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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 68 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 2 2 Unsigned 2 MRHDRZER 4 4 Unsigned 1 MRHDRDM 5 5 Unsigned 1 * 6 6 Unsigned 2 MRHDRRC 8 8 Character 8 MRHDRTOD 16 10 Character 4 * 20 14 Character 0 MRHDR_END 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 Unsigned 4 STOATC_CALCYLNO Deprecated: Use STOATC_CALCYLNOG. Space allocation. Number of cylinders for a non-FBA DASD, or number of pages for a FBA DASD. If the value is too large to fit in this 32-bit field, then set to x'FFFFFFFF'. See STOATC_FBA. 36 24 Unsigned 4 STOATC_CALSTART Deprecated: Use 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. If the value is too large to fit in this 32-bit field, then set to x'FFFFFFFF'. 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 Unsigned 8 STOATC_CALCYLNOG Space allocation. Number of cylinders for a non-FBA DASD, or number of pages for a FBA DASD. See STOATC_FBA. 52 34 Unsigned 4 STOATC_CALCYLNOG_HI 56 38 Unsigned 4 STOATC_CALCYLNOG_LO 60 3C Unsigned 8 STOATC_CALSTARTG 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. 60 3C Unsigned 4 STOATC_CALSTARTG_HI 64 40 Unsigned 4 STOATC_CALSTARTG_LO 68 44 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 68
STOATC_CALCYLNO 20 4
STOATC_CALCYLNOG 34 8
STOATC_CALCYLNOG_HI 34 4
STOATC_CALCYLNOG_LO 38 4
STOATC_CALFLAGS 1B 1
STOATC_CALSTART 24 4
STOATC_CALSTARTG 3C 8
STOATC_CALSTARTG_HI 3C 4
STOATC_CALSTARTG_LO 40 4
STOATC_CALTYPE 1C 4
STOATC_CPVOLSER 14 6
STOATC_END 44 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 V7R3.0.
Last updated on 09 September 2022 at 13:17:05.
Copyright IBM Corporation, 1990, 2022