Date: Sun, 21 May 1995 08:03:10 -0400 (EDT) From: Peter Dufault <dufault@hda.com> To: bugs@ns1.win.net (Mark Hittinger) Cc: bugs@FreeBSD.org Subject: Re: kern/430: bug in tape drivers Message-ID: <199505211203.IAA17558@hda.com> In-Reply-To: <199505200134.VAA07349@ns1.win.net> from "Mark Hittinger" at May 19, 95 09:34:07 pm
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Mark Hittinger writes: > > > I have seen the same problem since 2.0R. I have a WangDAT3400DX. When a > process closes the tape drive I get "bt0a: try to abort". I believe this > is due to the lengthy rewind, although recently I noted that there was a > problem with scsi commands that contained no data. In any event I > still see the problem in -current. I will try a 2940 controller this > weekend and see if the problem exists there. > > After a few "bt0a try to abort" I get a "bt0a abort timed out". It is > at this point that horrible things happen. The driver corrupts the ccb > chain and bit sprays your disks. If the rewind finishes before the > "bt0a abort timed out" then no badness happens to your disks. > > As a short term kludge/workaround for myself I use the following patch > to sys/i386/isa/bt742a.c: > Does anyone have the console output of one of these disk splatters? Peter -- 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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