thin_trim(8) System Manager's Manual thin_trim(8)

thin_trim - Issue discard requests for free pool space (offline tool).

thin_trim [options] --metadata-dev {device|file} --data-dev {device|file}

thin_trim sends discard requests to the pool device for unprovisioned areas.

This tool cannot be run on live metadata.

Print help and exit.
Print version information and exit.

thin_dump(8), thin_repair(8), thin_restore(8), thin_rmap(8), thin_metadata_size(8)

Joe Thornber <>

Device Mapper Tools System Manager's Manual