From owner-freebsd-current  Mon Jan  6 11:36:49 2003
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From: Soeren Schmidt <sos@spider.deepcore.dk>
Message-Id: <200301061936.h06JaKma029730@spider.deepcore.dk>
Subject: Re: mirrored root fs?
In-Reply-To: <20030106201430.R35928@newtrinity.zeist.de>
To: marius@alchemy.franken.de
Date: Mon, 6 Jan 2003 20:36:20 +0100 (CET)
Cc: Nate Lawson <nate@root.org>, current@FreeBSD.ORG
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It seems marius@alchemy.franken.de wrote:
> > > if `atacontrol rebuild` would work... Is there simple way, i.e. without
> > > copying the content of the array to a temporary location, to recover from
> > > disk-failures when doing raid1 on non-raid controllers ?
> > 
> > The problem is that if its the drive that on you primary channel that
> > dies, not all BIOS's can be taught to boot from the other drive on 
> > the secondary channel. The solution is to swap the drives...
> 
> Well, and how would one rebuild the array after swaping the drive from the
> secondary channel to the primary and hooking up a replacement drive to the
> secondary channel or if one doesn't want to boot from the array at all ?

You can boot off the half-mirror and the rebuild with atacontrol once
the system is up (its done in the background so you can continue to
run but access speed will be degraded).
If you want to not use the array you just delete it with atatcontrol
and the disk will be seen as a normal ATA drive again.

-Søren

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