NFS Services Administrator's Guide

Introduction
New Features in CacheFS
Chapter 1 39
New Features in CacheFS
This section discusses the new features that CacheFS supports on
systems running HP-UX 11i v3.
• Cachefspack
The cachefspack command improves CacheFS performance and
allows greater control over the cache contents, because it ensures
that the specified files are always present in the cache.
This command enables you to pre-load specific files and directories in
the cache. The functionality provided by this command is comparable
to the rpages option.
• Supports Large Files and File Systems
CacheFS supports the maximum file and filesystem sizes supported
by the underlying front filesystem in which the cache resides.
CacheFS data structures are 64-bit compliant.
• Enhanced Cache Consistency Checking
Consistency checking on demand, demandconst, is fully
implemented. However, consistency is not checked at file open time.
Mount options can be switched without deleting or rebuilding the
cache.
• New Consistency option
The new consistency option, weakconst, verifies the consistency of
the cache with the NFS client copy of file attributes, and delays
committing the changes to the server. This improves the CacheFS
response time.
• Enhanced Error Messages
Provides enhanced error messages that display the command name.
Error messages are now printed to standard error, instead of
standard output. This makes troubleshooting easier.