Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
MPEBK
Control Block Contents
MPEBK DSECT
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. RELOCATION CONSIDERATIONS : None 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 (6) Minidisk pool spin lock. 00000040 MPELEN *-MPEBK MPEBK size in bytes 00000008 MPESIZE (((*-MPEBK)+7)/8) MPEBK size in doublewords
MPEBK Storage Layout
*** MPEBK - Minidisk pool extent block. * * +---------------------------+---------------------------+ * 0 | MPECTEXT |///////////////////////////| * +---------------------------+---------------------------+ * 8 | MPEDX1CT | MPEDX1BK | * +---------------------------+---------------------------+ * 10 | | * = MPESPLCK = * | | * +-------------------------------------------------------+ * 40 * *** MPEBK - Minidisk pool extent block.
MPEBK Cross Reference
Symbol Dspl Value -------------- ---- ----- MPECTEXT 0000 MPEDX1BK 000C MPEDX1CT 0008 MPEDX1DA 0008 MPELEN 0010 00000040 MPESIZE 0010 00000008 MPESPLCK 0010
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