Index: uspace/lib/device/include/hr.h
===================================================================
--- uspace/lib/device/include/hr.h	(revision 2192a0192709982436a1529729367fecf547e3ea)
+++ uspace/lib/device/include/hr.h	(revision 640250b3b42bbd66ee02c32d6221618976e46f0e)
@@ -88,6 +88,11 @@
 	HR_METADATA_SOFTRAID,
 	HR_METADATA_MD,
-	HR_METADATA_LAST_DUMMY
+	HR_METADATA_NOOP,
+	HR_METADATA_LAST_PLACEHOLDER
 } hr_metadata_type_t;
+
+typedef enum hr_vol_flag {
+	HR_VOL_FLAG_NOOP_META = 0x01
+} hr_vol_flag_t;
 
 typedef struct hr {
@@ -100,4 +105,5 @@
 	size_t dev_no;
 	hr_level_t level;
+	uint8_t vol_flags;
 } hr_config_t;