[comp.unix.ultrix] Ultrix 3.0 & 3.1 /dev/

ericw@janis.UUCP (Eric Wedaa) (05/21/91)

Has anyone else out there in net-land had the following problems with TK50s
and TK70s:

I insert a tape (tk70 for a tk70, etc) into the tape drive, and type the 
following commands:

#mt rewind
device /dev/nrmt0h does not exist
	(Not the exact message, as it has since scrolled to /dev/null)

#mt -f /dev/rmt0h rewind
device /dev/rmt0h does not exist

#mt -f /dev/nrmt0h rewind
device /dev/nrmt0h does not exist

Nothing short of a reboot or waiting a variable number of hours (1-I can't
wait any longer (>48)) seems to cure this.  Has anyone else had this problem 
and come up with a solution?

>>>Eric
-- 
=====================================================================
|  These views are mine, and not those of my company or co-workers. |
=====================================================================

hudgens@sun13.SCRI.FSU.EDU (Jim Hudgens) (05/25/91)

In article <118@janis.UUCP> ericw@janis.UUCP (Eric Wedaa) writes:

   Has anyone else out there in net-land had the following problems with TK50s
   and TK70s:

   I insert a tape (tk70 for a tk70, etc) into the tape drive, and type the 
   following commands:

   #mt rewind
   device /dev/nrmt0h does not exist
	   (Not the exact message, as it has since scrolled to /dev/null)

   #mt -f /dev/rmt0h rewind
   device /dev/rmt0h does not exist

   #mt -f /dev/nrmt0h rewind
   device /dev/nrmt0h does not exist

   Nothing short of a reboot or waiting a variable number of hours (1-I can't
   wait any longer (>48)) seems to cure this.  Has anyone else had
   this problem and come up with a solution?

I have seen similar behavior with TU81's on a VAX6420 (Ultrix 3.1), 
as well as on TK50's and TK70's.  One cause is to turn the 
tu81 off, and it's basically gone until reboot.  I found this 
out within days of getting the machine (6420).

Also, we now have one of the 8mm tape devices which hooks into the
TU81.  The combination is unstable and basically unworkable --- 
the 8mm crashes (lots of digits on the little lcd screen saying 
to call the manufacturer) and then you get a controller fault.
After that any access to the tape drive hangs for some period of 
time, and may/may not clear.  We really can't complain to dec,
since the 8mm install did violate the warranty on the tu81 drive and
controller.  Power-cycling the 8mm fails, as does almost everything 
else I've tried.

At one point, we received a tape which, when we attempted to read
on a TK50 and two TK70's, caused all three tape drives to hang
with the processes in an D state.

Anyone have similar experiences???

JHH

--
Jim Hudgens		Supercomputer Computations Research Institute
hudgens@sun13.scri.fsu.edu
"Nothing's for sure except DEC and VAXe .. er, death and taxes"