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Date:      Wed, 5 Feb 1997 21:09:04 +0200 (IST)
From:      Nadav Eiron <nadav@cs.technion.ac.il>
To:        garman@phs.k12.ar.us
Cc:        Wolfgang Helbig <helbig@BA-Stuttgart.De>, hackers@freebsd.org
Subject:   Re: CMD640b flaw workaround
Message-ID:  <Pine.GSO.3.95-heb-2.07.970205210708.28189B-100000@csd>
In-Reply-To: <Mutt.19970204152524.garman@jason.garman.net>

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On Tue, 4 Feb 1997, Jason Garman wrote:

> Nadav Eiron writes:
> > I tried installing the patches on my troubled 2.1.5R system, and it
> > doesn't cure my problem. I think I should describe my problem once again,
> > as it's not the classical CMD640 bug. I have a machine with a hard disk
> > (Quantum FireBall) and a CD (Creative x4), both on the primary channel.
> > The problem is that CD access is unreliable. It's most commonly seen when
> > I try to serve a CD directly via apache. Under heavy load, some of the
> > Apace processes will hang while accessing the CD like so:
> > 
> That's weird.  You're right, the patch won't fix this.  I have a CD and hd
> on my first channel, and it works fine here...
> 
> I know this isn't a really good `solution,' but how about switching the cd
> onto the second channel?

Strange enough, it seems to be working! I now have a disk on one channel
and the CD on the other and they seem to be getting along. I'll leave it
like that for a couple of days and then either I'll try adding a disk or
upgrade to 2.1.6 - whichever I feel is more important :-). I guess I can't
expect the CD to get along with another disk on the secondary channel, so
if I get another disk I'll probably try two disks on the primary channel
and the CD alone on the secondary.

Thanks again,

> 
> Enjoy,
> -- 
> Jason Garman                             http://www.nesc.k12.ar.us/~garman/
> Student, Eleanor Roosevelt High School                 garman@phs.k12.ar.us
> 
Nadav




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