Programming Interface Information: The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM.

#### MRIODLPT

Prolog
Control Block Contents
Cross Reference

#### MRIODLPT Prolog

     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 unique
         only within the physical control unit and not unique
         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 Contents

    Offsets
    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 Reference

                          Hex           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 V7R2.0.

    Last updated on 09 August 2020 at 16:04:09.

    Copyright IBM Corporation, 1990, 2020