mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-26 12:34:41 +08:00
037e127452
The btrfs documentation in kernel is only meant as a starting point, so update the list of features and add link to btrfs.readthedocs.io page that is most up-to-date. The wiki is still used but information is migrated from there. Signed-off-by: David Sterba <dsterba@suse.com>
45 lines
1.5 KiB
ReStructuredText
45 lines
1.5 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
|
|
|
|
=====
|
|
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 (multiple algorithms available)
|
|
* Reflink, deduplication
|
|
* Scrub (on-line checksum verification)
|
|
* Hierarchical quota groups (subvolume and snapshot support)
|
|
* Integrated multiple device support, with several raid algorithms
|
|
* Offline filesystem check
|
|
* Efficient incremental backup and FS mirroring (send/receive)
|
|
* Trim/discard
|
|
* Online filesystem defragmentation
|
|
* Swapfile support
|
|
* Zoned mode
|
|
* Read/write metadata verification
|
|
* Online resize (shrink, grow)
|
|
|
|
For more information please refer to the documentation site or wiki
|
|
|
|
https://btrfs.readthedocs.io
|
|
|
|
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.
|