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.

sudo btrfs subvolume create path/to/subvolume

sudo btrfs subvolume list path/to/mount_point

sudo btrfs filesystem df path/to/mount_point

sudo btrfs quota enable path/to/subvolume

sudo btrfs qgroup show path/to/subvolume