create_pool $TESTPOOL $pool_dev
log_must zfs create -V 100m $vol_name
block_device_wait
-log_must echo "y" | newfs ${ZVOL_DEVDIR}/$vol_name > /dev/null 2>&1
+log_must eval "new_fs ${ZVOL_DEVDIR}/$vol_name > /dev/null 2>&1"
log_must mount ${ZVOL_DEVDIR}/$vol_name $mntp
log_must mkfile 50m $TMP_FILE