We have already been doing it for a few years.

Regards, 
Richard Schuh 

 

> -----Original Message-----
> From: The IBM z/VM Operating System 
> [mailto:[email protected]] On Behalf Of Gregg
> Sent: Wednesday, July 14, 2010 1:06 PM
> To: [email protected]
> Subject: Re: Devices OFFLINE at IPL
> 
> I don't know, give it a try; from LP1 define a device on LP2 
> that has a CU w/paths candidate/access lists.  If LP2 has 
> not_accepted it won't show up... w/o intervention, such as cp 
> set accepted... then if you're wild enough to have 2 LPars 
> w/DynIO enabled, you can steel the cookie and define a device 
> from LP2 on LP2... I'm thinking it'll pop up, regardless of 
> not_accepted, according to help cp set devices; if you don't 
> have sensed set, you'll need to cp set rdev or attach it a 
> guest.  CP will build the RDEV blocks and RDCBK's, if light 
> gets thru the director, to the cu interface and it'll be 
> there for a vary online. Some time ago, we had a project to 
> *conditionally* allow VM access to at least a simplex copy of 
> TPF on-line dasd for a cmstpf build, Not_Accepted wasn't a 
> lock for us and a CP EXIT we tried was a performance 
> nightmare... but that is an entirely different story.
> ymmv.
> On Wed, Jul 14, 2010 at 3:10 PM, Schuh, Richard 
> <[email protected]> wrote:
> > That may have been the original intent; however, customers 
> always find ways to use features that may not have been 
> considered by the designer. If we didn't, VM would have been 
> a conversion tool with a 2 year life span.
> >
> > If a device is sensed and there is a device present, a 
> VMDBK is built for it regardless of its online/offline 
> status. There may be other blocks created for it as well. 
> Making the device Not_Accepted prevents the sensing of the 
> device and the building of the blocks. It is possible to 
> dynamically add the device later using the DEFINE and SET 
> commands, just as you would a device dynamically added to the LPAR.
> >
> > Regards,
> > Richard Schuh
> >> > Regards,
> >> > Richard Schuh
> 
> --
> Gregg Reed
> "No Plan, survives execution"
> 

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