--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "types.h"
+
+namespace rbd {
+namespace mirror {
+
+std::ostream &operator<<(std::ostream &os, const ImageId &image_id) {
+ return os << "global id=" << image_id.global_id << ", "
+ << "id=" << image_id.id;
+}
+
+std::ostream& operator<<(std::ostream& lhs, const peer_t &peer) {
+ return lhs << "uuid: " << peer.uuid
+ << " cluster: " << peer.cluster_name
+ << " client: " << peer.client_name;
+}
+
+} // namespace mirror
+} // namespace rbd