sstrncpy (vl.plugin, "swap", sizeof (vl.plugin));
sstrncpy (vl.type, "swap_io", sizeof (vl.type));
sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
sstrncpy (vl.plugin, "swap", sizeof (vl.plugin));
sstrncpy (vl.type, "swap_io", sizeof (vl.type));
sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));