Mounting always hangs response.

main.go

@@ -184,10 +184,14 @@ func (d ofsDriver) Mount(r *volume.MountRequest) (*volume.MountResponse, error)
 			for scanner.Scan() {
 				log.WithFields(log.Fields{"name": r.Name}).Info(scanner.Text())
 			}
+			log.WithFields(log.Fields{"name": r.Name}).Info("Completing mount process")
+			cmd.Wait()
+			log.WithFields(log.Fields{"name": r.Name}).Info("Completed mount process")
 		}()
 		if err := cmd.Start(); err != nil {
 			return &volume.MountResponse{}, fmt.Errorf("unexpected error mounting '%s' error: %s", r.Name, err.Error())
 		}
+		log.WithFields(log.Fields{"name": r.Name}).Info("Process started")
 
 		// The drawback of running the mount in the foreground is there is no way to tell if it failed
 		// to initially connect. So we just wait a fixed amount of time and check for process exit.
@@ -196,6 +200,7 @@ func (d ofsDriver) Mount(r *volume.MountRequest) (*volume.MountResponse, error)
 			return &volume.MountResponse{}, fmt.Errorf("unexpected error mounting '%s' exist status: %v", r.Name, cmd.ProcessState.ExitCode())
 		}
 
+		log.WithFields(log.Fields{"name": r.Name}).Info("Volume mounted")
 		v.mounted = true
 	}
 	v.use[r.ID] = true