sstrncpy(vl.plugin, "disk", sizeof(vl.plugin));
sstrncpy(vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance));
sstrncpy(vl.type, "disk_io_time", sizeof(vl.type));
sstrncpy(vl.plugin, "disk", sizeof(vl.plugin));
sstrncpy(vl.plugin_instance, plugin_instance, sizeof(vl.plugin_instance));
sstrncpy(vl.type, "disk_io_time", sizeof(vl.type));