Btrfs

<p>Btrfs (pronounced as "better F S", "butter F S", "b-tree F S", or "B.T.R.F.S.") is a computer storage format that combines a <a href="/facts/File_system/FdPm90uc">file system</a> based on the <a href="/facts/Copy-on-write/Vz5V8uMX">copy-on-write</a> (COW) principle with a <a href="/facts/Logical_volume_management/ku3Ivefk">logical volume manager</a> (distinct from Linux's <a href="/facts/Logical_Volume_Manager_(Linux)/HV86mJw0">LVM</a>), developed together. It was created by Chris Mason in 2007 for use in <a href="/facts/Linux/9FvCKSTq">Linux</a>, and since November 2013, the file system's on-disk format has been declared stable in the Linux <a href="/facts/Kernel_(operating_system)/uEj4U3Rz">kernel</a>. 
</p><p>Btrfs is intended to address the lack of pooling, <a href="/facts/Snapshot_(computer_storage)/LKm3NX2A">snapshots</a>, <a href="/facts/File_integrity_monitoring/yHlkVM9U">integrity checking</a>, <a href="/facts/Data_scrubbing/oDTdXAJp">data scrubbing</a>, and integral multi-device spanning in <a href="/facts/Linux_file_systems/FdPm90uc">Linux file systems</a>. Mason, the principal Btrfs author, stated that its goal was "to let [Linux] scale for the storage that will be available. Scaling is not just about addressing the storage but also means being able to administer and to manage it with a clean interface that lets people see what's being used and makes it more reliable".
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Btrfs open-in-new

Btrfs