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Date:      Tue, 19 Apr 2005 23:30:57 +0100
From:      Mark Dixon <mark@markdnet.demon.co.uk>
To:        freebsd-stable@freebsd.org
Subject:   Re: Newbie Question About System Update
Message-ID:  <200504192331.02772.mark@markdnet.demon.co.uk>
In-Reply-To: <20050419162546.A83584@denninger.net>
References:  <426447F8.5090209@charter.net> <200504191402.04374.kstewart@owt.com> <20050419162546.A83584@denninger.net>

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On Tuesday 19 April 2005 22:25, Karl Denninger wrote:
> >
> > My attitude is that if you don't boot -s, you are simply playing
> > Russian-roulette with your system. Some day, it will bite you.
> >
> > Kent
>
> Not if your update procedure saves the old kernel.
>
> Yes, you will have to get there to recover.  You have to get there (either
> physically or serial console) anyway if it blows up on you.

The only problem I can see with this is if one of the more exotic disk=20
controller drivers or file systems drivers goes homicidal (diskicidal?).=20
Booting multi, you will automount all your big disks and arrays giving the=
=20
drivers the chance to wreak havoc before you can do much about it. This see=
ms=20
pretty unlikely on -STABLE though. You're still in trouble though because=20
you've probably lost / which probably contains the backup of the old kernel.

In conclusion, its probably best if disk controller drivers and filesystem=
=20
drivers don't have bugs in them.

Mark

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