@@ -87,17 +87,17 @@ func (graph *Graph) Get(name string) (*Image, error) {

 	if err != nil {

 		return nil, err

 	}

-	// Check that the filesystem layer exists

-	rootfs, err := graph.driver.Get(img.ID)

-	if err != nil {

-		return nil, fmt.Errorf("Driver %s failed to get image rootfs %s: %s", graph.driver, img.ID, err)

-	}

 	if img.ID != id {

 		return nil, fmt.Errorf("Image stored at '%s' has wrong id '%s'", id, img.ID)

 	}

 	img.graph = graph

 	if img.Size < 0 {

+		rootfs, err := graph.driver.Get(img.ID)

+		if err != nil {

+			return nil, fmt.Errorf("Driver %s failed to get image rootfs %s: %s", graph.driver, img.ID, err)

+		}

+

 		var size int64

 		if img.Parent == "" {

 			if size, err = utils.TreeSize(rootfs); err != nil {