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}}