Hi there,
My question was :-
> I have recently purchased an Exabyte 8505 half-height unit with
> compression to install on my 4/330 box.
>
> The supplier sent me a sheet of mods to make to the st_conf.c file.
> This file does not appear to exist on the sun4 distribution and
> so booting the machine with this device connected gives an error
> indicating that an "unknown tape drive" has been found.
>
> Does anyone know if and how I can get the full performance
> available from the 8505 when connected to a 4/330.
>
>
Solution
--------
Chris Hanson (Chris@TechSource.com) said the following.
You need to edit the file /usr/sys/sundev/streg.h on your Sun4. The
/sys/scsi/tergets/st_conf.c file is for Sun4C machines like the SPARC II.
This is what you need to add to that file:
/* Exabyte 8mm 5GB w/compression cartridge (half height) */ \
{ \
"Exabyte EXB8505", 16, "EXABYTE EXB-8505", ST_TYPE_EXB8500, \
1024, (ST_VARIABLE | ST_BSF | ST_BSR | ST_LONG_ERASE | ST_PHYSREC), \
8000000, 30, 30, 30, 30, 60, 60, 60, 60, \
0x14, 0x15, 0x90, 0x8c, 0, 0, 0, 0 \
}, \
and build your kernel.
I will be trying this on the next reboot of the server so cannot confirm
that is cured my problem yet but have posted back for others waiting for
a reply to the same question.
It was suggested that I ask my supplier about this problem. I had already
done so. I was told that this device was not fully supported on the sun4
platform.
My thanks are due to
Chris Hanson (Chris@TechSource.com)
Glenn Satchell (glenn@uniq.com.au)
Thomas Oliver (oliver@ast.saic.com)
Andrew Mellanby (mel@maths.aberdeen.ac.uk)
Dave
***************************************************************************
Dr. Dave Checketts | JANET: d.g.checketts@uk.ac.bham
Computer Officer | INTERNET: checkedg@eee.bham.ac.uk
School of Elec. & Elec. Eng., |
University of Birmingham | Telephone: 021 414 4322
Birmingham, B15 2TT, | Fax: 021 414 4291
England
***************************************************************************
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:08:29 CDT