PFCRHDR Back to Index page
 
Prolog 
Control Block Contents 
   PFCRHDR DSECT
   PFCRTABL 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.

 
  PFCRHDR Control Block Content Top of page
 

 PFCRHDR DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure PFCRHDR Persistent FlashCopy Relationship Table 0000 0 Character 8 PFCRHDRI Control block eye-catcher 0008 8 Character 24 PFCRLOCK CP LOCK WORD for 2-linked list 0020 32 Address 4 PFCRHEAD Address of 1st PFCRTABL Entry 0024 36 Address 4 PFCRTAIL Address of last PFCRTABL Entry 0028 40 Signed 4 PFCRSEQL Last-Assigned Sequence Number 0030 48 Dbl-Word 8 * (0) 00000030 PFCRHDRB *-PFCRHDR HEADER SIZE IN BYTES 00000006 PFCRHDRZ (PFCRHDRB+7)/8 HEADER SIZE IN DOUBLE-WORDS LOCATED BY : PFCRHEAD/TAIL Double Linked List
 PFCRTABL DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure PFCRTABL Persistent FlashCopy Relationship Table 0000 0 Character 8 PFCRTABI Control block eye-catcher 0008 8 Address 4 PFCRPREV Address of previous entry 000C 12 Address 4 PFCRNEXT Address of next entry 0010 16 Signed 4 PFCRSEQN Persistent FlashCopy Relationship Sequence Number that is stored in the hardware. This is established from the TOD clock bits 0-31 when the relationship is established. 0014 20 Character 10 PFCRDATE 'YYYY-MM-DD' 001E 30 Character 8 PFCRTIME 'HH:MM:SS' 0026 38 Bitstring 1 PFCRFLGS Persistent FlashCopy Flags ..1. .11. PFCRUSED 00080 PFCRFLGS+0,X'80' Entry is in use 0=not-in-use 1=in-use ..1. .11. PFCRTGT 00040 PFCRFLGS+0,X'40' Entry is a TARGET 0=Source 1=Target 0027 39 Bitstring 1 * 0028 40 Character 4 PFCRRDEV_C Underlying Real Device Number 002C 44 Signed 2 PFCRRDEV_X Underlying Real Device Number 002E 46 Character 4 PFCRVDEV_C Virtual device number 0032 50 Signed 2 PFCRVDEV_X Virtual device number when the Persistent FlashCopy Relationship was formed 0034 52 Character 8 PFCRORID Original userid that created the Persistent FlashCopy Relationship 003C 60 Character 8 PFCROWID Userid in z/VM Directory that owned the minidisk when the Persistent FlashCopy Relationship was formed 0048 72 Dbl-Word 8 * (0) 00000048 PFCRTABB *-PFCRTABL SIZE IN BYTES 00000009 PFCRTABZ (PFCRTABB+7)/8 SIZE IN DOUBLE-WORDS
 
 
  PFCRHDR Storage Layout Top of page
 
          
*** PFCRHDR - Persistent FlashCopy Relationship Table
*
*     +-------------------------------------------------------+
*   0 |                       PFCRHDRI                        |
*     +-------------------------------------------------------+
*   8 |                                                       |
*     =                       PFCRLOCK                        =
*     |                                                       |
*     +---------------------------+---------------------------+
*  20 |         PFCRHEAD          |         PFCRTAIL          |
*     +---------------------------+---------------------------+
*  28 |         PFCRSEQL          |///////////////////////////|
*     +---------------------------+---------------------------+
*  30
*
*** PFCRHDR - Persistent FlashCopy Relationship Table
          
*** PFCRTABL - Persistent FlashCopy Relationship Table
*
*     +-------------------------------------------------------+
*   0 |                       PFCRTABI                        |
*     +---------------------------+---------------------------+
*   8 |         PFCRPREV          |         PFCRNEXT          |
*     +---------------------------+---------------------------+
*  10 |         PFCRSEQN          |         PFCRDATE          |
*     +---------------------------+             +-------------+
*     |                                         |   (01E)-    |
*     +-----------------------------------------+------+------+
*  20 |               -PFCRTIME                 |:RFLGS|//////|
*     +---------------------------+-------------+------+------+
*  28 |        PFCRRDEV_C         | PFCRRDEV_X  |PFCRVDEV_C-  |
*     +-------------+-------------+-------------+-------------+
*  30 |   -(02E)    | PFCRVDEV_X  |        PFCRORID-          |
*     +-------------+-------------+---------------------------+
*  38 |          -(034)           |        PFCROWID-          |
*     +---------------------------+---------------------------+
*  40 |          -(03C)           |///////////////////////////|
*     +---------------------------+---------------------------+
*  48
*
*** PFCRTABL - Persistent FlashCopy Relationship Table
 
 
  PFCRHDR Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
PFCRDATE       0014
PFCRFLGS       0026
PFCRHDRB       0030 00000030
PFCRHDRI       0000
PFCRHDRZ       0030 00000006
PFCRHEAD       0020
PFCRLOCK       0008
PFCRNEXT       000C
PFCRORID       0034
PFCROWID       003C
PFCRPREV       0008
PFCRRDEV_C     0028
PFCRRDEV_X     002C
PFCRSEQL       0028
PFCRSEQN       0010
PFCRTABB       0048 00000048
PFCRTABI       0000
PFCRTABZ       0048 00000009
PFCRTAIL       0024
PFCRTGT        0026 26
PFCRTIME       001E
PFCRUSED       0026 26
PFCRVDEV_C     002E
PFCRVDEV_X     0032
 
This information is based on z/VM 6.3.0 Last updated on 22 May 2013 at 13:55:11 EDT.
Copyright IBM Corporation, 1990, 2013