Using a Sun tape drive under SunOS 4.1.1

[dmitchell@trc.amoco.com (Donald H. Mitchell)]

We can no longer make tapes from the Symbolics because it hangs the Suns.
We've shown that a simple Unix script is sufficient to cause this hangup;
however, Sun and Symbolics have been unable to duplicate this behavior.  We've
shown this behavior on Sun 4/2xx's and 4/3xx's and 4/4xx's.  We know that the
tape access works under SunOS 4.1.0 or earlier but not 4.1.1

My plea: can anyone else duplicate this behavior or suggest possible causes?

Here's the script (put a tape in the drive and save everything you're doing
first) 

rmt
O/dev/rst0
0		
I5
1	


Here's it with comments

rmt		; start up the remote tape program
O/dev/rst0	; user input saying open the device
0		; user input parameter for open (arbitrary value in this case?)
A3		;rmt responded saying all is well
I5		; user input saying rewind the tape
1		; user input additional parameter to rewind
A1		;response if things work but under 4.1.1 system crashes before
                ;response.

Don Mitchell			dmitchell@trc.amoco.com
Amoco Production Company	(918) 660-4270
Tulsa Research Center
P.O. Box 3385, Tulsa, OK 74102