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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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[-- Attachment #1 --]
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 
controller drivers or file systems drivers goes homicidal (diskicidal?). 
Booting multi, you will automount all your big disks and arrays giving the 
drivers the chance to wreak havoc before you can do much about it. This seems 
pretty unlikely on -STABLE though. You're still in trouble though because 
you've probably lost / which probably contains the backup of the old kernel.

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

Mark

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