FTFA: "Block Cloning allows to clone a file (or a subset of its blocks) into another (or the same) file by just creating additional references to the data block

FTFA: "Block Cloning allows to clone a file (or a subset of its blocks) into another (or the same) file by just creating additional references to the data blocks without copying the data itself. Block Cloning can be described as a fast, manual deduplication."