HP StorageWorks Clustered Gateway (server/software bundle) CGW361 upgradekit upgrade guide (AG515-96017, September 2008)

Upgrade filesyst
ems for 8.3 SFN support, if needed
By default, PSF
S
filesystems do not support the creation of 8.3 short file names (SFN) and name tunneling.
Filesystems sh
ould
be upgraded only if you have a specific need for these features, as the use of 8.3 files
causes degrada
tion in filesystem performance. The d egradation is proportional to the number of 8.3
files created.
If
8.3 SFN support is later disabled but 8.3 filenames exist, the performance degradation
will continue.
The filesystem is upgraded with the psfscheck comma nd, which enables the feature internally in the
filesystem. Consequently, a brief, cluster-wide outage of the filesystem is required during the upgrade.
Use the following procedure to enable these features on a specificPSFS filesystem. (8.3 support and
ADS support c
an be
enabled at the same time by including -e enableads on the psfscheck
command
line, below.)
1. Stop all applications using the filesystem.
2. Run the following command at the Command Prompt (the command is shown on two lines
for readability ):
%SystemDri
ve%\Program Files\MatrixServer\bin\psfscheck -e
enable8dot3 <device>
The device can be specified in several ways:
•By the driv
eletter, such as X:
• By the mount point (junction), such as C:\san\vol2
• By the psd or psv name, such as psd2p2 or psv3
3. Restart th
eapplicationsthatuse the filesystem.
Using the extended character set in 8.3 file names c an be allowed or disallowed cluster-wide. (By default,
it is
disallowed.) Use the following commands to allow or disallow the use of the extended character set.
Before running the commands, b e sure that the volume is not in use.
psfscheck -e allowextchar
psfschec
k
-e disallowextchar
You can combine options in a single command. For example, you can specify ADS support, 8 .3 support,
and the extended character set:
psfschec
k
-e enableads -e enable8dot3 -e allowextchar <device>
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