HP-UX 11i Version 2 Release Notes (October 2003)

Disk and File Management
VERITAS File System (VxFS) 3.5
Chapter 5
118
• New VxFS Directory Name Lookup Cache (DNLC) - The new DNLC caches
filenames less than or equal to 32 characters instead of 39 characters as in VxFS 3.3.
• New VxFS Buffer Cache for Meta-data only - The new VxFS buffer cache can be
tuned with vx_bc_bufhw global tunable.
• VxFS supports file systems up to 4 terabytes in size.
• Version 5 enables the creation of file system sizes up to 4 terabytes. Files can be a
maximum of 2 TB.
1
File systems larger than 2 TB must be created on a VERITAS
Volume Manager volume. Version 5 also enables setting up to 1024 access control list
(ACL) entries.
Machines Affected or No Longer Supported
This release is the last to support the VxFS Version 2 and Version 3 disk layouts. You can
still mount these older disk layout versions, but you cannot create them using the
VERITAS mkfs command.
Impact
There are no impacts.
Compatibility
For a compatibility issue related to the support of larger file systems, see “Usage of
ustat(), statfs(), and statvfs()” on page 199.
Performance
A hang issue has been observed on workstations and low-end memory systems, which
can be avoided by re-setting the default tunable values. For further information, see the
HP-UX 11i v2 Installation and Update Guide.
Documentation
For further information, see the following documentation:
•Manpages:
This release includes the manpages as part of the VERITAS File System 3.5 (HP
Online JFS/JFS 3.5) product.
• User Manuals:
The VERITAS File System 3.5 (HP Online JFS/JFS 3.5) Administrator's Guide has
been updated. Refer to http://www.docs.hp.com for more information.
Obsolescence
•The vx_fancy_readahead tunable is obsolete and has been replaced by the file
system tunable read_ahead. Additionally, the following tunables are obsolete:
— vx_ncsize
1. See also “Swap Space Adjustment for Large Memory-Mapped Files” on page 116.