+#define ZPOOL_CONFIG_REWIND_INFO "rewind_info" /* not stored on disk */
+#define ZPOOL_CONFIG_UNSUP_FEAT "unsup_feat" /* not stored on disk */
+#define ZPOOL_CONFIG_ENABLED_FEAT "enabled_feat" /* not stored on disk */
+#define ZPOOL_CONFIG_CAN_RDONLY "can_rdonly" /* not stored on disk */
+#define ZPOOL_CONFIG_FEATURES_FOR_READ "features_for_read"
+#define ZPOOL_CONFIG_FEATURE_STATS "feature_stats" /* not stored on disk */