qa: rbd/simple_big.sh: drop extraneous sudo

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/qa/workunits/rbd/simple_big.sh b/qa/workunits/rbd/simple_big.sh
index 0a357fb7bfcbca862b63f94ffcdd1bbafcabc84a..70aafda4c5b0c303f0ff44f04c711ba437bb0eff 100755 (executable)
--- a/qa/workunits/rbd/simple_big.sh
+++ b/qa/workunits/rbd/simple_big.sh
@@ -3,11 +3,10 @@
 mb=100000
 
 rbd create foo --size $mb
-sudo rbd map foo
-sudo dd if=/dev/zero of=/dev/rbd/rbd/foo bs=1M count=$mb
-sudo dd if=/dev/rbd/rbd/foo of=/dev/null bs=1M count=$mb
-sudo rbd unmap /dev/rbd/rbd/foo
+DEV=$(sudo rbd map foo)
+dd if=/dev/zero of=$DEV bs=1M count=$mb
+dd if=$DEV of=/dev/null bs=1M count=$mb
+sudo rbd unmap $DEV
 rbd rm foo
 
 echo OK
-