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About modes of temporary file systems

On most UNIX systems, temporary file system directories, such as /tmp and /usr/tmp, often hold files that do not need to be retained when the system reboots. The underlying file system does not need to maintain a high degree of structural integrity for these temporary directories. VxFS provides a mount -o tmplog option, which allows the user to achieve higher performance on temporary file systems by delaying the logging of most operations.