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Date:      Mon, 19 Oct 1998 11:36:18 -0600 (MDT)
From:      "Kenneth D. Merry" <ken@plutotech.com>
To:        winter@jurai.net (Matthew N. Dodd)
Cc:        scsi@FreeBSD.ORG
Subject:   Re: Strange error
Message-ID:  <199810191736.LAA23839@panzer.plutotech.com>
In-Reply-To: <Pine.BSF.4.02.9810160204100.17054-100000@sasami.jurai.net> from "Matthew N. Dodd" at "Oct 16, 98 02:14:28 am"

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Matthew N. Dodd wrote...
> On Fri, 16 Oct 1998, Kenneth D. Merry wrote:
> Oct 14 17:56:23 eisa-test /kernel: (da2:bt0:0:2:0): READ CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0 
> Oct 14 17:56:23 eisa-test /kernel: (da2:bt0:0:2:0): NOT READY asc:4,2
> Oct 14 17:56:23 eisa-test /kernel: (da2:bt0:0:2:0): Logical unit not ready, initializing cmd. required
> Oct 14 17:56:23 eisa-test /kernel: (da2:bt0:0:2:0): fatal error, failed to attach to device(da2:bt0:0:2:0): removing device entry
> 
> When I boot with media in the drive.
> 
> Most annoying this behavior.  I'm not sure why it thinks it needs to
> remove the device entry.

Did the patch I sent fix that problem?

> > > If it would help I have the entire SCSI reference for the drive and the
> > > changer available. (2meg PDF @ 600 odd pages).  My review of this document
> > > has turned up nothing but maybe someone a bit more clued in to the SCSI
> > > system would have better luck.
> > 
> > Well, send it on.  I'll take a look through it when I get a chance and see
> > if I can figure out what's going on.  (or you can just give me the URL to
> > download it from somewhere)

[ ... ]


> > Did this work under the old SCSI code?  Do you know if it works with any
> > other OSes?
> 
> I'm pretty sure they worked with VMS at one point.
> 
> I'd test 'em with Linux but 1. linux doesn't support OPTICAL devices  2.
> linux has no way to set mode pages that I can tell.  3. linux has no scsi
> changer support.  My NetBSD machines didn't seem to like them but I didn't
> try very hard and they are all running really old software.

Well, I've taken a look through the spec (yes, the whole thing), and I
didn't really see anything that would indicate what the problem is.

So, I've got a couple of ideas:

	- Hook it up to an NT box (or some other platform that HP supports)
	  and see whether it works.  I know this is distasteful, and you
	  might have to install some HP drivers to make it work, but it
	  would tell us whether there is a hardware problem or not.

	- If it works under NT, send me the changer and I'll try to get it
	  to work.  We've got SCSI analyzers here and can send bus traces
	  to HP if necessary.

Ken
-- 
Kenneth Merry
ken@plutotech.com

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