diff --git a/qa/workunits/rbd/rbd-nbd.sh b/qa/workunits/rbd/rbd-nbd.sh
index dfc4e6c8032fa..8973f68c904ab 100755
--- a/qa/workunits/rbd/rbd-nbd.sh
+++ b/qa/workunits/rbd/rbd-nbd.sh
@@ -15,27 +15,27 @@ function expect_false()
 }
 
 rbd remove $gen || true
-rbd-nbd unmap $dev || true
+sudo rbd-nbd unmap $dev || true
 
 #read test
 dd if=/dev/urandom of=$data bs=1M count=$size
 rbd --no-progress import $data $gen
-rbd-nbd --device $dev map $gen
-[ "`dd if=$data bs=1M | md5sum`" != "`dd if=$dev bs=1M | md5sum`" ] && false
+sudo rbd-nbd --device $dev map $gen
+[ "`dd if=$data bs=1M | md5sum`" != "`sudo dd if=$dev bs=1M | md5sum`" ] && false
 
 #write test
 dd if=/dev/urandom of=$data bs=1M count=$size
-dd if=$data of=$dev bs=1M
+sudo dd if=$data of=$dev bs=1M
 sync
 [ "`dd if=$data bs=1M | md5sum`" != "`rbd --no-progress export $gen - | md5sum`" ] && false
 
 #trim test
-mkfs.ext4 $dev # better idea?
+sudo mkfs.ext4 $dev # better idea?
 sync
 info=`rbd du $gen | tail -n 1`
 [ "`echo $info | awk '{print $2}'`" == "`echo $info | awk '{print $3}'`" ] && false
 
-rbd-nbd unmap $dev
+sudo rbd-nbd unmap $dev
 popd
 rm -rf rbd_nbd_test