diff --git a/fio.sh b/fio.sh
index f195a6e0021a80c7eb6aa0b6c974fd37dc24ad0f..f84f3766afe9abeaeff0494b0f6330bcfff0a613 100755
--- a/fio.sh
+++ b/fio.sh
@@ -23,6 +23,7 @@ function run {
 }
 
 function run_write {
+	mount |grep -q mnt || exit 1
 	MDIR=$1
 	if [ ! -d $LOGD ]
 	then
@@ -48,6 +49,7 @@ function run_write {
 }
 
 function run_read {
+	mount |grep -q mnt || exit 1
 	MDIR=$1
 	HOST=$( hostname -s )
 	dir=$MDIR/fio/$HOST