On Friday, 11/05/2010 at 11:30 EDT, Mike Walter <[email protected]> wrote:
> But now the wrinkle. Some very clever high-speed z/OS ISV software is > issuing some unsupported (by z/VM) CCWs to that DASD. For those CCWs to > work, I'll need to define the DASD in SYSTEM CONFIG using the RDEVICE > statement to tell CP to keep its mitts off the CCWs as: > > RDEVICE rdev-rdev TYPE UNSUPPORTED DEVCLASS DASD ... > > Unfortunately, the doc for the RDEVICE statement relates: > > "Note: When you define an unsupported device, you must dedicate the device > to a virtual machine. To do this, specify the DEDICATE directory control > statement in the virtual machine?s directory statement or issue the CP > ATTACH command."... > > One cannot DEDICATE or ATTACH devices to one guest when they need to be > shared by all three guests. > > Have I missed/forgotten some obscure technique to manage this? Nope, you have the right of it. Contact the Support Center for assistance. Depending on the particulars, there may be a fix or circumvention available. Alan Altmark z/VM and Linux on System z Consultant IBM System Lab Services and Training ibm.com/systems/services/labservices office: 607.429.3323 [email protected] IBM Endicott
