Veritas File System 5.1 SP1 Release Notes

1 Veritas File System 5.1 SP1 Release Notes
This chapter describes the new features, licensing, system requirements, compatibility with previous
releases and known problems with the Veritas File System (VxFS) 5.1 Service Pack 1 (SP1) which
is supported on systems running HP-UX 11i v3.
This chapter addresses the following topics:
• “Overview” (page 4)
• “New features supported with VxFS 5.1 SP1” (page 4)
• “System Requirements” (page 5)
• “Compatibility With Previous Versions of VxFS” (page 5)
• “Tuning VxFS for Performance” (page 6)
• “Product Licensing” (page 6)
• “Features nearing End of Support” (page 9)
• “Features no Longer Supported” (page 10)
• “Known Limitations” (page 10)
• “Known Problems and Workarounds” (page 10)
Overview
The Veritas File System (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, VxFS 5.1 SP1 is available on independent media only but may later be integrated into
the HP-UX 11i v3 Operating Environment.
New features supported with VxFS 5.1 SP1
The following new features are supported with VxFS 5.1 SP1 on the HP-UX 11i v3 operating system:
NOTE: Starting with VxFS 5.1 SP1, Disk Layout Version (DLV) 8 filesystems is provided.
• Autolog replay on mount
Starting with the VxFS 5.1 SP1 release, when the mount command detects a dirty log in the
file system, it will automatically run the VxFS command fsck to clean up the intent log. This
functionality is only supported on file systems mounted on a Veritas Volume Manager (VxVM)
volume.
• FileSnaps
FileSnaps provide the ability to take snapshots of objects that are smaller in granularity than
a file system or a volume. The ability to capture parts of a file system name space is required
for application-based or user-based management of data stored in a file system. This is useful
when a file system is shared by a set of users or applications or the data is classified into
different levels of importance in the same file system.
This is an Enterprise level feature. It is supported only with DLV 8 filesystems.
• SmartTier sub-file movement
The Dynamic Storage Tiering (DST) feature is now renamed as SmartTier. With the SmartTier
feature, you can now manage the placement of file objects as well as entire files on individual
volumes.
4 Veritas File System 5.1 SP1 Release Notes