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

MRMTRPAG

Prolog
Control Block Contents
Cross Reference

MRMTRPAG Prolog

 DSECT NAME - MTRPAG
 FUNCTION - Map a Monitor record.
 LOCATED BY -
        Through the Monitor Control Area
 REFERENCED CONYTOL BLOCKS -
        MRRECHDR    Monitor Record Header
 NAME - MRMTRPAG
 DESCRIPTIVE NAME - Monitor Sample Configuration Record
                    Domain 1 - Monitor Domain
                    Record 8 - Paging Configuration Data
 DESCRIPTION - Identifies paging and spooling space available
               on CP owned DASD. A separate record is generated
               for each contiguous paging area and each contiguous
               spooling area on a CP volume.

MRMTRPAG Control Block Contents

Offsets
Dec  Hex  Type        Len  Name (Dim)             Description
 
   0   0  Structure    64  MTRPAG                 Start of monitor record
   0   0  Character     0  MTRPAG_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     6  MTRPAG_CPVOLSER        Volume serial identifier
  26  1A  Unsigned      1  MTRPAG_RDCPCYL         Number of pages per
                                                  cylinder. Not applicable for
                                                  FBA devices. See MTRPAG_FBA
  27  1B  Bitstring     1  MTRPAG_CALFLAGS        Flag byte
          1... ....        MTRPAG_FBA              When on, this device is a
                                                  FBA (Fixed Block Access)
                                                  DASD.
          .1.. ....        *
          ..1. ....        *
          ...1 ....        *
          .... 1...        *
          .... .1..        *
          .... ..1.        *
          .... ...1        *
  28  1C  Character     4  MTRPAG_CALTYPE         'PAGE' = paging space,
                                                  'SPOL' = spooling space
  32  20  Unsigned      4  MTRPAG_CALCYLNO        Deprecated: Use
                                                  MTRPAG_CALCYLNOG. Space
                                                  allocation. Number of
                                                  cylinders for a non-FBA DASD,
                                                  or number of pages for a FBA
                                                  DASD. If the value is too
                                                  large to fit in this 32-bit
                                                  field, then set to
                                                  x'FFFFFFFF'. See MTRPAG_FBA.
  36  24  Unsigned      4  MTRPAG_CALSTART        Deprecated: Use
                                                  MTRPAG_CALSTARTG. Start of
                                                  the paging or spooling area.
                                                  A cylinder number for a
                                                  non-FBA DASD, or a page
                                                  number for a FBA DASD. If the
                                                  value is too large to fit in
                                                  this 32-bit field, then set
                                                  to x'FFFFFFFF'. See
                                                  MTRPAG_FBA.
  40  28  Unsigned      4  MTRPAG_RDEVSID         Host subchannel id
  44  2C  Unsigned      2  MTRPAG_RDEVDEV         Device number
  46  2E  Unsigned      2  *                      Reserved and available for
                                                  for IBM use
  48  30  Unsigned      8  MTRPAG_CALCYLNOG       Space allocation. Number of
                                                  cylinders for a non-FBA DASD
                                                  or number of pages for a FBA
                                                  DASD. See MTRPAG_FBA.
  48  30  Unsigned      4  MTRPAG_CALCYLNOG_HI
  52  34  Unsigned      4  MTRPAG_CALCYLNOG_LO
  56  38  Unsigned      8  MTRPAG_CALSTARTG       Start of the paging or
                                                  spooling area. A cylinder
                                                  number for a non-FBA DASD, or
                                                  a page number for a FBA DASD.
                                                  See MTRPAG_FBA.
  56  38  Unsigned      4  MTRPAG_CALSTARTG_HI
  60  3C  Unsigned      4  MTRPAG_CALSTARTG_LO
  64  40  Character     0  MTRPAG_END

MRMTRPAG 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
MTRPAG                     0     64
MTRPAG_CALCYLNO           20      4
MTRPAG_CALCYLNOG          30      8
MTRPAG_CALCYLNOG_HI       30      4
MTRPAG_CALCYLNOG_LO       34      4
MTRPAG_CALFLAGS           1B      1
MTRPAG_CALSTART           24      4
MTRPAG_CALSTARTG          38      8
MTRPAG_CALSTARTG_HI       38      4
MTRPAG_CALSTARTG_LO       3C      4
MTRPAG_CALTYPE            1C      4
MTRPAG_CPVOLSER           14      6
MTRPAG_END                40      0
MTRPAG_FBA                1B           80
MTRPAG_MRHDR               0      0
MTRPAG_RDCPCYL            1A      1
MTRPAG_RDEVDEV            2C      2
MTRPAG_RDEVSID            28      4

This information is
based on z/VM V7R4.0.

Last updated on 10 September 2024 at 19:57:05.

Copyright IBM Corporation, 1990, 2024