XFS stands for Extents File System. Some may consider this a somewhat controversial selection, given that ext4 performs perfectly well and is the current default for all of the major Linux distributions. Both XFS and ext4 are journaling filesystems; they provide online growth, LVM freezing, and numerous maintenance and repair tools.
However, XFS still has something that ext4 does not: allocation groups. ext4, like all of its predecessors, has a single file allocation table for the entire formatted device. XFS, on the other hand, can split the allocation table into several segments so that multiple independent CPU processes can write to the disk simultaneously. The end result of this is that large servers with many CPUs and random ...
