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Date:      Sun, 28 Nov 1999 12:34:41 -0500 (EST)
From:      David Gilbert <dgilbert@velocet.ca>
To:        Joe Greco <jgreco@ns.sol.net>
Cc:        ken@kdm.org (Kenneth D. Merry), dgilbert@velocet.ca, stable@freebsd.org
Subject:   Re: ahc problems (with vinum?)
Message-ID:  <14401.26545.58505.622791@trooper.velocet.net>
In-Reply-To: <199911281633.KAA55332@aurora.sol.net>
References:  <199911280515.WAA19138_panzer.kdm.org@ns.sol.net> <199911281633.KAA55332@aurora.sol.net>

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>>>>> "Joe" == Joe Greco <jgreco@ns.sol.net> writes:

Joe> Just having spent a week debugging a (very) intermittent SCSI bus
Joe> problem, I agree that I've seen some odd behaviour of this sort.
Joe> What's even more exasperating is that, at least in some cases, it
Joe> does appear to recover the one device that erred, but the rest
Joe> stop functioning.

It would appear that I have replicated the problem again... but I have 
relagated my serial consoles to other more desparate uses.  I will go
down and check, but from memory, that is typical of the sequence I
see.

My drives (just to respond to an earlier question) are correctly
terminated with manufacturer's parts --- so the LVD chain is
terminated with LVD parts supplied by the LVD enclosure maker.  The
Ultra chain is terminated by an older drive that supports termination
... and there are only two drives on that chain.

I think my short-term solution will be to put a second 2940 in the
machine so that the root drive will still be functional when this
happens.

Dave.

-- 
============================================================================
|David Gilbert, Velocet Communications.       | Two things can only be     |
|Mail:       dgilbert@velocet.net             |  equal if and only if they |
|http://www.velocet.net/~dgilbert             |   are precisely opposite.  |
=========================================================GLO================


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