I tried both the VARY OFF/ON and RESET ASSIGN ON RDEV but neither seem to
do anything if issued from a system other than where the ATTACH with ASSIGN
command was issued. What did work was issuing the RESET ASSIGN command on
the system with the ID owning the ASSIGN bit. Doing that I was able to
ATTACH the drive to an id on the other system. Right now it's ATTACHed to
an id on both systems.
I understood from the following that you could reset the ASSIGN bit from
any system. By the way, I am on z/VM 4.4 and was experimenting with a 3480.
Jim
At 07:10 PM 8/8/2006, you wrote:
<snip>
The other "incantation" that will reset the ASSIGN (other than CP RESET
ASSIGN ON RDEV) is the CP VARY OFF/VARY ON sequence. Because you
indicated you run MIM, you have to ability to issue a MIM command from
one system to VARY OFF the drive on *all* systems, then VARY ON again.
That's why the suggestion was offered to use that approach to minimize
the effort to resolve the problem.
Of course, what this doesn't do is identify the offending node with the
"bad application". If that's important to you, then I think you're
stuck with the hunt-and-peck method of resolution.
JR
JR (Steven) Imler
CA
Senior Software Engineer
Tel: +1 703 708 3479
Fax: +1 703 708 3267
[EMAIL PROTECTED]
-----Original Message-----
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Alan Ackerman
Sent: Tuesday, August 08, 2006 06:29 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Who has the tape drive ASSIGNed?
I am informed that this particular case was NOT caused by CA-BAB. (We
hav=3D
e=20
had other cases.) We don't know what was the cause.
z/OS isn't relevent here, though we have had similar error messages=20
involving sharing with z/OS at other times.=20
We have 3 VM systems, and 10 guests, involved. We issued:
QUERY 366 (or QUERY TAPE FREE) on all systems that have access to 366. =
=3D
=20
Every system responded with TAPE 0366 FREE=20
ATTACH 366 * on some systems produced=20
"Tape 0366 not attached; tape assigned elsewhere."
Eventually we found a guest that allowed us to attach the tape, so we=20
assune that system had it assigned. We haven't the foggiest why -- that
=3D
system wasn't running anything special.
I gather that CP (or VMTAPE) sends a CCW to the controller to get=20
the "assigned elsewhere" information. Is there any CCW to find out where
=3D
it IS assigned?
Jim Bohnsack
Cornell Univ.
(607) 255-1760
