+/**
+ * \defgroup cmm cmm
+ * Cluster Metadata Manager.
+ * Implementation of md interface to provide operation between MDS-es.
+ *
+ * CMM has two set of md methods, one is for local operation which uses MDD,
+ * second is for remote operations to call different MDS.
+ * When object is allocated then proper set of methods are set for it. *
+ * @{
+ */