Everybody talks about OpenZFS block level dedup. The real gem is to use file level deduplication in copy-on-write transactional filesystems like ZFS. cp --r

Everybody talks about OpenZFS block level dedup. The real gem is to use file level deduplication in copy-on-write transactional filesystems like ZFS. cp --reflink=auto The commands above perform a lightweight copy (zfs clone in file level), where the data blocks are copied only when modified.