vxfs advanced mount options

The Filesystem Manager supports the following mount options for vxfs filesystems:

Mode of Intent Logging

By default, vxfs filesystems log file transactions before they are committed to disk, reducing time spent checking and repairing filesystems after the system is halted unexpectedly. You can configure this behavior as follows:

• Log Mode: log all transactions before the system call returns to the application. This incurs a slight performance penalty while ensuring fast recovery.

• Delayed Mode - allow some system calls to return to the application before being logged. This increases system throughput at the expense of data integrity.

• Temporary Mode - delay almost all transaction logging. This has the highest penalty for data integrity and is intended for use with temporary filesystems.

Clear Blocks Before Allocating File?

clear data extents before being reallocating to another file. This ensures that existing data is always overwritten with zeroes before the disk space is released.

See also:

• ``Understanding intent logging''