VERITAS File System 4.1 Administrator's Guide

Quick I/O for Databases
Use Restrictions
Chapter 11 165
Use Restrictions
• The name xxx::cdev:vxfs: is recognized as a special name by VxFS only when:
— VxFS with Quick I/O has a valid license
— the regular file xxx is physically present on the VxFS file system
— there is no regular file named xxx::cdev:vxfs: on the system
• If the file xxx is being used for memory mapped I/O, it cannot be accessed as a Quick I/O
file.
• An I/O fails if the file xxx has a logical hole and the I/O is done to that hole on
xxx::cdev:vxfs:.
• The size of the file cannot be extended by writes through the Quick I/O interface.