1. Apache Common Configurations. https://commons.apache.org/proper/commons-configuration/userguide/upgradeto2_0.html. Apache Common Configurations. https://commons.apache.org/proper/commons-configuration/userguide/upgradeto2_0.html.
2. Apache Hadoop. https://hadoop.apache.org/. Apache Hadoop. https://hadoop.apache.org/.
3. Specifying and Checking File System Crash-Consistency Models
4. btrfs-balance. https://man7.org/linux/man-pages/man8/btrfs-balance.8.html. btrfs-balance. https://man7.org/linux/man-pages/man8/btrfs-balance.8.html.
5. btrfs-check. https://man7.org/linux/man-pages/man8/btrfs-check.8.html. btrfs-check. https://man7.org/linux/man-pages/man8/btrfs-check.8.html.