btrfs(8)
========

NAME
----
btrfs - control a btrfs filesystem

SYNOPSIS
--------
*btrfs* <command> [<args>]

DESCRIPTION
-----------
*btrfs* is used to control the filesystem and the files and directories stored.
It is the tool to create or destroy a snapshot or a subvolume for the
filesystem, to defrag a file or a directory, flush the data to the disk,
to resize the filesystem, to scan the device.

It is possible to abbreviate the commands unless the commands are ambiguous.
For example: it is possible to run *btrfs sub snaps* instead of
*btrfs subvolume snapshot*.
But *btrfs file s* is not allowed, because *file s* may be interpreted
both as *filesystem show* and as *filesystem sync*.

If a command is terminated by '--help', the detailed help is showed.
If the passed command matches more commands,
detailed help of all the matched commands is showed. For example
*btrfs dev --help* shows the help of all *device** commands.

COMMANDS
--------
*subvolume*::
	Create/delete/list/manage btrfs subvolume. +
	See `btrfs-subvolume`(8) for details.

*filesystem*::
	Manage a btrfs filesystem, including label setting/sync and so on. +
	See `btrfs-filesystem`(8) for details.

*[filesystem] balance*::
	Balance btrfs filesystem chunks across single or several devices. +
	See `btrfs-balance`(8) for details.

*device*::
	Manage devices managed by btrfs, including add/delete/scan and so
	on. +
	See `btrfs-device`(8) for details.

*scrub*::
	Scrub a btrfs filesystem. +
	See `btrfs-scrub`(8) for details.

*check*::
	Do off-line check on a btrfs filesystem. +
	See `btrfs-check`(8) for details.

*rescue*::
	Try to rescue damaged btrfs filesystem. +
	See `btrfs-rescue`(8) for details.

*restore*::
	Manage a btrfs filesystem, including label setting/sync and so on. +
	See `btrfs-restore`(8) for details.

*inspect-internal*::
	Debug tools for developers/hackers. +
	See `btrfs-inspect-internal`(8) for details.

*send*::
	Send subvolume data to stdout/file for backup and etc. +
	See `btrfs-send`(8) for details.

*receive*::
	Receive subvolume data from stdin/file for restore and etc. +
	See `btrfs-receive`(8) for details.
*quota*::
	Manage quota on btrfs filesystem like enabling/rescan and etc. +
	See `btrfs-quota`(8) and `btrfs-qgroup`(8) for details.

*qgroup*::
	Manage quota group(qgroup) for btrfs filesystem. +
	See `btrfs-qgroup`(8) for details.

*replace*::
	Replace btrfs devices. +
	See `btrfs-replace`(8) for details.

EXIT STATUS
-----------
*btrfs* returns a zero exit status if it succeeds. Non zero is returned in
case of failure.

AVAILABILITY
------------
*btrfs* is part of btrfs-progs.
Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for
further details.

SEE ALSO
--------
`mkfs.btrfs`(8), `ionice`(1),
`btrfs-subvolume`(8),
`btrfs-filesystem`(8),
`btrfs-balance`(8),
`btrfs-device`(8),
`btrfs-scrub`(8),
`btrfs-check`(8),
`btrfs-rescue`(8),
`btrfs-restore`(8),
`btrfs-inspect-internal`(8),
`btrfs-send`(8),
`btrfs-receive`(8),
`btrfs-quota`(8),
`btrfs-qgroup`(8),
`btrfs-replace`(8),