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From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
Message-Id: <199507172148.OAA02136@gndrsh.aac.dev.com>
Subject: Re: scsi problems
To: paul@FreeBSD.org
Date: Mon, 17 Jul 1995 14:48:54 -0700 (PDT)
Cc: FreeBSD-current@FreeBSD.org
In-Reply-To: <199507171611.RAA00454@server.netcraft.co.uk> from "Paul Richards" at Jul 17, 95 05:11:20 pm
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> 
> Quick config question first:
> 
> How do I get rid of this, can't find any info on the correct
> syntax for the config file.
> 
> Warning: sd0 is configured at scbus0 which is not fixed at a single adapter.

Justin or Peter will have to answer that one...

> Now the real problem:
> 
> I can't use any tape devices (a HP DAT mainly), if I try to write to
> it I get (I don't think it's specific to writes though)
> 
> sd0(aha0:0:0): timed out
> adapter not taking commands.. frozen?!
> Debugger("aha1542")

In the adaptec bios setup (assuming this is a 1542C or CF) have you tried
setting the DAT drive target to async only?  Some tape drives get confused
by sync negotiation messages and hang the scsi bus.

> Now, problem is I can't get a crash dump to go looking through since the scsi
> adapter's frozen and I'm not familiar enough with the scsi code to look
> at structures in ddb, so, can someone help.
> 
> Only tapes cause this problem, there's a Barracuda and Toshiba cdrom on
> the scsi chain too and neither cause any problems.
> 
> -- 
>   Paul Richards, Bluebird Computer Systems. FreeBSD core team member. 
>   Internet: paul@FreeBSD.org, http://www.freebsd.org/~paul
>   Phone: 0370 462071 (Mobile), +44 1222 457651 (home)
> 


-- 
Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
Accurate Automation Company                 Reliable computers for FreeBSD