SDWBK Back to Index page
 
Prolog 
Control Block Contents 
   SDWBK 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.


  SDWBK Prolog Top of page
  
 NAME       : HCPSDWBK
 DESCRIPTION: Stand-alone dump writer partition record
 DSECT      : SDWBK
 FUNCTION   : The SDWBK describes the contents of the stand-alone dump
              record that is written to the start of each partition.
 LOCATED BY : It is first data record in each partition written to by
              stand-alone dump.
 CREATED BY : Stand-alone dump installer.
 DELETED BY : Not applicable
 REFERENCES : HCPDLJ - part of DUMPLD2
 SERIALIZED : Single-threaded nature of stand-alone dump process
 RELOCATION CONSIDERATIONS : None
 COMPATIBILITY AND MIGRATION CONCERNS : None
 NOTES      : - The SDWBK is a 4K structure.
 
 
  SDWBK Control Block Content Top of page
  




 SDWBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      SDWBK          Stand-alone dump writer partition record
                               | + .1 .+ .2
0000    0 Character   16 SDW_ID         "HCPSDWBK V1.0 "
0010   16 Signed       4 * (6)          Reserved for IBM use
0028   40 Dbl-Word     8 SDW_TOD        Dump started TOD clock
0030   48 Signed       4 SDW_Dev_Index  Index of this device in Dump
                                        Status Table
0034   52 Signed       4 SDW_Dump_Dev   Index during actual dump
0038   56 Dbl-Word     8 SDW_Pages_Out  Number of pages written to this
                                        device
0040   64 Dbl-Word     8 SDW_TOD_Start  TOD when started writing to this
                                        device
0048   72 Dbl-Word     8 SDW_TOD_End    TOD when done writing to this
                                        device
          00000050       SDW_Rsv        *-SDWBK Start of reserved space
0050   80 Character    1 *              Reserved for IBM Use
          00001000       SDWBSIZE       *-SDWBK Size in bytes
 
 
  SDWBK Storage Layout Top of page
  
          
*** SDWBK - Stand-alone dump writer partition record
*
*     +-------------------------------------------------------+
*   0 |                        SDW_ID                         |
*     |                                                       |
*     +-------------------------------------------------------+
*  10 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  28 |                       SDW_TOD                         |
*     +---------------------------+---------------------------+
*  30 |      SDW_DEV_INDEX        |       SDW_DUMP_DEV        |
*     +---------------------------+---------------------------+
*  38 |                    SDW_PAGES_OUT                      |
*     +-------------------------------------------------------+
*  40 |                    SDW_TOD_START                      |
*     +-------------------------------------------------------+
*  48 |                     SDW_TOD_END                       |
*     +------+------------------------------------------------+
*  50 |//////|////////////////////////////////////////////////|
*     +------+////////////////////////////////////////////////|
*  58 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*1000
*
*** SDWBK - Stand-alone dump writer partition record
 
 
  SDWBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
SDW_Dev_Index  0030
SDW_Dump_Dev   0034
SDW_ID         0000
SDW_Pages_Out  0038
SDW_Rsv        0048 00000050
SDW_TOD        0028
SDW_TOD_End    0048
SDW_TOD_Start  0040
SDWBSIZE       0050 00001000
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:55:01 EDT.
Copyright IBM Corporation, 1990, 2022