Btrfs


 * Not to be confused with the much less widely-used BetrFS, the "Bε-tree File System"

Btrfs (B-tree file system) is a modern filesystem, with a number of advanced features. It has been a standard part of the Linux kernel since Linux 2.6.29 (2009). It was originally developed by Oracle Corporation.

Links

 * Btrfs
 * Btrfs website
 * Btrfs On-disk Format