Btrfs
Documentation
Section titled “Documentation”https://btrfs.readthedocs.io/en/latest/index.html
https://wiki.archlinux.org/title/Btrfs
https://wiki.nixos.org/wiki/Btrfs
Reference
Section titled “Reference”Enable quota groups
Section titled “Enable quota groups”https://btrfs.readthedocs.io/en/latest/Qgroups.html
https://wiki.archlinux.org/title/Btrfs#Quota
sudo btrfs quota enable /