usage: mkfs.btrfs [options] <dev> [<dev...>]

Create a BTRFS filesystem on a device or multiple devices

Allocation profiles:
-d, --data PROFILE        data profile, raid0, raid1, raid1c3, raid1c4, raid5, raid6, raid10, dup or single
-m, --metadata PROFILE    metadata profile, values like for data profile
-M, --mixed               mix metadata and data together

Features:
--csum TYPE
--checksum TYPE           checksum algorithm to use, crc32c (default), xxhash, sha256, blake2
-n, --nodesize SIZE       size of btree nodes, 16K (default), 4K, 8K, 32K, 64K
-s, --sectorsize SIZE     data block size (default 4K, may not be mountable by current kernel if CPU page size is different)
-O, --features LIST       comma separated list of filesystem features (use '-O list-all' to list features)
-L, --label LABEL         set the filesystem label (maximum length 255)
-U, --uuid UUID           specify the filesystem UUID (must be unique for a filesystem with multiple devices)
--device-uuid UUID        specify the filesystem device UUID (a.k.a sub-uuid) (for single device filesystem only)

Creation:
-b, --byte-count SIZE     set size of each device to SIZE (filesystem size is sum of all device sizes)
-r, --rootdir DIR         copy files from DIR to the image root directory, can be combined with --subvol
--compress ALGO[:LEVEL]   compress files by algorithm and level, ALGO can be 'no' (default), zstd, lzo, zlib
                          Built-in:
                          - ZSTD: yes (levels 1..15)
                          - LZO: yes
                          - ZLIB: yes (levels 1..9)
-u, --subvol TYPE:SUBDIR  create SUBDIR as subvolume rather than normal directory, can be specified multiple times
                          TYPE is one of:
                          - rw - (default) create a writeable subvolume in SUBDIR
                          - ro - create the subvolume as read-only
                          - default - the SUBDIR will be a subvolume and also set as default (can be specified only once)
                          - default-ro - like 'default' and is created as read-only subvolume (can be specified only
                          once)
--inode-flags FLAGS:PATH  specify that path to have inode flags, can be specified multiple times
                          FLAGS is one of:
                          - nodatacow - disable data CoW, implies nodatasum for regular files
                          - nodatasum - disable data checksum only
--reflink                 (with --rootdir) write file data by cloning ranges
--shrink                  (with --rootdir) shrink the filled filesystem to minimal size
-K, --nodiscard           do not perform whole device TRIM
-f, --force               force overwrite of existing filesystem

General:
-q, --quiet               no messages except errors
-v, --verbose             increase verbosity level, default is 1
-V, --version             print the mkfs.btrfs version, builtin features and exit
--help                    print this help and exit

Deprecated:
-R, --runtime-features LIST
                          removed in 6.3, use -O, --features