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Date: Mon, 2 Jun 1997 16:44:00 -0400 (EDT)
From: Ben Black <black@zen.cypher.net>
To: Robert Shady <rls@mail.id.net>
cc: Paul Saab <paul@mu.org>, rls@mail.id.net, freebsd-hackers@FreeBSD.ORG
Subject: Re: Archive Tape Autochanger
In-Reply-To: <199706021930.PAA12287@server.id.net>
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sounds like you may be incorrectly setting your block size.

On Mon, 2 Jun 1997, Robert Shady wrote:

> > Robert Shady wrote:
> > > Has anyone gotten the CSC special Archive DAT auto-changer to work
> > > with FreeBSD yet?  What did you have to do to get it to work?  I
> > > am starting to wonder if mine is just defective.  I'm running 2.2.2
> > > release, and when I load a tape, it spits it back out a few seconds
> > > later, the drive displays "CHK MAG", and the FreeBSD box reports
> > > ERROR: Vendor specific ASCQ.  Under different versions of FreeBSD
> > > I have at least been able to load tapes, and run small backups, but
> > > now it won't even load the tape.
> > 
> > I got it to work.  I could not get it to change tapes using chio
> > when I had it plugged into my Adaptec 154x but when I put it on my
> > Adaptec 2940 it worked like a charm.
> 
> Have you gotten it to backup 8GB uncompressed yet?  I've got 120 meter
> tapes in there, and the best I can get is 1GB.  What does your 
> "mt status" report for density?  What is a good density to use?  By
> default, mine reads "0x24", but I've tried 0x00 as well to no avail,
> I've going to try 0x13 now, but I think that'll limit me to the
> standard 4GB/uncompressed per tape, but we'll see...
> 
> 	-- Rob
> ===
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