Veritas File System 5.0 Release Notes, HP-UX 11i v3, First Edition, May 2008

1 Veritas File System 5.0 Release Notes
This chapter describes the new features, licensing, system requirements, compatibility with
previous releases and known problems with the Veritas File System 5.0 on HP-UX 11i v3.
This chapter addresses the following topics:
• “Product Description”
• “New Features”
• “Tuning VxFS for Performance”
• “System Requirements”
• “Product Licensing”
• “End of Support”
• “Compatibility With Previous Versions of VxFS”
• “Features no Longer Supported”
• “Known Problems And Workarounds”
Product Description
The Veritas File System, or VxFS, is an extent-based, intent logging file system. VxFS is designed
for use in UNIX environments that require high performance and availability, and deal with
large volumes of data.
Currently, the 5.0 version of Symantec products is available on independent media only, but will
later be integrated into the HP-UX 11i v3 Operating Environment, replacing the currently available
4.1 version.
New Features
The following new features are supported with Veritas File System 5.0 on HP-UX 11i v3:
• Support for Large Directories
VxFS 5.0 introduces an alternate indexing mechanism to improve the performance of file
system operations on directories with a large number of entries.
• File Change Log
The VxFS File Change Log (FCL) tracks changes to files and directories in a file system. The
FCL can be used by applications, such as backup products, webcrawlers, search engines,
indexing engines and replication software that typically scan an entire file system searching
for modification since a previous scan. This feature was introduced with the VxFS 4.1 release
on HP-UX 11i v3. FCL is supported only on file systems with Disk Layout Version 6 or
above.
The following new command is associated with the FCL feature:
fcladm : The fcladm command performs online administration functions for the Veritas
File System File Change Log (FCL) feature. This includes operations such as activating,
deactivating, and removing the FCL, specifying the set of events for tracking, saving and
restoring the FCL file for off-host processing. The fcladm command supports creating FCL
of version 3 or 4. See fcladm (1M) manpage, for detailed information.
There are four tunable parameters associated with this feature:
fcl_keeptime Specifies the minimum amount of time in seconds that the VxFS FCL
must keep records in the log.
fcl_maxalloc Specifies the maximum amount of space that can be allocated to the
VxFS FCL.
Product Description 7