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Date:      Mon, 13 Nov 1995 08:16:29 -0500 (EST)
From:      Peter Dufault <dufault@hda.com>
To:        j@uriah.heep.sax.de
Cc:        freebsd-bugs@freefall.freebsd.org
Subject:   Re: kern/820: scsi tape problems
Message-ID:  <199511131316.IAA03087@hda.com>
In-Reply-To: <199511130800.AAA20069@freefall.freebsd.org> from "J Wunsch" at Nov 13, 95 00:00:02 am

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>  > Nov 12 20:02:54 linus /kernel: st0(aha0:4:0): MEDIUM ERROR info:11 field replaceable unit: 1
>  
>  This is clearly a problem with your tape (and/or drive).
>  
>  > Nov 12 20:18:21 linus /kernel: st0(aha0:4:0): timed out 
>  
>  This looks like a subsequent problem in the driver (since your tape
>  drive did lengthy attempts to recover from the above error).  I've
>  once been discussing the problems of adapter timeouts with Peter
>  Dufault.  I think we came to the conclusion to make something else
>  than now, but i forgot what it was. :-)

We decided that if something claims it is "in the process of becoming
ready" we'd keep trying forever with an increasing timeout that stops
at 20 seconds or so, together with an ioctl on a control
device to force it to finally fail.  I don't think it applies in this case.

--
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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