more logging related to filer metadata subscription

weed/filer/meta_aggregator.go

@@ -185,7 +185,7 @@ func (ma *MetaAggregator) doSubscribeToOneFiler(f *Filer, self pb.ServerAddress,
 		return nil
 	}
 
-	glog.V(4).Infof("subscribing remote %s meta change: %v, clientId:%d", peer, time.Unix(0, lastTsNs), ma.filer.UniqueFileId)
+	glog.V(0).Infof("subscribing remote %s meta change: %v, clientId:%d", peer, time.Unix(0, lastTsNs), ma.filer.UniqueFileId)
 	err = pb.WithFilerClient(true, peer, ma.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
 		ctx, cancel := context.WithCancel(context.Background())
 		defer cancel()

weed/server/filer_grpc_server_sub_meta.go

@@ -95,12 +95,15 @@ func (fs *FilerServer) SubscribeLocalMetadata(req *filer_pb.SubscribeMetadataReq
 
 	alreadyKnown, clientName := fs.addClient(req.ClientName, peerAddress, req.ClientId)
 	if alreadyKnown {
-		return fmt.Errorf("duplicated local subscription detected for client %s id %d", clientName, req.ClientId)
+		return fmt.Errorf("duplicated local subscription detected for client %s clientId:%d", clientName, req.ClientId)
 	}
-	defer fs.deleteClient(clientName, req.ClientId)
+	defer func() {
+		glog.V(0).Infof(" - %v local subscribe %s clientId:%d", clientName, req.PathPrefix, req.ClientId)
+		fs.deleteClient(clientName, req.ClientId)
+	}()
 
 	lastReadTime := time.Unix(0, req.SinceNs)
-	glog.V(0).Infof(" %v local subscribe %s from %+v", clientName, req.PathPrefix, lastReadTime)
+	glog.V(0).Infof(" + %v local subscribe %s from %+v clientId:%d", clientName, req.PathPrefix, lastReadTime, req.ClientId)
 
 	eachEventNotificationFn := fs.eachEventNotificationFn(req, stream, clientName)