Open System Services Management and Operations Guide (G06.30+, H06.08+, J06.03+)

The ZOSSFSET File
The ZOSSFSET file is an Enscribe alternate-key file that contains the fileset configuration database.
The ZOSSFSET file contains entries that identify the storage-pool file and operating characteristics
for each fileset in the OSS file system. Entries in this file can be displayed with the SCF INFO
FILESET command.This file must be maintained by the system manager using the SCF ADD FILESET,
ALTER FILESET, DELETE FILESET, or RENAME FILESET command. It must be present before the root
fileset is first mounted.
Entries in the ZOSSFSET file must follow these rules:
• The name of a fileset:
Can consist of 1 to 32 uppercase letters and digits (A through Z and 0 through 9). The
first character must be a letter.
◦
◦ Must be unique.
• The ZOSSFSET file must contain an entry for the root fileset.
An entry for the root fileset is automatically created in the ZOSSFSET file.
• The device label of a fileset is a six-character value in the range 000000 through 0ZZZZZ.
The characters can be 0 through 9 and A through Z (but not E, I, O, or U).
• Fileset catalog volumes:
Cannot be on optical disks.◦
◦ Cannot be on disks administered through the NonStop Storage Management Foundation
(SMF).
◦ Should not be on the $SYSTEM disk, to avoid file security conflicts.
• The pathname of the OSS file-system directory that the fileset is mounted on:
Must be the pathname of a directory that exists.◦
◦ Is case-sensitive and must start with /.
◦ Cannot begin with /G or/E.
◦ Should be secured as “drwxrwxrwx” (0777, recommended for / and /home) or
“drwxrwxrwt” (1777, recommended for /tmp) in the OSS environment.
The root fileset mount-point directory must be /. The mount point of the root fileset cannot
be changed.
• The only valid name for the OSS name server of the root fileset is #ZPNS. The root fileset
name cannot be changed.
• When the BUFFERED CREATE (fast-create) attribute is set for a fileset:
The fileset cannot use more than one volume.◦
◦ The fileset catalog must reside on that volume.
◦ The storage-pool file specification is ignored and the storage pool used for file creation
(the creation pool) is the catalog disk volume.
The BUFFERED CREATE attribute controls buffering of new file labels by the disk process.
When this attribute is set, the labels for new files created on this fileset are kept in memory
until the disk process has no other work to perform; then the labels are written to disk.
When this attribute is not set, labels are written to disk immediately.
Configuration Files 101