Provided by: btrfs-tools_0.19+20100601-3ubuntu3_i386 bug

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
              filesystem.

       -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)