btrfs

A filesystem based on the copy-on-write (COW) principle for Linux. Some subcommands such as btrfs device have their own usage documentation. More information: https://btrfs.readthedocs.io/en/latest/btrfs.html.

• Create subvolume:
  sudo btrfs subvolume create {{path/to/subvolume}}
• List subvolumes:
  sudo btrfs subvolume list {{path/to/mount_point}}
• Show space usage information:
  sudo btrfs filesystem df {{path/to/mount_point}}
• Enable quota:
  sudo btrfs quota enable {{path/to/subvolume}}
• Show quota:
  sudo btrfs qgroup show {{path/to/subvolume}}