====== Btrfs ======

  * https://wiki.debian.org/Btrfs
  * https://btrfs.wiki.kernel.org/index.php/Btrfsck
  * http://linuxfr.org/users/ar7/journaux/btrfs-et-opensuse-episode-5-les-quotas

===== Procédures (exemple) =====
  * https://github.com/kdave/btrfsmaintenance