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diff --git a/src/ceph/src/messages/MMgrBeacon.h b/src/ceph/src/messages/MMgrBeacon.h
new file mode 100644
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--- /dev/null
+++ b/src/ceph/src/messages/MMgrBeacon.h
@@ -0,0 +1,140 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software 
+ * Foundation.  See file COPYING.
+ * 
+ */
+
+#ifndef CEPH_MMGRBEACON_H
+#define CEPH_MMGRBEACON_H
+
+#include "messages/PaxosServiceMessage.h"
+#include "mon/MonCommand.h"
+
+#include "include/types.h"
+
+
+class MMgrBeacon : public PaxosServiceMessage {
+
+  static const int HEAD_VERSION = 6;
+  static const int COMPAT_VERSION = 1;
+
+protected:
+  uint64_t gid;
+  entity_addr_t server_addr;
+  bool available;
+  std::string name;
+  uuid_d fsid;
+  std::set<std::string> available_modules;
+  map<string,string> metadata; ///< misc metadata about this osd
+
+  // From active daemon to populate MgrMap::services
+  std::map<std::string, std::string> services;
+
+  // Only populated during activation
+  std::vector<MonCommand> command_descs;
+
+public:
+  MMgrBeacon()
+    : PaxosServiceMessage(MSG_MGR_BEACON, 0, HEAD_VERSION, COMPAT_VERSION),
+      gid(0), available(false)
+  {
+  }
+
+  MMgrBeacon(const uuid_d& fsid_, uint64_t gid_, const std::string &name_,
+             entity_addr_t server_addr_, bool available_,
+	     const std::set<std::string>& module_list,
+	     map<string,string>&& metadata)
+    : PaxosServiceMessage(MSG_MGR_BEACON, 0, HEAD_VERSION, COMPAT_VERSION),
+      gid(gid_), server_addr(server_addr_), available(available_), name(name_),
+      fsid(fsid_), available_modules(module_list), metadata(std::move(metadata))
+  {
+  }
+
+  uint64_t get_gid() const { return gid; }
+  entity_addr_t get_server_addr() const { return server_addr; }
+  bool get_available() const { return available; }
+  const std::string& get_name() const { return name; }
+  const uuid_d& get_fsid() const { return fsid; }
+  std::set<std::string>& get_available_modules() { return available_modules; }
+  const std::map<std::string,std::string>& get_metadata() const {
+    return metadata;
+  }
+
+  const std::map<std::string,std::string>& get_services() const {
+    return services;
+  }
+
+  void set_services(const std::map<std::string, std::string> &svcs)
+  {
+    services = svcs;
+  }
+
+  void set_command_descs(const std::vector<MonCommand> &cmds)
+  {
+    command_descs = cmds;
+  }
+
+  const std::vector<MonCommand> &get_command_descs()
+  {
+    return command_descs;
+  }
+
+private:
+  ~MMgrBeacon() override {}
+
+public:
+
+  const char *get_type_name() const override { return "mgrbeacon"; }
+
+  void print(ostream& out) const override {
+    out << get_type_name() << " mgr." << name << "(" << fsid << ","
+	<< gid << ", " << server_addr << ", " << available
+	<< ")";
+  }
+
+  void encode_payload(uint64_t features) override {
+    paxos_encode();
+    ::encode(server_addr, payload, features);
+    ::encode(gid, payload);
+    ::encode(available, payload);
+    ::encode(name, payload);
+    ::encode(fsid, payload);
+    ::encode(available_modules, payload);
+    ::encode(command_descs, payload);
+    ::encode(metadata, payload);
+    ::encode(services, payload);
+  }
+  void decode_payload() override {
+    bufferlist::iterator p = payload.begin();
+    paxos_decode(p);
+    ::decode(server_addr, p);
+    ::decode(gid, p);
+    ::decode(available, p);
+    ::decode(name, p);
+    if (header.version >= 2) {
+      ::decode(fsid, p);
+    }
+    if (header.version >= 3) {
+      ::decode(available_modules, p);
+    }
+    if (header.version >= 4) {
+      ::decode(command_descs, p);
+    }
+    if (header.version >= 5) {
+      ::decode(metadata, p);
+    }
+    if (header.version >= 6) {
+      ::decode(services, p);
+    }
+  }
+};
+
+#endif