Is z/OS in another LPAR on the same box?
If so, it's easiest just to let them do it and VM will just see the changes.



Marcy

From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf 
Of Michael Coffin
Sent: Tuesday, June 07, 2011 8:15 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: [IBMVM] Dynamic Activation of New IODF

Hi Folks,

For many (many) years, when it comes to managing the IOCDS I  simply 
hand-create an IOCP file, use IOCP with WRTAx to store it, and do a POR to load 
it.  If the changes are needed immediately, I use CP commands to manually 
define the new hardware.

Our z/OS guys want to manage the IOCDS and be able to dynamically activate an 
entirely new IODF file (created either on their system or using VM's HCM/HCD).  
I'm unclear as to when/how the changed IODF file becomes dynamically available 
to the running z/VM system.  Let's say I store the new IODF using IOCP with 
WRTAx to store it, and then execute SET IOCDS_Active to mark it as the active 
IOCDS - according to the doc for SET IOCDS_Active this simply marks the IOCDS 
as active for the NEXT POR (and write-protects it) - but it doesn't look like 
the changes in the new IOCDS are reflected to the running z/VM system until a 
POR occurs.

What am I missing here?  Is it even possible to store a new IOCDS, mark it as 
active for the next POR AND have CP add/change/delete IO definitions by 
comparing the prior IOCDS with the newly activated one?

-Mike

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