Thanks to all that responded.

Having the feature ?enable dynamic_I/O? set in the parm does not do any 
good. When z/VM is reactivated, it is automatically disabled because of an 
invalid z/VM token. This is because I maintain the I/O configuration under 
z/OS and the token is z/OS. From the manual:

If one operating system discovers (by checking the configuration token) 
that the other operating system "owns" the I/O configuration, the 
operating system that discovered the change will disable its own dynamic 
I/O support. That is, if z/OS finds a VM configuration token in the 
hardware system area (HSA), z/OS disables its dynamic I/O support and, 
thereafter, can only make changes to the software I/O configuration. If 
z/VM finds a z/OS configuration token, z/VM disables its dynamic I/O 
support and, thereafter, can make software-only changes.

I deactivated and reactivated the LPAR and that still did not do any good. 
I think what you meant was the ?Enable 
New_Devices_Initialized_When_Added?. I issued a ?q new_devices? which said 
it was already enabled.

I queried the CHPID and it said it was online but there were no devices. 
However, once I varied the CHPID online, all my devices appeared. 

One last question:

How can I query which IOCDS z/VM is using:

Thanks as always.

Peter




Alan Altmark <[EMAIL PROTECTED]> 
Sent by: Linux on 390 Port <[EMAIL PROTECTED]>
08/19/2005 10:42 PM
Please respond to
Linux on 390 Port <[EMAIL PROTECTED]>


To
[EMAIL PROTECTED]
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Subject
Re: z/VM I/O Config Question






On Friday, 08/19/2005 at 10:03 EST, "McKown, John"
<[EMAIL PROTECTED]> wrote:
> > I just implemented some modifications to our I/O
> > configuration using HCD
> > on z/OS. We maintain our IODFs under z/OS and issue activates for the
> > other z/OS LPARs. How do I get z/VM to recognize our new I/O changes
> > dynamically? Thanks.
>
> It appears that you will need to create an IOCP input deck from the z/OS
> IODF file in question and send that over to the z/VM system (to the user
> which will be doing the dynamic activation - probably MAINT?)

As long as DYNAMIC_I/O is enabled in SYSTEM CONFIG, CP will react to
devices that come or go due to dynamic updates to the I/O subsystem.  No
need to send the IODF to VM since VM isn't the LPAR controlling the I/O
config.  (Unlike MVS, CP doesn't use an IODF to figure out what devices
are available and what kind they are.)

Alan Altmark
z/VM Development
IBM Endicott

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