HP JFS 3.3 and HP OnLineJFS 3.3 VERITAS File System 3.3 System Administrator's Guide

Chapter 1 39
The VxFS File System
Support for Large Files
Support for Large Files
VxFS can, theoretically, support files up to two terabytes in size because
file system structures are no longer in fixed locations (see Chapter 2 ,
“Disk Layout”). The maximum size tested and supported on HP-UX 11.x
systems is one terabyte. Large files are files larger than two gigabytes in
size.
NOTE Be careful when enabling large file capability. Applications and utilities
such as backup may experience problems if they are not aware of large
files.
Creating a File System with Large Files
You can create a file system with large file capability by entering the
following command:
# mkfs -F vxfs -o largefiles special_device size
Specifying largefiles sets the largefiles flag, which allows the file
system to hold files up to one terabyte in size. Conversely, the default
nolargefiles option clears the flag and limits files being created to a
size of two gigabytes or less:
# mkfs -F vxfs -o nolargefiles special_device size
NOTE The largefiles flag is persistent and stored on disk.
Mounting a File System with Large Files
If a mount succeeds and nolargefiles is specified, the file system
cannot contain or create any large files. If a mount succeeds and
largefiles is specified, the file system may contain and create large
files.
The mount command fails if the specified largefiles|nolargefiles
option does not match the on-disk flag.