On Thursday, 04/10/2008 at 02:54 EDT, "Quay, Jonathan (IHG)" <[EMAIL PROTECTED]> wrote: > To share with other LPARS you need REAL reserve/release, which I think > entails coding SHARED in on the RDEV in the system configuration file.
1. The MDISK must be defined as MWV. If you don't do that, the virtual machine will get a COMMAND REJECT on a RESERVE CCW. 2. A successful RESERVE is always enforced on the local VM system. Always. 3. If the MDISK is a fullpack minidisk (DEVNO or 0-END) then the minidisk is ELIGIBLE for real RESERVE/RELEASE. 4. If the volume containing the mdisk is defined as SHARED in SYSTEM CONFIG or via SET SHARED ON, a virtual R/R will be enforced locally AND a real R/R will flow to the volume. So the only case where a real Reserve/Release is used is MWV + fullpack + SHARED. Alan Altmark z/VM Development IBM Endicott
