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From: Julian Elischer <julian@ref.tfs.com>
Message-Id: <199511021257.EAA25056@ref.tfs.com>
Subject: Re: [Fwd: Help, my sanity is gradually slipping awaaaayyy. was Re: Problem With Fujitsu SCSI Drive (Messages and Test Results)]
To: dufault@hda.com (Peter Dufault)
Date: Thu, 2 Nov 1995 04:57:45 -0800 (PST)
Cc: msmith@atrad.adelaide.edu.au, phil@zipmail.co.uk, hackers@freebsd.org,
        hardware@freebsd.org
In-Reply-To: <199511021131.GAA25770@hda.com> from "Peter Dufault" at Nov 2, 95 06:31:03 am
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I already suggested the same, but have heard nothing..

> 
> > 
> > Jordan K. Hubbard stands accused of saying:
> > 
> > Check your cables and termination!  
> > It's possible you have one of the over-enthusiastic 1542's; also bring all
> > of the jumper-selectable timings back to the slowest possible settings.
> 
> The over-enthusiastic 1542's were early 1542Cs.  I think they
> slowed down the REQ/ACK edges.  They claim they are within spec
> and with proper impedance cables you won't have problems even
> with one of these aggressive boards.  Cable issues, though, will
> typically lead to parity problems, hung SCSI busses, complaints
> of unexpected bus phases etc. and not
> reproducible hardware failures on one of the targets.
> 
> > > >sd0(aha0:0:0): HARDWARE FAILURE asc: 44,a2, FAILURE
> > > >sd0(aha0:0:0): HARDWARE FAILURE asc: 44,a2, Retries = x
> > > >sd0(aha0:0:0): HARDWARE FAILURE info: 2d18 asc 15,1 Mechanical
> > > >positioning error sks(80,f) 
> > > >sd0(aha0:0:0): HARDWARE FAILURE info: 1d70 asc 15,1 Mechanical
> > > >positioning error sks(80,f)
> > > >vm_page : pager input (probably hardware) error, PID 11 failure
> > 
> > If you get this consistently, I would still be suspicious of the drive.
> > If it _is_ a translation error, there's a bug in the drive firmware if
> > it's accepting a request to process a block outside the size of the drive 8)
> 
> Can you boot FreeBSD without the SCSI drive and then exercise the
> SCSI system through the raw device?  That should make things a lot
> clearer if it still fails.  Try various block sizes up to 64k.
> 
> (...)
> 
> --
> 
> Peter Dufault               Real Time Machine Control and Simulation
> HD Associates, Inc.         Voice: 508 433 6936
> dufault@hda.com             Fax:   508 433 5267
>