LCS tape write and read request (subtypes 78

Table 1 describes the format of the subtype data section for the following OAM SMF record subtypes:

78: LCS tape write request
79: LCS tape read request
88: LCS object tape logical delete request

Table 1. Format of subtype data section for subtypes 78–79
Offsets	Name	Length	Format	Description
0 0	ST78ORMN	16	EBCDIC	OAM request member name. Valid for subtype 79 only.
16 10	ST78OTMN	16	EBCDIC	OAM target member name. Valid for subtype 79 only.
32 20	ST78TDUN	8	EBCDIC	Tape drive unit name.
40 28	ST78TDDN	4	EBCDIC	MVS device number of the tape drive.
44 2C	ST78TVT	1	EBCDIC	OAM tape volume type. Value Meaning B Tape volume is a backup volume belonging to an OBJECT BACKUP storage group. G Tape volume is a grouped volume belonging to an OBJECT storage group.
45 2D	*	3	binary	Reserved.
48 30	ST78SGN	8	EBCDIC	Name of the OBJECT or OBJECT BACKUP storage group to which the tape volume belongs.
56 38	ST78LIQT	4	binary	LCS input-work-queue time. The amount of time in milliseconds this request has spent on the LCS input-work-queue waiting to be processed. For subtype 88, this field contains binary zeros.
60 3C	ST78LDQT	4	binary	LCS dispatcher-queue time. The amount of time in milliseconds this request has spent on the LCS dispatcher-queue waiting to be processed. For subtype 88, this field contains binary zeros.
64 40	ST78LEQT	4	binary	LCS execution-queue time. The amount of time in milliseconds that this request has spent on the LCS execution-queue being processed. For subtype 88, this field contains binary zeros.
68 44	ST78LXQT	4	binary	XCF cross system processing-queue time. The amount of time in milliseconds that this request has spent being processed on the XCF cross system queue. For subtypes 78 and 88, this field contains binary zeros.
72 48	ST78LMAT	4	binary	MVS dynamic allocation time. This is the amount of time in milliseconds that was required by MVS dynamic allocation (SVC 99) to dynamically allocate the tape drive. For subtypes 78 and 79, this field is valid only if bit 1 in field ST78FLGS is on. For subtype 88, this field contains binary zeros.
76 4C	ST78LMDT	4	binary	MVS dynamic deallocation time. This is the amount of time in milliseconds that was required by MVS dynamic deallocation (SVC99) to dynamically deallocate the tape drive. For subtypes 78 and 79, this field is valid only if bit 2 in field ST78FLGS is on. For subtype 88, this field contains binary zeros.
80 50	ST78LDCT	4	binary	DFP CLOSE time. This is the amount of time in milliseconds that was required by DFP CLOSE processing to close an already-opened tape data set. For subtypes 78 and 79, this field is valid only if bit 2 in field ST78FLGS is on. For subtype 88, this field contains binary zeros.
84 54	ST78LDOT	4	binary	DFP OPEN time. This is the amount of time in milliseconds that was required by DFP OPEN processing to open the tape data set. For subtypes 78 and 79, this field is valid only if bit 1 or 2 in field ST78FLGS is on. For subtype 88, this field contains binary zeros.
88 58	ST78LDPT	4	binary	DFP POINT time. This is the amount of time in milliseconds that was required by DFP POINT processing to position to the correct block-ID on the tape media. For subtype 88, this field contains binary zeros.
92 5C	ST78LBRT	4	binary	BSAM READ time. This is the amount of time in milliseconds that OAM spent in BSAM READ processing reading data from the tape volume. Valid for subtype 79.
96 60	ST78LBWT	4	binary	BSAM WRITE time. This is the amount of time in milliseconds that OAM spent in BSAM WRITE processing writing data to the tape volume. Valid for subtype 78.
100 64	ST78LBCT	4	binary	BSAM CHECK time. This is the amount of time in milliseconds that OAM spent in BSAM CHECK processing waiting for I/O operations to the tape volume to complete. Valid for subtype 78 and 79.
104 68	ST78FLGS	4	binary	Processing flags. For subtype 88, this field contains binary zeros. Bit Meaning 0 This request was processed using a mounted tape volume and did not require an unmounted tape volume to be mounted. 1 This request required an unmounted tape volume to be mounted and the tape drive that was used to process this request was empty at the start of processing this request. Therefore, this request did not require a mounted tape volume to be demounted prior to mounting the required tape volume. 2 This request required an unmounted tape volume to be mounted and the tape drive that was used to process this request was full at the start of processing this request. Therefore, this request required a mounted tape volume to be demounted prior to mounting the required tape volume. 3 This request was processed using a tape drive inside an automated tape library dataserver. 4 This request was processed using a tape volume associated with TAPE SUBLEVEL 1. 5 This request was processed using a tape volume associated with TAPE SUBLEVEL 2. 6–31 Reserved.
108 6C	ST78NOBJ	4	binary	Total number of objects in this request. The maximum value for this field is 280. With 280 object entries in this record, the maximum SMF record size for subtype 78 is 32 744 bytes.
112 70	ST78NKBP	4	binary	Total number of kilobytes of object data in this request.
116 74	ST78SOBJ	4	binary	Total number of objects in this request that processed successfully.
120 78	ST78SKBP	4	binary	Total number of kilobytes of object data in this request that processed successfully.
124 7C	*	16	binary	Reserved.
Note: The following fields (comprising 116 bytes) are repeated for each object in the chained request, that is for the number of objects specified in the ST78NOBJ field. The maximum number of times that the following fields will be repeated is 280. With 280 object entries, the maximum SMF record size for subtype 78 is 32 744 bytes.
140 8C	ST78COLN	44	EBCDIC	Collection name.
184 B8	ST78OBJN	44	EBCDIC	Object name.
228 E4	ST78OLEN	4	binary	Object length.
232 E8	ST78OOFF	4	binary	Object offset. Valid for a subtype 79 partial object read.
236 EC	ST78VSN	6	EBCDIC	Volume serial number.
242 F2	ST78TMT	2	EBCDIC	Tape media type: Value Meaning 02 IBM 3480 Cartridge System Tape. 04 IBM 3480 Enhanced Capacity Cartridge System Tape. 05 IBM High Performance Cartridge Tape. 06 IBM Extended High Performance Cartridge Tape. 07 IBM Enterprise Tape Cartridge. 08 IBM Enterprise WORM Tape Cartridge. 09 IBM Enterprise Economy Tape Cartridge. 10 IBM Enterprise Economy WORM Tape Cartridge. 12 IBM Enterprise Extended Tape Cartridge. 14 IBM Enterprise Extended WORM Tape Cartridge.
244 F4	ST78OTKN	4	binary	Object volume location token.
248 F8	ST78RC	4	binary	LCS return code.
252 FC	ST78RS	4	binary	LCS reason code.