:14 ` Peter Samuelson
2001-01-18 20:53 ` Matti Aarnio
2001-01-18 22:55 ` David Weinehall
2001-01-16 17:30 Bryan Henderson
2001-01-16 17:04 David Balazic
[not found] <Venkateshr@ami.com>
2001-01-16 16:56 ` Venkatesh Ramamurthy
2001-01-16 19:52 ` John Summerfield
2001-01-16 16:51 Venkatesh Ramamurthy
2001-01-16 17:09 ` Honza Pazdziora
2001-01-16 16:46 Venkatesh Ramamurthy
2001-01-16 16:43 Venkatesh Ramamurthy
2001-01-16 20:01 ` Dr. Kelsey Hudson
2001-01-16 20:37 ` Michael Meissner
2001-01-16 21:01 ` Andi Kleen
2001-01-16 21:23 ` Michael Meissner
2001-01-16 23:32 ` J . A . Magallon
2001-01-17 0:05 ` Dr. Kelsey Hudson
2001-01-17 0:42 ` Michael Meissner
2001-01-17 2:14 ` Peter Samuelson
2001-01-17 17:22 ` Michael Meissner
2001-01-17 18:41 ` Douglas Gilbert
2001-01-17 9:45 ` Ishikawa
2001-01-17 15:45 ` J . A . Magallon
2001-01-16 23:51 ` Dr. Kelsey Hudson
2001-01-17 19:22 ` Werner Almesberger
2001-01-17 20:32 ` Matti Aarnio
2001-01-17 20:46 ` Werner Almesberger
2001-01-17 21:26 ` Dr. Kelsey Hudson
2001-01-16 16:35 Venkatesh Ramamurthy
2001-01-16 17:04 ` Brian Gerst
2001-01-16 17:24 ` Eddie Williams
2001-01-16 18:22 ` Timur Tabi
2001-01-16 19:18 ` Matthew D. Pitts
2001-01-16 19:54 ` Christopher Friesen
2001-01-16 21:04 ` Timur Tabi
2001-01-16 22:51 ` Peter Samuelson
2001-01-16 16:31 Venkatesh Ramamurthy
2001-01-16 16:53 ` Eddie Williams
2001-01-16 19:48 ` John Summerfield
2001-01-16 16:19 Venkatesh Ramamurthy
2001-01-16 16:23 ` Florent Cueto
2001-01-16 16:31 ` Brian Gerst
2001-01-16 16:40 ` Dominik Kubla
2001-01-16 15:49 Venkatesh Ramamurthy
2001-01-16 16:06 ` David Woodhouse
2001-01-16 16:27 ` Arjan van de Ven
2001-01-16 16:40 ` Matthias Andree
2001-01-16 16:45 ` Douglas Gilbert
2001-01-16 17:38 ` Malahal Rao Naineni
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