Merge pull request #1507 from ustuzhanin/raft_remove_peers

Raft remove peers

weed/server/raft_server.go

@@ -104,7 +104,24 @@ func NewRaftServer(grpcDialOption grpc.DialOption, peers []string, serverAddr, d
 		if err := s.raftServer.AddPeer(peer, pb.ServerToGrpcAddress(peer)); err != nil {
 			return nil, err
 		}
+	}
 
+	// Remove deleted peers
+	if raftResumeState {
+		for existsPeerName, _ := range s.raftServer.Peers() {
+			exists := false
+			for _, peer := range s.peers {
+				if peer == existsPeerName {
+					exists = true
+				}
+			}
+			if !exists {
+				if err := s.raftServer.RemovePeer(existsPeerName); err != nil {
+					glog.V(0).Infoln(err)
+					return nil, err
+				}
+			}
+		}
 	}
 
 	s.GrpcServer = raft.NewGrpcServer(s.raftServer)

weed/server/raft_server_handlers.go

@@ -1,20 +1,24 @@
 package weed_server
 
 import (
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
 	"net/http"
 )
 
 type ClusterStatusResult struct {
-	IsLeader bool     `json:"IsLeader,omitempty"`
-	Leader   string   `json:"Leader,omitempty"`
-	Peers    []string `json:"Peers,omitempty"`
+	IsLeader    bool            `json:"IsLeader,omitempty"`
+	Leader      string          `json:"Leader,omitempty"`
+	Peers       []string        `json:"Peers,omitempty"`
+	MaxVolumeId needle.VolumeId `json:"MaxVolumeId,omitempty"`
 }
 
 func (s *RaftServer) StatusHandler(w http.ResponseWriter, r *http.Request) {
 	ret := ClusterStatusResult{
-		IsLeader: s.topo.IsLeader(),
-		Peers:    s.Peers(),
+		IsLeader:    s.topo.IsLeader(),
+		Peers:       s.Peers(),
+		MaxVolumeId: s.topo.GetMaxVolumeId(),
 	}
+
 	if leader, e := s.topo.Leader(); e == nil {
 		ret.Leader = leader
 	}