Programming Interface Information: This information is NOT intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only.

MPEBK

Prolog  

Control Block Contents  

MPEBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

MPEBK Prolog

 NAME       : HCPMPEBK
 DESCRIPTION: Minidisk pool extent block.
 DSECT      : MPEBK
 FUNCTION   : A MPEBK contains all the necessary information
              for mapping of a minidisk pool.
 LOCATED BY : VMDMPEBK  - Contains the pointer to MPEBK.
 CREATED BY : HCPAMD44  When a Diagnose 244 is issued by the user.
 DELETED BY : HCPAMD44  During an identify pool function.
              HCPMSMDP  Delete minidisk-pool operation.
 COMMENTS   :

 

MPEBK Control Block Content


MPEBK DSECT

Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure MPEBK Minidisk pool extent block. 0000 0 Signed 4 MPECTEXT Total count of minidisk extents for this pool. 0004 4 Signed 4 * Reserved for IBM use. The fields contained in MPEDX1DA must be on a doubleword boundary to be accessed concurrently. 0008 8 Dbl-Word 8 MPEDX1DA (0) 0008 8 Signed 4 MPEDX1CT Count of DX1BK entries. 000C 12 Address 4 MPEDX1BK Address of DX1BK block 0010 16 Dbl-Word 8 MPESPLCK (3) Minidisk pool spin lock. 00000028 MPELEN *-MPEBK MPEBK size in bytes 00000005 MPESIZE (((*-MPEBK)+7)/8) MPEBK size in doublewords

 

MPEBK Storage Layout

*** MPEBK - Minidisk pool extent block.
*
*     +---------------------------+---------------------------+
*   0 |         MPECTEXT          |///////////////////////////|
*     +---------------------------+---------------------------+
*   8 |         MPEDX1CT          |         MPEDX1BK          |
*     +---------------------------+---------------------------+
*  10 |                                                       |
*     =                       MPESPLCK                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  28
*
*** MPEBK - Minidisk pool extent block.

 

MPEBK Cross Reference

(contains links to field and bit definitions)
Symbol         Dspl Value
-------------- ---- -----

MPECTEXT 0000

MPEDX1BK 000C

MPEDX1CT 0008

MPEDX1DA 0008

MPELEN 0010 00000028

MPESIZE 0010 00000005

MPESPLCK 0010


This information is based on VM/ESA 2.4.0.
Last updated on 3 Aug 1999 at 12:15:05 EDT.
Copyright IBM Corporation, 1990, 1999