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Programming Interface Information:
The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM. |
MRSTOATC
PrologControl Block Contents
Cross Reference
MRSTOATC Prolog
DSECT NAME - STOATC
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor Control Area
REFERENCED CONTROL BLOCKS -
MRRECHDR Monitor Record Header
NAME - MRSTOATC
DESCRIPTIVE NAME - Monitor Event Record
Domain 3 - Storage Domain
Record 7 - Page/Spool Area of a CP Volume
DESCRIPTION - Describes a paging or spooling area in a CP volume
that had just been attached. A separate record is
generated for each paging area and each spooling area
on the volume.
NOTES:
- The CP volume, as a device, is described in MRIODATD (Domain 6,
Record 5). MRSTOATC describes the storage area on it.
MRSTOATC Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 52 STOATC Start of monitor record
0 0 Character 0 STOATC_MRHDR Record header. See MRRECHDR
for details.
0 0 Character 20 MRHDR
0 0 Unsigned 2 MRHDRLEN record length in bytes
2 2 Unsigned 2 MRHDRZER field of zeros
4 4 Unsigned 1 MRHDRDM domain identifier
5 5 Unsigned 1 *
6 6 Unsigned 2 MRHDRRC record identifier
8 8 Character 8 MRHDRTOD Time at which this record was
built. In time-of-day (TOD)
clock format. See IBM System
370 XA Principle of Operation
for explanation of format.
16 10 Character 4 *
20 14 Character 0 MRHDR_END End of header
20 14 Character 6 STOATC_CPVOLSER Volume serial identifier
26 1A Character 1 * Reserved for IBM use
27 1B Bitstring 1 STOATC_CALFLAGS Flag byte
1... .... STOATC_FBA When on, this device is a FBA
(Fixed Block Access) DASD.
.1.. .... *
..1. .... *
...1 .... *
.... 1... *
.... .1.. *
.... ..1. *
.... ...1 *
28 1C Character 4 STOATC_CALTYPE 'PAGE' = paging space. 'SPOL'
= spooling space.
32 20 Signed 4 STOATC_CALCYLNO Space allocation. Number of
cylinders for a non-FBA DASD,
or number of pages for a FBA
DASD. See STOATC_FBA
36 24 Signed 4 STOATC_CALSTART Start of the paging or
spooling area. A cylinder
number for a non-FBA DASD, or a
page number for a FBA DASD. See
STOATC_FBA
40 28 Signed 4 STOATC_RDCPCYL Number of pages per cylinder.
Not applicable for FBA devices.
See STOATC_FBA
44 2C Unsigned 4 STOATC_RDEVSID Host subchannel id
48 30 Unsigned 2 STOATC_RDEVDEV Device number
50 32 Unsigned 2 * Reserved and available for
IBM use.
52 34 Character 0 STOATC_END
MRSTOATC Cross Reference
Hex Hex
Name Offset Length Value
MRHDR 0 20
MRHDR_END 14 0
MRHDRDM 4 1
MRHDRLEN 0 2
MRHDRRC 6 2
MRHDRTOD 8 8
MRHDRZER 2 2
STOATC 0 52
STOATC_CALCYLNO 20 4
STOATC_CALFLAGS 1B 1
STOATC_CALSTART 24 4
STOATC_CALTYPE 1C 4
STOATC_CPVOLSER 14 6
STOATC_END 34 0
STOATC_FBA 1B 80
STOATC_MRHDR 0 0
STOATC_RDCPCYL 28 4
STOATC_RDEVDEV 30 2
STOATC_RDEVSID 2C 4
This information is
based on z/VM V5R2.0.
Last updated on 11 Dec 2005 at 18:48:12.
Copyright IBM Corporation, 1990, 2005