[mirror_ubuntu-bionic-kernel.git] / Documentation / filesystems / btrfs.txt

BTRFS
=====

Btrfs is a copy on write filesystem for Linux aimed at implementing advanced
features while focusing on fault tolerance, repair and easy administration.
Jointly developed by several companies, licensed under the GPL and open for
contribution from anyone.

The main Btrfs features include:

    * Extent based file storage (2^64 max file size)
    * Space efficient packing of small files
    * Space efficient indexed directories
    * Dynamic inode allocation
    * Writable snapshots
    * Subvolumes (separate internal filesystem roots)
    * Object level mirroring and striping
    * Checksums on data and metadata (multiple algorithms available)
    * Compression
    * Integrated multiple device support, with several raid algorithms
    * Offline filesystem check
    * Efficient incremental backup and FS mirroring
    * Online filesystem defragmentation

For more information please refer to the wiki

  https://btrfs.wiki.kernel.org

that maintains information about administration tasks, frequently asked
questions, use cases, mount options, comprehensible changelogs, features,
manual pages, source code repositories, contacts etc.
Commit	Line	Data
c854a990 ES	1	BTRFS
c854a990 ES	2	=====
709ac06a	3
6788f5ca DS	4	Btrfs is a copy on write filesystem for Linux aimed at implementing advanced
	5	features while focusing on fault tolerance, repair and easy administration.
	6	Jointly developed by several companies, licensed under the GPL and open for
	7	contribution from anyone.
709ac06a DW	8
	9	The main Btrfs features include:
	10
	11	* Extent based file storage (2^64 max file size)
	12	* Space efficient packing of small files
	13	* Space efficient indexed directories
	14	* Dynamic inode allocation
	15	* Writable snapshots
	16	* Subvolumes (separate internal filesystem roots)
	17	* Object level mirroring and striping
	18	* Checksums on data and metadata (multiple algorithms available)
	19	* Compression
	20	* Integrated multiple device support, with several raid algorithms
6788f5ca DS	21	* Offline filesystem check
6788f5ca DS	22	* Efficient incremental backup and FS mirroring
709ac06a DW	23	* Online filesystem defragmentation
709ac06a DW	24
6788f5ca	25	For more information please refer to the wiki
709ac06a	26
6788f5ca	27	https://btrfs.wiki.kernel.org
709ac06a	28
6788f5ca DS	29	that maintains information about administration tasks, frequently asked
	30	questions, use cases, mount options, comprehensible changelogs, features,
	31	manual pages, source code repositories, contacts etc.