DFMBK Back to Index page
 
Prolog 
Control Block Contents 
   DFMBK DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.


  DFMBK Prolog Top of page
 
 NAME       : HCPDFMBK
 DESCRIPTION: Dump file map record
 DSECT      : DFMBK
 FUNCTION   : Contains the relative record number of each part
              of a dump file, created by Hard ABEND, S/A Dump,
              VMDUMP or Non-Destructive dump.
 LOCATED BY : The DFMBK is always the second record in a dump file.
 CREATED BY : HCPDMP, HCPVDU or HCPSAD
 DELETED BY : Not applicable
 RELOCATION CONSIDERATIONS : None
 COMMENTS   : The DFMBK maps a 4K record that is written
              to a dump file.
 
 
  DFMBK Control Block Content Top of page
 

 DFMBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure DFMBK Dump file map record 0000 0 Character 8 DFMBKID Identification string 0008 8 Signed 4 DFMDFIR Record number of 1st DFIR Page 000C 12 Signed 4 DFMSDXBK Record number of the stand-alone dump index record 0010 16 Signed 4 DFMDALBK Record number of the first access list record 0014 20 Signed 4 DFMDALNO Number of access list records 0018 24 Signed 4 DFMCOUNT Number of address spaces in the SDF, and once processed into a CMS file, this is the number of related dump files that can be created, if all goes well. 0000001C DFMSIZE *-DFMBK Length of fixed portion of the DFMBK 001C 28 Signed 4 DFMASIBK Record number of ASIBK for each dumped address space 00000004 DFMASILN *-DFMASIBK Length of repeatable section DFMMAX defines the maximum number of ASIBKs that one DFMBK can address. 000003F9 DFMMAX (4096-DFMSIZE)/4
 
 
  DFMBK Storage Layout Top of page
 
 
*** DFMBK - Dump file map record
*
*     +-------------------------------------------------------+
*   0 |                       DFMBKID                         |
*     +---------------------------+---------------------------+
*   8 |         DFMDFIR           |         DFMSDXBK          |
*     +---------------------------+---------------------------+
*  10 |         DFMDALBK          |         DFMDALNO          |
*     +---------------------------+---------------------------+
*  18 |         DFMCOUNT          |         DFMASIBK          |
*     +---------------------------+---------------------------+
*  20
*
*** DFMBK - Dump file map record
 
 
  DFMBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
DFMASIBK       001C
DFMASILN       001C 00000004
DFMBKID        0000
DFMCOUNT       0018
DFMDALBK       0010
DFMDALNO       0014
DFMDFIR        0008
DFMMAX         001C 000003F9
DFMSDXBK       000C
DFMSIZE        0018 0000001C
 
This information is based on z/VM 6.4.0 Last updated on 24 Aug 2016 at 09:24:02 EDT.
Copyright IBM Corporation, 1990, 2016