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

#### MRSTOVDK

Prolog
Control Block Contents
Cross Reference

#### MRSTOVDK Prolog

     DSECT NAME - STOVDK
     FUNCTION - Map a Monitor record.
     LOCATED BY -
            Through the Monitor Control Area
     REFERENCED CONTROL BLOCKS -
            MRRECHDR    Monitor Record Header
     NAME - MRSTOVDK
     DESCRIPTIVE NAME - Monitor Sample Record
                        Domain 3  - Storage Domain
                        Record 17 - virtual disk in storage
     DESCRIPTION - Information concerning usage of virtual disks in
                   storage.  Once record for each disk.

#### MRSTOVDK Control Block Contents

    Offsets
    Dec  Hex  Type        Len  Name (Dim)             Description

       0   0  Structure    68  STOVDK                 Start of monitor record
       0   0  Character     0  STOVDK_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  STOVDK_MDIOUSER        Owning userid, padded on
                                                      the right with blanks.
      28  1C  Character    24  STOVDK_QDISNAME        Address space name
                                                      associated with this virtual
                                                      disk in storage, padded on
                                                      the right with blanks.
      52  34  Unsigned      2  STOVDK_MDIOVDEV        VDEV number of the virtual
                                                      disk in storage.
      54  36  Bitstring     1  STOVDK_CALFLAG         Flag byte.
              1... ....        *
              .1.. ....        *
              ..1. ....        *
              ...1 ....        *
              .... 1...        STOVDK_MDIQDSKP         This is a private virtual
                                                      disk in storage.
              .... .1..        *
              .... ..1.        *
              .... ...1        *
      55  37  Character     1  *                      Reserved for IBM use.
      56  38  Unsigned      4  STOVDK_MDILINKS        Number of links to this
                                                      disk
      60  3C  Unsigned      4  STOVDK_CALSIZE         Size of disk in 512 byte
                                                      blocks.
      64  40  Unsigned      4  STOVDK_QDIIOCNT        Count of virtual I/Os to
                                                      this virtual disk in storage.
      68  44  Character     0  STOVDK_END

#### MRSTOVDK Cross Reference

                          Hex           Hex
    Name                  Offset Length Value

    MRHDR                      0     20
    MRHDR_END                 14      0
    MRHDRDM                    4      1
    MRHDRLEN                   0      2
    MRHDRRC                    6      2
    MRHDRTOD                   8      8
    MRHDRZER                   2      2
    STOVDK                     0     68
    STOVDK_CALFLAG            36      1
    STOVDK_CALSIZE            3C      4
    STOVDK_END                44      0
    STOVDK_MDILINKS           38      4
    STOVDK_MDIOUSER           14      8
    STOVDK_MDIOVDEV           34      2
    STOVDK_MDIQDSKP           36           08
    STOVDK_MRHDR               0      0
    STOVDK_QDIIOCNT           40      4
    STOVDK_QDISNAME           1C     24

    This information is
    based on z/VM V7R2.0.

    Last updated on 08 August 2020 at 15:04:39.

    Copyright IBM Corporation, 1990, 2020