Also affects Ubuntu 20.04 LTS (and other distributions like Debian 10).
Indirectly reported upstream on https://debbugs.gnu.org/cgi/bugreport.cgi?bug=17676 "btrfs subvolumes and bind-mounts make df report incorrect and/or extra results" (the reported bug is a consequence of the issue on btrfs subvolumes).
Also affects Ubuntu 20.04 LTS (and other distributions like Debian 10).
Indirectly reported upstream on https:/ /debbugs. gnu.org/ cgi/bugreport. cgi?bug= 17676 "btrfs subvolumes and bind-mounts make df report incorrect and/or extra results" (the reported bug is a consequence of the issue on btrfs subvolumes).