You need to do this before you create a volume.
.Pp
Device specific options must come before corresponding devices, e.g.
-.Dl bcachefs format --group=ssd /dev/sda --group=hdd /dev/sdb
+.Dl bcachefs format --group=ssd /dev/sda --label=hdd /dev/sdb
.Bl -tag -width Ds
.It Fl b , Fl -block Ns = Ns Ar size
block size, in bytes (e.g. 4k)
.It Fl -data_checksum_type Ns = Ns ( Cm none | crc32c | crc64 )
Set data checksum type (default:
.Cm crc32c ) .
-.It Fl -compression_type Ns = Ns ( Cm none | lz4 | gzip )
+.It Fl -compression Ns = Ns ( Cm none | lz4 | gzip | zstd )
Set compression type (default:
.Cm none ) .
.It Fl -data_replicas Ns = Ns Ar number