1. volume server now sends master server its max file key, so that

master server does not need to store the sequence on disk any more
2. fix raft server's failure to init cluster during bootstrapping

go/weed/weed_server/raft_server.go

@@ -77,13 +77,6 @@ func NewRaftServer(r *mux.Router, peers []string, httpAddr string, dataDir strin
 					return nil
 				}
 			}
-			var err error
-			for err != nil {
-				glog.V(0).Infoln("waiting for peers on", strings.Join(s.peers, ","), "...")
-				time.Sleep(time.Duration(1000+rand.Intn(2000)) * time.Millisecond)
-				err = s.Join(s.peers)
-			}
-			glog.V(0).Infoln("Joined cluster")
 		}
 
 		// Initialize the server by joining itself.
@@ -124,14 +117,17 @@ func (s *RaftServer) Join(peers []string) error {
 		ConnectionString: "http://" + s.httpAddr,
 	}
 
+	var err error
 	var b bytes.Buffer
 	json.NewEncoder(&b).Encode(command)
-
 	for _, m := range peers {
+		if m == s.httpAddr {
+			continue
+		}
 		target := fmt.Sprintf("http://%s/cluster/join", strings.TrimSpace(m))
 		glog.V(0).Infoln("Attempting to connect to:", target)
 
-		err := postFollowingOneRedirect(target, "application/json", &b)
+		err = postFollowingOneRedirect(target, "application/json", &b)
 
 		if err != nil {
 			glog.V(0).Infoln("Post returned error: ", err.Error())
@@ -139,11 +135,9 @@ func (s *RaftServer) Join(peers []string) error {
 				// If we receive a network error try the next member
 				continue
 			}
-
-			return err
+		} else {
+			return nil
 		}
-
-		return nil
 	}
 
 	return errors.New("Could not connect to any cluster peers")