AFS-TRIM

Recover unused disk space from a file data section or index that is configured for automatic file sizing.

Syntax

AFS-TRIM file-specifier {index-name}

Syntax elements

file-specifierThe name of the required file data section or of the file containing the required index.

See General Conventions for the full syntax of file-specifier.

index-nameOptional. The name of the required index.

Operation

As an AFS file expands, disk space is reserved for the additional groups required. In a large AFS file that has stopped expanding, this can mean that a large amount of disk space is unavailable for use by other files. AFS-TRIM allows you to recover this unused disk space.

Restrictions

Can only be run by the database owner.

Comments

AFS-TRIM will fail if the file is expanding at the time.

Frequent use of AFS-TRIM on files that are still expanding is not recommended. This can impact filing system performance and eventually limit the maximum size of the file.

AFS-TRIM is not transaction logged.