*BSD News Article 80479


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From: Larry Riedel <larryr@autores.hotspot.com>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: SCSI tape block size
Date: Sat, 12 Oct 1996 01:16:39 -0700
Organization: Automation Research
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J Wunsch wrote:
> I use /dev/nrst0. ;-)  What's the reason you don't trust it?

I don't know about other people, but when I write to my Archive
Python DAT drive through my Adaptec 2940 on /dev/nrst0 of my
2.2-960801-SNAP system, I am sure to get this:

   st0(ahc0:4:0): timed out in dataout phase, SCSISIGI = 0x0
   st0(ahc0:4:0): BUS DEVICE RESET message queued.
   Bus Device Reset Message Sent
   ahc0:A:4: no active SCB for reconnecting target - issuing ABORT
   SAVED_TCL == 0x40

If I try it again, I get this:

   panic: ahc0: Timed-out command times out again

and then I am history.

Everything works fine if I use /dev/rst0, and in fact if I only
read/seek through /dev/nrst0 it works fine, and everything else
I have put on the bus like hard drives and ZIP drives worked OK.

The DAT drive works without a hitch through /dev/nrst0 on my
SunOS 4.X SPARC, so I have not bothered to look into it much.


Larry