1MKFS.BTRFS(8)               System Manager's Manual              MKFS.BTRFS(8)
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NAME

6       mkfs.btrfs - create an btrfs filesystem
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SYNOPSIS

9       mkfs.btrfs  [ -A alloc-start ] [ -b byte-count ] [  -d data-profile ] [
10       -l leafsize ] [  -L label ] [  -m metadata profile ] [  -n nodesize ] [
11       -s sectorsize ] [  -h ] [  -V ]  device [  device ... ]
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DESCRIPTION

14       mkfs.btrfs  is  used  to  create an btrfs filesystem (usually in a disk
15       partition, or an array of disk partitions).  device is the special file
16       corresponding  to  the  device  (e.g /dev/sdXX ).  If multiple  devices
17       are specified, btrfs is created spanning across the specified  devices.
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OPTIONS

20       -A, --alloc-start offset
21              Specify the offset from the start of the  device  to  start  the
22              btrfs filesystem. The default value is zero, or the start of the
23              device.
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25       -b, --byte-count size
26              Specify the size of the resultant filesystem. If this option  is
27              not  used,  mkfs.btrfs  uses  all  the available storage for the
28              filesystem.
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30       -d, --data type
31              Specify how the data must be spanned across the  devices  speci‐
32              fied. Valid values are raid0, raid1, raid10 or single.
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34       -l, --leafsize size
35              Specify the leaf size, the least data item in which btrfs stores
36              data. The default value is the page size.
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38       -L, --label name
39              Specify a label for the filesystem.
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41       -m, --metadata profile
42              Specify how metadata must be spanned across the  devices  speci‐
43              fied. Valid values are raid0, raid1, raid10 or single.
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45       -n, --nodesize size
46              Specify  the  nodesize. By default the value is set to the page‐
47              size.
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49       -s, --sectorsize size
50              Specify the sectorsize, the minimum block allocation.
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52       -V, --version
53              Print the mkfs.btrfs version and exit.
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AVAILABILITY

56       mkfs.btrfs is part of  btrfs-progs.  Btrfs  is  currently  under  heavy
57       development,  and not suitable for any uses other than benchmarking and
58       review.  Please refer to the  btrfs  wiki  http://btrfs.wiki.kernel.org
59       for further details.
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SEE ALSO

62       btrfsck(8)
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66                                                                 MKFS.BTRFS(8)
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