The successful completion could be due to the device finally completing or
timing out the I/O, CP's MITIME (Missing Interrupt handler) timeout value
for that device, CP's timebomb cleanup (15 minute default, see
"DISCONNECT_TIMEOUT" value in "SYSTEM CONFIG"), good fortune, aligned
planets, or something else entirely.
The CP command "HALT" is good to know when a real device is causing some
problems. But I've see that fail to work the first time it is issued.
Hence, the pasted "REHALT EXEC", below...
Mike Walter
Hewitt Associates
The opinions expressed herein are mine alone, not my employer's.
/* Prolog; See Epilog for additional information ********************
* Exec Name - REHALT EXEC *
* Unit Support - OSS/VM *
* Status - Version 1, Release 1.0 *
********************************************************************/
address 'COMMAND'
parse source xos xct xfn xft xfm xcmd xenvir .
parse upper arg parms 1 operands '(' options ')' parmrest
Signal ON Syntax
Signal ON NoValue
/* Signal ON ERROR */
/* Expected replies, all rc=0 ...
Halt initiated to tape nnnn
Halt was not initiated to tape nnnn because the device as not active
*/
parse var operands rdev .
If operands='' | operands='?' then Signal Explain
parse var options limit .
If limit='' then limit=50
Do ix=1 to limit /* until word2='INITIATED' */
'PIPE LITERAL +0.25 | DELAY'
parse upper value diag(08,'CP HALT' rdev) with reply '15'x ,
1 . word2 . '15'x .
End
say reply '('ix 'tries)'
If word2='INITIATED' then Call Exit 0
else Call Exit 36
/********************************************************************/
/* Sub-Routines below this point */
/********************************************************************/
Exit:
parse arg exitrc .
If verify(exitrc,'-0123456789')=0 then Exit exitrc
else Exit 999999
Syntax:
say '+++ Syntax error routine entered in:' xfn xft xfm
say '+++ from line:' sigl', which reads:'
say '+++'sourceline(sigl)
Call Exit 20
NoValue:
say '+++ NoValue error routine entered in:' xfn xft xfm
say '+++ from line:' sigl', which reads:'
say '+++'sourceline(sigl)
say '+++ Variable with no value is:' condition('Description')
Call Exit 24
Explain:
say 'REHALT can be used to get a stubborn device (usually tape) offline'
say 'when a single HALT does not stop it - sometimes due to MISSING'
say 'INTERRUPT.'
say
say 'Syntax:'
say ' +-( 50----------------------+ '
say '>--REHALT--rdev-----------------+---------------------------+--><'
say ' +-( max numer of retries )--+ - '
Call Exit 0
/* Epilog ***********************************************************
* Dependencies - VM/SP 3 or higher. *
* - e.g. LISTFILE, COPYFILE, etc. *
* Program Lang. - CMS REXX *
* Date Written - 20040405 *
* Author - Michael R. Walter *
* Changed | By | Description of Change *
* --------+-----+------------------------------------------------- *
* yyyymmdd iii - *
* *
********************************************************************/
"Wandschneider, Scott" <[email protected]>
Sent by: "The IBM z/VM Operating System" <[email protected]>
10/12/2009 01:36 PM
Please respond to
"The IBM z/VM Operating System" <[email protected]>
To
[email protected]
cc
Subject
Re: LOGOFF/FORCE pending
The hung User completed its logoff before I could issue the HALT. It was
hung for about 30-35 minutes before completing.
Thank you,
Scott
From: The IBM z/VM Operating System [mailto:[email protected]] On
Behalf Of Imler, Steven J
Sent: Monday, October 12, 2009 1:31 PM
To: [email protected]
Subject: Re: LOGOFF/FORCE pending
Issue a CP HALT to the REAL device ...
JR (Steven) Imler
CA
Senior Sustaining Engineer
Tel: +1-703-708-3479
[email protected]
From: The IBM z/VM Operating System [mailto:[email protected]] On
Behalf Of Wandschneider, Scott
Sent: Monday, October 12, 2009 02:19 PM
To: [email protected]
Subject: LOGOFF/FORCE pending
I have a LOGOFF/FORCE pending situation and I know which device is hung.
Any ideas on how to clear the device so the force may complete?
Thank you,
Scott R Wandschneider
Senior Systems Programmer|| Infocrossing, a Wipro Company || 11707 Miracle
Hills Drive, Omaha, NE, 68154-4457|| ': 402.963.8905 || Ë:847.849.7223 ||
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