This was 14.04 as well, on a Tegra (armhf) system. eta: looked up the ticket, customer reported "when trying to delete any files, even as root, btrfs says "can

This was 14.04 as well, on a Tegra (armhf) system. eta: looked up the ticket, customer reported "when trying to delete any files, even as root, btrfs says "cannot remove"", field engineering observed the same.