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Date:      Sun, 12 Mar 1995 21:02:27 -0500 (EST)
From:      Peter Dufault <dufault@hda.com>
To:        wert@humbaba.ipfw.indiana.edu (Randall S. Wert)
Cc:        freebsd-bugs@FreeBSD.org
Subject:   Re: 950210-SNAP Problems ...
Message-ID:  <199503130202.VAA01805@hda.com>
In-Reply-To: <Pine.BSF.3.91.950312192919.29927A-100000@humbaba.ipfw.indiana.edu> from "Randall S. Wert" at Mar 12, 95 07:40:57 pm

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Randall S. Wert writes:
> 
> Folks,
> 	I have just upgraded one of my two FreeBSD systems from 1.5.1.. to the
> 950210-SNAP release, I tried the 2.0-RELEASE version with the same 
> problems I'm reporting only they occured on the 2.0-RELEASE set with more 
> frequency.  Here's a list of the current hardware and a outline of the 
> problem.
> 
> 	Motherboard:		ASUS PCI/I P54SP4, w/100Mhz Pentium
> 	Cards:			Old SMC 80XX, NCR onboard SCSI, mono video
> 	Memory:			64MB
> 	Disk:			1 ST3390N(345MB), 2 ST12550N (2.1GB)
>  
> The system boots ok but a about 3-5 minute intervals I get the following 
> message from the kernel:
> 
> 	/kernel: sd0(ncr0:0:0): ABORTED COMMAND asc:47 fru:02, retries:4

ASC 47 is "SCSI parity error".  The non-zero Field Replaceable Unit
field is a little odd and I can't guess what the disk is trying to
tell us - it is supposed to define a device-specific field replaceable
unit that may have failed.

As long as retries doesn't count down to zero the disk is recovering.
Do you ever get more than one failure (retries less than 4)?

Are you using the same cabling with the NCR SCSI as you did with
the 1542 SCSI?  Did you have parity enabled on the 1542? It usually
is by default.

As a guess you are running the bus faster with the NCR SCSI and
that is leading to the problems and revisiting the cables will fix
things.

> 
> And then at about 12-24 hour intervals the kernel panics with the 
> following message, only have on copy but it's happened about 6 times...

I suspect this is unrelated.

-- 
Peter Dufault               Real Time Machine Control and Simulation
HD Associates, Inc.         Voice: 508 433 6936
dufault@hda.com             Fax:   508 433 5267



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