[6591] in linux-scsi channel archive
Re: OT: mtx 1.1 Sol 2.6, general users cannot get changer replies.
daemon@ATHENA.MIT.EDU (Marc SCHAEFER)
Thu Jun 3 06:11:36 1999
To: linux-scsi@vger.rutgers.edu
From: Marc SCHAEFER <schaefer@alphanet.ch>
Date: 3 Jun 1999 12:09:34 +0200
Mr. James W. Laferriere <babydr@baby-dragons.com> wrote:
> a general user can get 'mt' to get status (...) once the
> tape is loaded . But using 'mtx' on the same device
> illicits the below response .
Question 1:
- are you operating a medium changer ? A medium changer is a device
which can automatically load, remove and choose from different
cassettes.
if no: well, why are you using mtx, then ?
Question 2:
- if you answered YES to the first question, are you 100% sure that
your tape device has LUN (Logical Unit) 0 as the tape drive, and
1 as the changer ? (if you don't know, look in the debug messages,
or do a scsi-probe/probe-scsi/sprobe/whatever from PROM monitor
after clean shutdown).
If you do not have such changer, you need other software. I have software
for Solaris, including full source, which can be used to control a
SCSI ID-based autochanger (such as the DILOG Libra series, from
the company I work for, thank you for reading this subliminal
advertising :)).
Look at http://www-internal.alphanet.ch/archives/local/autochangers/plt/
this works under Linux (through sg) and Solaris (see README.Solaris)
> mtx: Request Sense: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> mtx: READ ELEMENT STATUS Command Failed
Presumably there is no LUN 1.
-
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