diff --git a/src/cluster.c b/src/cluster.c
new file mode 100644
index 0000000..76dcdff
--- /dev/null
+++ b/src/cluster.c
@@ -0,0 +1,41 @@
+#include <string.h>
+
+#include "bin.h"
+#include "cluster.h"
+
+static const struct b_tree_ops cluster_table_ops = {
+	.tree_get_node = NULL,
+	.tree_put_node = NULL,
+	.tree_alloc_node = NULL,
+
+	.node_get_nr_entries = NULL,
+	.node_set_nr_entries = NULL,
+	.node_get_entries = NULL,
+	.node_get_children = NULL,
+
+	.entry_compare = NULL,
+};
+
+void cluster_table_init(struct cluster_table *table, FILE *storage)
+{
+	memset(table, 0x0, sizeof *table);
+
+	table->t_storage = storage;
+
+	b_tree_init(&table->t_base, &cluster_table_ops, sizeof(struct ec3_cluster_group), sizeof(struct ec3_cluster), EC3_CLUSTERS_PER_GROUP + 1);
+}
+
+void cluster_table_finish(struct cluster_table *table)
+{
+
+}
+
+int cluster_table_get(struct cluster_table *table, unsigned long id, struct cluster *out)
+{
+	return -1;
+}
+
+int cluster_table_put(struct cluster_table *table, const struct cluster *in)
+{
+	return -1;
+}
\ No newline at end of file
diff --git a/src/cluster.h b/src/cluster.h
new file mode 100644
index 0000000..25a1e72
--- /dev/null
+++ b/src/cluster.h
@@ -0,0 +1,27 @@
+#ifndef CLUSTER_H_
+#define CLUSTER_H_
+
+#include <stdio.h>
+
+#include "b-tree.h"
+
+struct cluster_table {
+	struct b_tree t_base;
+	FILE *t_storage;
+};
+
+struct cluster {
+	unsigned long c_id;
+	size_t c_base;
+	size_t c_len;
+	unsigned long c_checksum;
+	unsigned int c_flags;
+};
+
+extern void cluster_table_init(struct cluster_table *table, FILE *storage);
+extern void cluster_table_finish(struct cluster_table *table);
+
+extern int cluster_table_get(struct cluster_table *table, unsigned long id, struct cluster *out);
+extern int cluster_table_put(struct cluster_table *table, const struct cluster *in);
+
+#endif
\ No newline at end of file