Developed by IBM for its Unix-like AIX operating system, and offered as an alternative to the ext and ext2 filesystems via release under the GPL, Joumaled File System OFS) is one of the alternatives to the current ext4. It uses fewer resources, while remaining quite stable and resilient. It includes many features of Btrfs, and is a good choice when CPU power is limited, or with database systems that require synchronous writes to survive hardware failures.
