btrfs

A filesystem based on the copy-on-write (COW) principle for Linux. Some subcommands such as 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