5. FILES › 5.5 USS File System Information Area File › 5.5.1 USS Directory Entry File (HFSDIR)

5.5.1 USS Directory Entry File (HFSDIR)

FILENAME=HFSDIR

The USS Directory Entry File describes the attributes,
allocation, and current status for each directory in the file
system file.

This file is derived from data collected by the USS File
Systems Collector.  One observation is built for each
directory entry in a file system selected for processing.

Sources of data for the observations in this file are as
follows:

o  The format-1 DSCB in the VTOC provides the data set name
   and most of the attributes of the data set.

o  The SMS cells in the VVDS provide the SMS class name
   values for DATACLAS, STORCLAS, and MGMTCLAS constructs if
   the data set is SMS-managed.

o  The storage group name is obtained by VCC from the SMS
   address space if available.

The HFSDIR file contains observations for directory entries
of file system.  Each directory entry carries associated file
system name (DSNAME).  The file system (subtype 7) records
that contain no value for VOLSER are not kept in the CA MICS
database.  This happens when a file system is scanned that
only lives in virtual storage.  Since this data never resided
on the DASD, its VOLSER value is not assigned.

The DSNAME and DEVTYPE elements in HFSDIR file come from
subtype 7 records of raw input.  The following sections
describe the file's organization, list the data elements
maintained, and provide usage hints.

    1 - HFSDIR File Organization
    2 - HFSDIR Data Elements List
    3 - HFSDIR Usage Considerations
    4 - HFSDIR Retrieval Examples