Based on kernel version 4.15. Page generated on 2018-01-29 10:00 EST.
1 BTRFS 2 ===== 3 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. 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 21 * Offline filesystem check 22 * Efficient incremental backup and FS mirroring 23 * Online filesystem defragmentation 24 25 For more information please refer to the wiki 26 27 https://btrfs.wiki.kernel.org 28 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.