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

#### MRIODMDE

Prolog
Control Block Contents
Cross Reference

#### MRIODMDE Prolog

     DSECT NAME - IODMDE
     FUNCTION - Map a Monitor record.
     LOCATED BY -
            Through the Monitor Control Area
     REFERENCED CONTROL BLOCKS -
            MRRECHDR    Monitor Record Header
     NAME - MRIODMDE
     DESCRIPTIVE NAME - Monitor Event Record
                        Domain 6 - I/O Domain
                        Record 31- Minidisk Activity
     DESCRIPTION - Indicates Minidisk Cache (MDC) setting has been
                   changed automatically by CP

#### MRIODMDE Control Block Contents

    Offsets
    Dec  Hex  Type        Len  Name (Dim)             Description

       0   0  Structure    84  IODMDE                 Start of monitor record
       0   0  Character     0  IODMDE_MRHDR           Record header. See MRRECHDR
                                                      for details.
       0   0  Character    20  MRHDR
       0   0  Unsigned      2  MRHDRLEN
       2   2  Unsigned      2  MRHDRZER
       4   4  Unsigned      1  MRHDRDM
       5   5  Unsigned      1  *
       6   6  Unsigned      2  MRHDRRC
       8   8  Character     8  MRHDRTOD
      16  10  Character     4  *
      20  14  Character     0  MRHDR_END
      20  14  Character     8  IODMDE_MDIOUSER        Minidisk owner userid
      28  1C  Bitstring     2  IODMDE_MDIOVDEV        Minidisk owner VDEV number
      30  1E  Character    40  IODMDE_EQIDUID         EQID of real device
      70  46  Bitstring     4  IODMDE_MDIVSEXT        Start extent
      74  4A  Bitstring     4  IODMDE_MDIVEEXT        End extent
      78  4E  Bitstring     1  IODMDE_CALFLAGS        Flag Byte
              1... ....        IODMDE_MDCSETTG         OFF = XDISK set MDC OFF ON
                                                      = XDISK doesn't care
              .1.. ....        IODMDE_EQIDUHSH         ON = system generated EQID
                                                      which is 40 bytes in
                                                      IODMDE_EQIDUID OFF = user
                                                      generated EQID which is 8
                                                      bytes in IODMDE_EQIDUID
              ..1. ....        *
              ...1 ....        *
              .... 1...        *
              .... .1..        *
              .... ..1.        *
              .... ...1        *
      79  4F  Character     1  *                      Reserved for IBM use
      80  50  Unsigned      2  IODMDE_RDEVDEV         Real device number
      82  52  Unsigned      2  *                      Reserved for IBM use
      84  54  Character     0  IODMDE_END

#### MRIODMDE Cross Reference

                          Hex           Hex
    Name                  Offset Length Value

    IODMDE                     0     84
    IODMDE_CALFLAGS           4E      1
    IODMDE_END                54      0
    IODMDE_EQIDUHSH           4E           40
    IODMDE_EQIDUID            1E     40
    IODMDE_MDCSETTG           4E           80
    IODMDE_MDIOUSER           14      8
    IODMDE_MDIOVDEV           1C      2
    IODMDE_MDIVEEXT           4A      4
    IODMDE_MDIVSEXT           46      4
    IODMDE_MRHDR               0      0
    IODMDE_RDEVDEV            50      2
    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 16:08:41.

    Copyright IBM Corporation, 1990, 2020