add printouts for synchronizing metadata which can be slow for large folders

weed/command/mount_std.go

@@ -141,26 +141,13 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		options = append(options, fuse.AllowNonEmptyMount())
 	}
 
-	// mount
-	c, err := fuse.Mount(dir, options...)
-	if err != nil {
-		glog.V(0).Infof("mount: %v", err)
-		return true
-	}
-	defer fuse.Unmount(dir)
-
-	grace.OnInterrupt(func() {
-		fuse.Unmount(dir)
-		c.Close()
-	})
-
 	// find mount point
 	mountRoot := filerMountRootPath
 	if mountRoot != "/" && strings.HasSuffix(mountRoot, "/") {
 		mountRoot = mountRoot[0 : len(mountRoot)-1]
 	}
 
-	err = fs.Serve(c, filesys.NewSeaweedFileSystem(&filesys.Option{
+	seaweedFileSystem := filesys.NewSeaweedFileSystem(&filesys.Option{
 		FilerGrpcAddress:            filerGrpcAddress,
 		GrpcDialOption:              grpcDialOption,
 		FilerMountRootPath:          mountRoot,
@@ -182,7 +169,23 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		OutsideContainerClusterMode: *mountOptions.outsideContainerClusterMode,
 		AsyncMetaDataCaching:        *mountOptions.asyncMetaDataCaching,
 		Cipher:                      cipher,
-	}))
+	})
+
+	// mount
+	c, err := fuse.Mount(dir, options...)
+	if err != nil {
+		glog.V(0).Infof("mount: %v", err)
+		return true
+	}
+	defer fuse.Unmount(dir)
+
+	grace.OnInterrupt(func() {
+		fuse.Unmount(dir)
+		c.Close()
+	})
+
+	glog.V(0).Infof("mounted %s%s to %s", filer, mountRoot, dir)
+	err = fs.Serve(c, seaweedFileSystem)
 
 	// check if the mount process has an error to report
 	<-c.Ready

weed/filesys/meta_cache/meta_cache_init.go

@@ -10,6 +10,7 @@ import (
 )
 
 func InitMetaCache(mc *MetaCache, client filer_pb.FilerClient, path string) error {
+	glog.V(0).Infof("synchronizing meta data ...")
 	filer_pb.TraverseBfs(client, util.FullPath(path), func(parentPath util.FullPath, pbEntry *filer_pb.Entry) {
 		entry := filer2.FromPbEntry(string(parentPath), pbEntry)
 		if err := mc.InsertEntry(context.Background(), entry); err != nil {