Each of our VM systems had a minidisk on a shared pack (with CSE) that we
used to test of the target VM system was still up.  To assure there was
always some LINK to this minidisk, we had it linked by quite a few service
machines (VMUTIL, RSCS, Operator, etc).  The chance that all of these
service machines would be logged off at the same time were pretty small.
You could do something similar.

2011/3/8 Frank M. Ramaekers <framaek...@ailife.com>

> I simply use this (at the end of the PROFILE EXEC for the user that "owns"
> the VDISKS):
>
>  Do forever
>    Say "Staying alive, staying alive....(99 hours)..."
>    "CP SLEEP 99 HRS"
>  End
>
>
> Frank M. Ramaekers Jr.
>
>
> -----Original Message-----
> From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On
> Behalf Of Wandschneider, Scott
> Sent: Tuesday, March 08, 2011 11:58 AM
> To: IBMVM@LISTSERV.UARK.EDU
> Subject: Virtual Lock File
>
> I have a SVM called VDISKS the creates and initializes a virtual lock file
> for four VSE guest to use.  After a short time, VDISKS is logged off by the
> system.  All is fine if at least one VSE remains logged on, however if all
> are logged off the virtual lock file goes away also.  How can I keep VDISKS
> from being logged off by the system?
>
> * * * Top of File * * *
> USER VDISKS $SECRET$ 4M 4M BG 90
> *NAME: VIRTUAL_DISKS
>   ACCOUNT SYSTEMS SUPPORT
>   COMMAND SET RUN ON
>   IPL CMS
>   MACH ESA
>   XAUTOLOG AUTOLOG1 MAINT
>   CONSOLE 0009 3215 T OPERATOR
>   SPOOL 000C 2540 READER *
>   SPOOL 000D 2540 PUNCH A
>   SPOOL 000E 1403 A
>   LINK MAINT 0190 0190 RR
>   LINK MAINT 019D 019D RR
>   LINK MAINT 019E 019E RR
>   MDISK 0191 3390 499 001 PKSCMS MR ALL WRITE MULTIPLE
>   MDISK 0222 FB-512 V-DISK 6208 MWV ALL
> *DVHOPT LNK0 LOG1 RCM1 SMS0 NPW1 LNGAMENG PWC20101121 CRCc
>
>  PROFILE  EXEC     Z1  V 130  Trunc=130 Size=14
> ====>
>      |...+....1....+....2....+....3....+....4..
> 00000 * * * Top of File * * *
> 00001 /* */
> 00002 'CP SPOOL CONSOLE START MAINT CLASS M'
> 00003 Trace I
> 00004 'EXECIO * CP (STRING Q' USERID()
> 00005 PULL @RESPONSE
> 00006 PARSE VAR @RESPONSE @USERID . @TERMID
> 00007 IF @TERMID = 'DSC' THEN DO
> 00008    EXEC INITVDSK
> 00009    SLEEP 05 SEC
> 00010    'CP SPOOL CONSOLE CLOSE'
> 00011    EXIT
> 00012 END
> 00013 SET PF12 RETRIEVE
> 00014 EXIT
> 00015 * * * End of File * * *
>
>  INITVDSK EXEC     Z1  V 130  Trunc=130 Size=8
> ====>
>      |...+....1....+....2....+....3....+....4
> 00000 * * * Top of File * * *
> 00001 /* EXEC TO INITIALIZE ALL VDISKS    */
> 00002 Trace I
> 00003 ERASE DSFOUT OUTPUT A
> 00004 PUSH 'DSFOUT'
> 00005 PUSH 'INITV222'
> 00006 ICKDSF
> 00007 'CP LINK * 222 222 RR'
> 00008 EXIT
> 00009 * * * End of File * * *
>
>  INITV222 INPUT    Z1  F 80  Trunc=80 Size=1 Line=0 Col=1 Alt=0
> ====>
>      |...+....1....+....2....+....3....+....4....+....5....+....6....
> 00000 * * * Top of File * * *
> 00001  INIT UNIT(222) NVFY NOMAP PURGE VOLID(VSELOK) FBAVTOC(6200,8)
> 00002 * * * End of File * * *
>
> Thank you,
> Scott R Wandschneider
> Systems Programmer 3|| Infocrossing, a Wipro Company || 11707 Miracle Hills
> Drive, Omaha, NE, 68154-4457|| : 402.963.8905 || :847.849.7223  ||  :
> scott.wandschnei...@infocrossing.com **Think Green  - Please print
> responsibly**
>
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-- 
Kris Buelens,
IBM Belgium, VM customer support

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