z/VM: CP Planning and Administration - z/VM - IBM

System Configuration FileCP_OWNED Statement►► CP_OWNed Slot nnn RESERVEdOwnvolidDumpShared►◄PurposeUse the CP_OWNED statement to define a list of up to 255 CP-owned DASDvolumes. CP-owned DASD volumes are the CP system residence volume and anyvolumes containing real system paging, spooling, dump, directory, and temporarydisk space.If you are not using cross system spool (XSPOOL) file sharing, you can use anyvolumes listed on a CP_OWNED statement and containing spool space to read andwrite spool files. (CP writes spool files only once, when they are created.)If you are using cross system spool (XSPOOL) file sharing, physical sharing of thespooling DASD provides shared access to spool files for all systems in the complex.Although physically this is both read and write sharing, logically the sharing isread-only. Therefore, you must identify some volumes as available for writing thespool files created on this system, and others as available only for reading spoolfiles created on other systems. You can identify these volumes using the OWN andSHARED options of the CP_OWNED statement.Note: We strongly recommend that you do not share the system residencevolumes and paging volumes among systems in a cross system spoolingcomplex.How to SpecifyInclude as many statements as needed; they are optional. You can placeCP_OWNED statements anywhere in the system configuration file. If you specifymore than one statement with the same slot number, CP uses only the firststatement. Subsequent CP_OWNED statements do not redefine the slot.OperandsSlot nnntells CP the number of the slot in the CP-owned volume list. nnn must be adecimal number from 1 to 255.RESERVEdtells CP to reserve the slot for future use.volidis the 1-character to 6-character volume serial number of the volume you wantto include in the CP-owned volume list.Own(the default) tells CP that the system you are generating owns the specifiedvolume and that only this system can create or destroy spool files on thisvolume. The other systems in the cross system spooling complex, which defineChapter 6. The System Configuration File 73