Extra variables in the code btrfs.cc
https://gitlab.gnome.org/GNOME/gparted/-/blob/master/src/btrfs.cc?ref_type=heads#L78 here is fs.check
that was defined by value 3 in https://gitlab.gnome.org/GNOME/gparted/-/blob/master/src/btrfs.cc?ref_type=heads#L70.
https://gitlab.gnome.org/GNOME/gparted/-/blob/master/src/btrfs.cc?ref_type=heads#L83 fs.read
has value 3 https://gitlab.gnome.org/GNOME/gparted/-/blob/master/src/btrfs.cc?ref_type=heads#L67
Maybe should remove them from checks?