mkfs.btrfs(8) [debian man page]
MKFS.BTRFS(8) System Manager's Manual MKFS.BTRFS(8) NAME
mkfs.btrfs - create an btrfs filesystem SYNOPSIS
mkfs.btrfs [ -A alloc-start ] [ -b byte-count ] [ -d data-profile ] [ -l leafsize ] [ -L label ] [ -m metadata profile ] [ -n nodesize ] [ -s sectorsize ] [ -h ] [ -V ] device [ device ... ] DESCRIPTION
mkfs.btrfs is used to create an btrfs filesystem (usually in a disk partition, or an array of disk partitions). device is the special file corresponding to the device (e.g /dev/sdXX ). If multiple devices are specified, btrfs is created spanning across the specified devices. OPTIONS
-A, --alloc-start offset Specify the offset from the start of the device to start the btrfs filesystem. The default value is zero, or the start of the device. -b, --byte-count size Specify the size of the resultant filesystem. If this option is not used, mkfs.btrfs uses all the available storage for the filesys- tem. -d, --data type Specify how the data must be spanned across the devices specified. Valid values are raid0, raid1, raid10 or single. -l, --leafsize size Specify the leaf size, the least data item in which btrfs stores data. The default value is the page size. -L, --label name Specify a label for the filesystem. -m, --metadata profile Specify how metadata must be spanned across the devices specified. Valid values are raid0, raid1, raid10 or single. -n, --nodesize size Specify the nodesize. By default the value is set to the pagesize. -s, --sectorsize size Specify the sectorsize, the minimum block allocation. -V, --version Print the mkfs.btrfs version and exit. AVAILABILITY
mkfs.btrfs is part of btrfs-progs. Btrfs is currently under heavy development, and not suitable for any uses other than benchmarking and review. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for further details. SEE ALSO
btrfsck(8) MKFS.BTRFS(8)
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MKFS.MINIX(8) System Administration MKFS.MINIX(8) NAME
mkfs.minix - make a Minix filesystem SYNOPSIS
mkfs.minix [options] device [size-in-blocks] DESCRIPTION
mkfs.minix creates a Linux MINIX filesystem on a device (usually a disk partition). The device is usually of the following form: /dev/hda[1-8] (IDE disk 1) /dev/hdb[1-8] (IDE disk 2) /dev/sda[1-8] (SCSI disk 1) /dev/sdb[1-8] (SCSI disk 2) The device may be a block device or a image file of one, but this is not enforced. Expect not much fun on a character device :-). The size-in-blocks parameter is the desired size of the file system, in blocks. It is present only for backwards compatibility. If omit- ted the size will be determined automatically. Only block counts strictly greater than 10 and strictly less than 65536 are allowed. OPTIONS
-c, --check Check the device for bad blocks before creating the filesystem. If any are found, the count is printed. -n, --namelength length Specify the maximum length of filenames. Currently, the only allowable values are 14 and 30 for file system versions 1 and 2. Ver- sion 3 allows only value 60. The default is 30. -i, --inodes number Specify the number of inodes for the filesystem. -l, --badblocks filename Read the list of bad blocks from filename. The file has one bad-block number per line. The count of bad blocks read is printed. -1 Make a Minix version 1 filesystem. This is the default. -2, -v Make a Minix version 2 filesystem. -3 Make a Minix version 3 filesystem. -V, --version Display version information and exit. The long option cannot be combined with other options. -h, --help Display help text and exit. EXIT CODES
The exit code returned by mkfs.minix is one of the following: 0 No errors 8 Operational error 16 Usage or syntax error SEE ALSO
fsck(8), mkfs(8), reboot(8) AVAILABILITY
The mkfs.minix command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/. util-linux June 2015 MKFS.MINIX(8)