Programming Interface Information:
The Monitor Records are intended Programming Interfaces that
allow the customer to write programs to obtain services of z/VM.
Control Block Contents
DSECT NAME - IODLPT FUNCTION - This record indicates an LSS PAV Transition LOCATED BY - Through the Monitor Control Area REFERENCED CONTROL BLOCKS - MRRECHDR Monitor Record Header NAME - MRIODLPT DESCRIPTIVE NAME - Monitor Event Record Domain 6 - I/O Domain Record 30 - LSS PAV Transition DESCRIPTION - Indicates an LSS PAV transition NOTES: The SSID (Subsystem ID) is a unique value that distinguishes a logical control unit from any other in a configuration. This value can be obtained from a Q DASD DETAILS command executed against one of the device's on the control unit. An LSS (Logical Subsystem) is a logical control unit within a physical control unit. The LSS number is only unique within the physical control unit and not unit across control units. Currently there is no query command that presents this inforamtion. Codes defined for IODLPT_CUIPVOPR_OLD/NEW: IODLPT_CUINPVOP: '01'X CU is operating in No PAV mode IODLPT_CUIPAVOP: '02'X CU is operating in Basic PAV mode IODLPT_CUIHYPOP: '03'X CU is operating in HyperPAV mode IODLPT_CUIUNDET: 'FF'X CU operating mode is undeterminable
MRIODLPT Control Block ContentsOffsets Dec Hex Type Len Name (Dim) Description 0 0 Structure 28 IODLPT Start of monitor record 0 0 Character 0 IODLPT_MRHDR Record header. See MRRECHDR for details. 0 0 Character 20 MRHDR 0 0 Unsigned 2 MRHDRLEN record length in bytes 2 2 Unsigned 2 MRHDRZER field of zeros 4 4 Unsigned 1 MRHDRDM domain identifier 5 5 Unsigned 1 * 6 6 Unsigned 2 MRHDRRC record identifier 8 8 Character 8 MRHDRTOD Time at which this record was built. In time-of-day (TOD) clock format. See IBM System 370 XA Principle of Operation for explanation of format. 16 10 Character 4 * 20 14 Character 0 MRHDR_END End of header 20 14 Unsigned 2 IODLPT_CUIDSSID Subsystem ID (SSID) 22 16 Unsigned 1 IODLPT_CUIPVOPR_OLD Old PAV operating state 23 17 Unsigned 1 IODLPT_CUIPVOPR_NEW New PAV operating state 24 18 Character 4 * Reserved and available for IBM use. 28 1C Character 0 IODLPT_END
MRIODLPT Cross ReferenceHex Hex Name Offset Length Value IODLPT 0 28 IODLPT_CUIDSSID 14 2 IODLPT_CUIPVOPR_NEW 17 1 IODLPT_CUIPVOPR_OLD 16 1 IODLPT_END 1C 0 IODLPT_MRHDR 0 0 MRHDR 0 20 MRHDR_END 14 0 MRHDRDM 4 1 MRHDRLEN 0 2 MRHDRRC 6 2 MRHDRTOD 8 8 MRHDRZER 2 2
This information is based on z/VM V6R1.0.
Last updated on 8 Oct 2009 at 21:08:13.
Copyright IBM Corporation, 1990, 2009