Btrfs is a new copy on write (CoW) filesystem for Linux aimed at implementing advanced features while focusing on fault tolerance, repair and easy administration. Jointly developed at multiple companies, Btrfs is licensed under the GPL and open for contribution from anyone. Considering the rapid development of Btrfs at the moment, Btrfs is currently considered experimental. But according to the wiki maintained by the btrfs community, many of the current developers and testers of Btrfs run it as their primary file system with very few “unrecoverable” problems. Thus, Linux distributions tend to ship with Btrfs as an option but not as the default. Btrfs is not a successor to the default Ext4 file system used in most Linux distributions, but it can be expected to replace Ext4 in the future. Read more at Linuxpitstop.com
