diff --git a/src/vstart.sh b/src/vstart.sh
index 21f26b851a1..29e50ed8b12 100755
--- a/src/vstart.sh
+++ b/src/vstart.sh
@@ -913,7 +913,7 @@ EOF
             echo "{\"cephx_secret\": \"$OSD_SECRET\"}" > $CEPH_DEV_DIR/osd$osd/new.json
             ceph_adm osd new $uuid -i $CEPH_DEV_DIR/osd$osd/new.json
             rm $CEPH_DEV_DIR/osd$osd/new.json
-            $SUDO $CEPH_BIN/$ceph_osd $extra_osd_args -i $osd $ARGS --mkfs --key $OSD_SECRET --osd-uuid $uuid $extra_seastar_args
+            prun $SUDO $CEPH_BIN/$ceph_osd $extra_osd_args -i $osd $ARGS --mkfs --key $OSD_SECRET --osd-uuid $uuid $extra_seastar_args
 
             local key_fn=$CEPH_DEV_DIR/osd$osd/keyring
             cat > $key_fn<<EOF