SMF Type 19 Record
This table shows the record layout for type 19 SMF records
It's easy to report on SMF 19 data!
Spectrum SMF Writer handles the difficult SMF record parsing for you automatically. You just specify which fields you want to see.
Spectrum SMF Writer also converts the arcane date and time fields and reformats them into an attractive report.
Record length. This field and the next field (total of four bytes) form the RDW (record descriptor word). See “Standard SMF Record Header” on page 13-1 for a detailed description.
Segment descriptor (see record length field).
System indicator: Bit Meaning When Set 0-2 Reserved 3-6 Version indicators* 7 Reserved.*See “Standard SMF Record Header” on page 13-1 for a detailed description.
Record type 19 (X'13').
Time since midnight, in hundredths of a second, when the record was moved into the SMF buffer.
Date when the record was moved into the SMF buffer, in the form 0cyydddF. See “Standard SMF Record Header” on page 13-1 for a detailed description.
System identification (from the SID parameter).
Volume serial number.
Owner identification from the VTOC.
Volume table of contents (VTOC) address (format of CCHHR).
Volume table of contents (VTOC) indicator Bit Meaning When Set 0 Format 5 data set control blocks (DSCB) missing or erroneous 1-2 Reserved 3 VTOC does not begin on record 1 4 Accurate Format 5 and 6 data set control blocks (DSCB); bit 0 set to zero 5 Possible VTOC or VTOC index error 6 VTOC error has been fixed; bit 5 set to zero 7 Indexed VTOC.
Number of data set control blocks (DSCB) calculated as: number of DSCBs per track times number of tracks in VTOC.
Number of data set control blocks (DSCB) — format 0 DSCBs, that is, number of available DSCBs.
Number of unused alternate tracks.
Number of unallocated cylinders. 54 36 2 binary Number of unallocated tracks.
Number of cylinders in the largest unallocated extent. 58 3A 2 binary Number of tracks in the largest unallocated extent.
Number of unallocated extents.
Module identification or drive number indicating physical identity of devices having moveable address plugs. This field is taken from bits 2-7 of sense byte 4 for these devices. (See the component descriptions of these devices for the meaning of sense byte 4.)
The table above is based on the description provided by IBM in its "MVS Systems Management Facilities (SMF)" manual.