MRMTRPAG

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   48  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               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  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  Signed       4  MTRPAG_CALCYLNO        Space allocation. Number of
                                                cylinders for a non-FBA DASD,
                                                or number of pages for a FBA
                                                DASD. See MTRPAG_FBA
 36  24  Signed       4  MTRPAG_CALSTART        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
 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  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     48
MTRPAG_CALCYLNO           20      4
MTRPAG_CALFLAGS           1B      1
MTRPAG_CALSTART           24      4
MTRPAG_CALTYPE            1C      4
MTRPAG_CPVOLSER           14      6
MTRPAG_END                30      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 V5R4.0.

Last updated on 5 Sep 2008 at 09:11:41.

Copyright IBM Corporation, 1990, 2008