diff --git a/src/plugins/volumes.c b/src/plugins/volumes.c
index 1d3d0d6..cc545ce 100644
--- a/src/plugins/volumes.c
+++ b/src/plugins/volumes.c
@@ -26,6 +26,8 @@
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
+/* TODO:
+ * - detect and report errors when (un)mounting */