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How-to: Dump all disks on a z/OS system

I've been learning about z/OS and MVS over the last couple of weeks using the Master the Mainframe course and also the highly affordable courses from Interskill. I wanted to build something proper so I built a thing that can backup a full z/OS system to CCKD files (same as what Hercules/Hyperion uses). With the fixes for 64-bit CCKD to Hyperion now merged, and the 64-bit cckddump tooling appears to be in progress, this might come in handy for some folks.

This is the CCKDALL JCL:
//CCKDALL   JOB 1,NOTIFY=&SYSUID
//DUMPJCL   SET DUMPJCL=&&SYSUID..JCL(CCKDDUMP)
//DASDS     EXEC PGM=SDSF
//ISFOUT    DD SYSOUT=*
//CMDOUT    DD DSN=&&SDSF,DISP=(NEW,PASS,DELETE),SPACE=(CYL,1),
//             RECFM=FB,LRECL=100
//ISFIN     DD *
  SET CONSOLE BATCH
  SET DELAY 2
  /D U,DASD,,,9999
  PRINT FILE CMDOUT
  ULOG
  PRINT
  PRINT CLOSE
//*
//FMT      EXEC PGM=ICETOOL
//TOOLMSG  DD
//DFSMSG   DD SYSOUT=*
//IN       DD DSN=&&SDSF,DISP=(OLD,DELETE,DELETE)
//OUT      DD DSN=&&SORTED,DISP=(NEW,PASS,DELETE),SPACE=(CYL,1),
//            RECFM=FB,LRECL=11
//SYMNAMES DD *
ADDR,44,4,CH
TYPE,49,4,CH
STATUS,54,5,CH
VOLID,68,6,CH
//TOOLIN   DD *
  SUBSET FROM(IN) TO(OUT) INPUT REMOVE HEADER(5) TRAILER USING(CTL1)
//CTL1CNTL DD *
  SORT FIELDS=(VOLID,A)
  OUTFIL OMIT=(VOLID,EQ,C'      '),BUILD=(ADDR,C' ',VOLID)
//*
//SKELLIB  EXEC PGM=IEFBR14
//SKELLIB  DD DSN=&&SKELLIB,DISP=(NEW,PASS,DELETE),
//            DCB=(LRECL=80,RECFM=FB),SPACE=(80,(100,0,1),RLSE)
//*
//SKELCOPY EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSIN    DD DUMMY
//SYSUT2   DD DSN=&&SKELLIB(SKEL),DISP=(MOD,PASS,KEEP)
//SYSUT1   DD DSN=&DUMPJCL,DISP=SHR
//*
//REXXLIB  EXEC PGM=IEFBR14
//REXXLIB  DD DSN=&&REXXLIB,DISP=(NEW,PASS,DELETE),
//            DCB=(LRECL=80,RECFM=FB),SPACE=(80,(100,0,1),RLSE)
//*
//REXXCOPY EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSIN    DD DUMMY
//SYSUT2   DD DSN=&&REXXLIB(RXPGM),DISP=(MOD,PASS,KEEP)
//SYSUT1   DD *
  /* REXX */
  TRACE I
  SIGNAL ON ERROR
  "EXECIO * DISKR DASDLST (FINIS"
  DO WHILE(QUEUED() > 0)
    PARSE PULL ADDR VOLID
    IF VOLID = "DATAZ1" THEN ITERATE
    JOBID = "[email protected]" || VOLID
    SAY "ADDRESS: '" || ADDR || "', VOLID: '" || VOLID || "'"
    ADDRESS ISPEXEC "FTOPEN TEMP"
    ADDRESS ISPEXEC "FTINCL SKEL"
    ADDRESS ISPEXEC "FTCLOSE"
    ADDRESS ISPEXEC "VGET ZTEMPF"
    ADDRESS TSO "SUBMIT '"ZTEMPF"'"
  END
  EXIT 0
  ERROR:
    /* UPDATE ISPF ERROR CODE AS WELL */
    ZISPFRC = 8
    ADDRESS ISPEXEC "VPUT ZISPFRC SHARED"
    EXIT 8
//*
//BUILD    EXEC PGM=IKJEFT1A,PARM='ISPSTART CMD(RXPGM)'
//SYSPROC  DD DSN=&&REXXLIB,DISP=(SHR,DELETE,DELETE)
//ISPPROF  DD DISP=(NEW,PASS),DSN=&&ISPPROF,
//            SPACE=(CYL,(2,0,44)),
//            DCB=(RECFM=FB,LRECL=80)
//ISPPLIB  DD DISP=SHR,DSN=ISP.SISPPENU
//ISPMLIB  DD DISP=SHR,DSN=ISP.SISPMENU
//ISPSLIB  DD DISP=(SHR,DELETE,DELETE),DSN=&&SKELLIB
//ISPTLIB  DD DISP=SHR,DSN=ISP.SISPTENU
//SYSPRINT DD SYSOUT=*
//SYSTSPRT DD SYSOUT=*
//ISPLOG   DD SYSOUT=*,
//            DCB=(LRECL=125,BLKSIZE=129,RECFM=VA)
//SYSTSIN  DD DUMMY
//DASDLST  DD DSN=&&SORTED,DISP=(MOD,DELETE,DELETE)
You also need the CCKDDUMP JCL, which is here:
//&JOBID  JOB 1,NOTIFY=&&SYSUID
//DUMP   EXEC PGM=CCKDDUMP
//STEPLIB  DD DISP=SHR,DSN=&&SYSUID..CCKD.LOAD
//SYSPRINT DD SYSOUT=*,RECFM=VB,LRECL=255,BLKSIZE=4096
//SYSUT1   DD DISP=OLD,UNIT=SYSDA,VOL=SER=&VOLID
//SYSUT2   DD DISP=(,CATLG),DSN=&&SYSUID..&VOLID..CCKD,
//             UNIT=SYSDA,SPACE=(TRK,(65535,),RLSE),
//             LRECL=16384,BLKSIZE=16384,RECFM=F
//*
Make sure to update the references to DATAZ1 if you're dumping somewhere else, and also the DUMPJCL variable in the first JCL to wherever you saved the CCKDDUMP JCL.

Happy dumping!

Comments

  1. Great! However, it seems there seem to be still no solution, so one cannot really dump, for example, a 150000 track sysres?

    ReplyDelete
    Replies
    1. Hi! CCKDUMP compresses, so the limit is actually that the compressed output cannot be above a certain size. If that limit is hit, then you can always move part of the volume away and dump the volume, and then re-assemble it manually.

      Delete
    2. Nice article but I’m curious how you restore the dump after it’s preformed. Do you need the starter system to do that? If so where can I find it?

      Delete

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