How to change compression algorithm used in zfs

If you want to change the way zfs compresses you data you can use the following example:

# zfs create pool/testfs
# zfs get compression pool/testfs
NAME         PROPERTY     VALUE        SOURCE
pool/testfs  compression  on           inherited from pool
# zfs set compression=gzip pool/testfs
# zfs get compression pool/testfs
NAME         PROPERTY     VALUE        SOURCE
pool/testfs  compression  gzip         local
# zfs set compression=lzjb pool/testfs
# zfs get compression pool/testfs
NAME         PROPERTY     VALUE        SOURCE
pool/testfs  compression  lzjb         local
# zfs set compression=gzip-9 pool/testfs
# zfs get compression pool/testfs
NAME         PROPERTY     VALUE        SOURCE
pool/testfs  compression  gzip-9       local
# zfs set compression=on pool/testfs
# zfs get compression pool/testfs
NAME         PROPERTY     VALUE        SOURCE
pool/testfs  compression  on           local