Btrfs (pronounced as "butter fuss", "better F S", "butter F S", "b-tree F S", or simply by spelling it out) is a computer storage format that combines a file system based on the copy-on-write (COW) principle with a logical volume manager (not to be confused with Linux's LVM), developed together.

btrfs is a modern copy on write (CoW) filesystem for Linux aimed at implementing advanced features while also focusing on fault tolerance, repair and easy administration. Its main features and benefits are

Warning: Btrfs has some features that are unstable. See the Btrfs Wiki's Status, Is Btrfs stable? and Getting started for more detailed information. See the #Known issues section. For user space utilities install the btrfs-progs package, which is required for basic operations.

btrfs-dump.pl: add metadata_uuid to superblock. If your Btrfs filesystem is on a MD software RAID device created by Linux, you will also need WinMD to get this to appear under Windows.

Btrfs is under heavy development, but every effort is being made to keep the filesystem stable and fast. Because of the speed of development, running the latest possible Linux kernel is highly recommended.

Btrfs has been part of the mainline Linux kernel since 2.6.29, and Debian's Btrfs support was introduced in DebianSqueeze. Theoretically, Ext2/3/4 filesystems are upgradeable to Btrfs.

While Btrfs includes a number of advanced capabilities, this article focuses on those that can be These capabilities are built into the file system. To start, a Btrfs file system can be created on one or...

A subreddit dedicated to the discussion, usage, and maintenance of the BTRFS filesystem. This is a quirky FS and we need to stick together if we...

Btrfs, also pronounced as 'Butter FS' or 'B-tree FS', is a copy-on-write(CoW) filesystem for Linux. It is GPL licensed and focuses on providing features like scalability, data integrity, defragmentation and...

BTRFS (sometimes pronounced butter-fs) is a filesystem developed by Oracle (maintainers of The best reason to use BTRFS is that it allows one to add additional drives of any capacity to the array to...