Date: Thu, 2 Nov 1995 06:31:03 -0500 (EST) From: Peter Dufault <dufault@hda.com> To: msmith@atrad.adelaide.edu.au (Michael Smith) Cc: phil@zipmail.co.uk, hackers@freebsd.org, hardware@freebsd.org Subject: Re: [Fwd: Help, my sanity is gradually slipping awaaaayyy. was Re: Problem With Fujitsu SCSI Drive (Messages and Test Results)] Message-ID: <199511021131.GAA25770@hda.com> In-Reply-To: <199511020302.NAA08209@genesis.atrad.adelaide.edu.au> from "Michael Smith" at Nov 2, 95 01:32:05 pm
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> > 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
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