Open System Services Management and Operations Guide (G06.25+, H06.03+)

Managing Filesets
Open System Services Management and Operations Guide—527191-002
5-16
Changing OSS File Caching for the Disks of a
Fileset
Changing the OSS File System Mount Point
Changing the mount point can affect the behavior of programs that use OSS files,
particularly programs that use the symbolic-link feature. You should notify users well in
advance of changing an existing mount point.
Changing OSS File Caching for the Disks of a Fileset
You should decide whether to use OSS file caching when you first configure a fileset,
because changing the use of OSS file caching requires you to stop the fileset. For
more information about OSS file caching, see OSS File-System Components on
page 1-9 and OSS File Caching Overview on page 5-17.
If you want to enable OSS file caching initially for all disk volumes that contain OSS
files, you need do nothing. OSS file caching is enabled by default when disk volumes
are configured.
If you disable OSS file caching, HP strongly recommends that you disable OSS file
caching on all the disk volumes in a fileset. To disable OSS file caching for a specific
disk volume, you must disable all filesets mounted on the affected fileset:
1. At a TACL prompt, enter:
SCF
2. At the SCF prompt, enter the following SCF command to stop each fileset involved:
STOP FILESET $ZPMON.filesetname
Enter this command beginning with the last fileset mounted on the affected fileset.
Stop the filesets in the reverse order in which they were last started. Stop the
affected fileset last. If the root fileset is the affected fileset, you can enter:
STOP FILESET $ZPMON.*
This command will stop all filesets in the correct order.
3. At an SCF prompt, enter the following set of commands once for each disk volume
in the fileset:
ALTER DISK diskname, OSSCACHING OFF
diskname
4. Restart the affected portion of the OSS file system by entering the following SCF
command one or more times:
START FILESET $ZPMON.filesetname
filesetname
is the name of each fileset that you previously stopped, specified in the order in
which mount points occur.