Add namespace extended attributes to directory

cmd/nfs-client-provisioner/provisioner.go

@@ -26,6 +26,7 @@ import (
 
 	"github.com/golang/glog"
 	"github.com/kubernetes-incubator/external-storage/lib/controller"
+	"github.com/pkg/xattr"
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/wait"
@@ -65,6 +66,10 @@ func (p *nfsProvisioner) Provision(options controller.VolumeOptions) (*v1.Persis
 	if err := os.MkdirAll(fullPath, 0777); err != nil {
 		return nil, errors.New("unable to create directory to provision new pv: " + err.Error())
 	}
+	if err := xattr.Set(fullPath, "namespace", []byte(pvcNamespace)); err != nil {
+		return nil, errors.New("unable to set extended attributes on directory to provision new pv: " + err.Error())
+	}
+	os.Chmod(fullPath, 0777)
 
 	path := filepath.Join(p.path, pvName)