btrfstune(8)
============

NAME
----
btrfstune - tune various btrfs filesystem parameters

SYNOPSIS
--------
*btrfstune* [options] <dev> [<dev>...]

DESCRIPTION
-----------
*btrfstune* is used to tune various btrfs filesystem parameters,you can
enable/disable some extended features for btrfs.

OPTIONS
-------
-S <value>::
Updates the seeding value.
A positive value will enable seeding, zero will disable seeding, negtive is not allowed.
Enable seeding forces a fs readonly so that you can use it to build other filesystems.
-r::
Enable extended inode refs.
-x::
Enable skinny metadata extent refs.


EXIT STATUS
-----------
*btrfstune* will return 0 if no error happened.
If any problems happened, 1 will be returned.

AUTHOR
------
Written by Shilong Wang and Wenruo Qu.

COPYRIGHT
---------
Copyright (C) 2013 FUJITSU LIMITED.

License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.

This is free software: you are free  to  change  and  redistribute  it. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
--------
`mkfs.btrfs`(8)