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