Check if pathExists before performing Unmount

pkg/volume/downwardapi/downwardapi.go

@@ -272,14 +272,7 @@ func (c *downwardAPIVolumeUnmounter) TearDown() error {
 }
 
 func (c *downwardAPIVolumeUnmounter) TearDownAt(dir string) error {
-	glog.V(3).Infof("Tearing down volume %v for pod %v at %v", c.volName, c.podUID, dir)
-
-	// Wrap EmptyDir, let it do the teardown.
-	wrapped, err := c.plugin.host.NewWrapperUnmounter(c.volName, wrappedVolumeSpec(), c.podUID)
-	if err != nil {
-		return err
-	}
-	return wrapped.TearDownAt(dir)
+	return volume.UnmountViaEmptyDir(dir, c.plugin.host, c.volName, wrappedVolumeSpec(), c.podUID)
 }
 
 func (b *downwardAPIVolumeMounter) getMetaDir() string {