Exabyte (error: ds=5) ??

[Eric Ho]

Has anyone tried putting more than 8 small dumps (20meg~50meg each) onto a
single 8mm tape over a period of 8 days ?

I tried appending the 9th dump (about 20meg) today and got barfed at by
the Exabyte.

The machine with the exabyte drive is called cognito and the machine that
I want to dump from is called clarity.  Both machines are running SunOS
4.0.1.  cognito is a Sun-4/260 with a local scsi disk (327meg) and a local
1/4-inch cartidage tape drive and clarity is a Sun-4/280S with an Eagle
and a Hitachi.  The Exabyte device drive I'm using on cognito is from
Apunix.

Here is what I've done.

==========================================
cognito-root(2)-[/]: mt -f /dev/rxb0 rew
cognito-root(3)-[/]: mt -f /dev/nrxb0 fsf 16
cognito-root(4)-[/]: 

clarity-root(9)-[/]: dump 0unsf 14500 cognito:/dev/nrxb0 /dev/rxy1f
  DUMP: Date of this level 0 dump: Mon Aug 28 15:04:50 1989
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/rxy1f (/spare) to /dev/nrxb0 on host cognito
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 30480 blocks (14.88MB) on 0.07 tape(s).
  DUMP: dumping (Pass III) [directories]
  DUMP: dumping (Pass IV) [regular files]
  DUMP: write: I/O error

  DUMP: write: I/O error

  DUMP: Tape write error 26 feet into tape 1
  DUMP: NEEDS ATTENTION: Do you want to restart?: ("yes" or "no") no
  DUMP: The ENTIRE dump is aborted.
clarity-root(10)-[/]: 

==========================================

Here is the message I found on cognito:/var/adm/messages :-
==========================================
Aug 28 15:05:12 cognito vmunix: xb0: SCSI device error cs=c0<CC,ERR> ss=0x2 (check \condition) ds=5 (illegal request)
==========================================

Does any know what kind of error is that ?  Is it because I haven't cleaned my
drive ?  I hope that it is nothing serious though.

Any pointers will be much appreciated.
--

Eric Ho
Cognitive Science Lab.,		Princeton University
voice = 609-987-2987		email = eho at confidence.princeton.edu
	609-987-2819 (messages)		eho at bogey.princeton.edu

regards.

-eric-