Implement return status codes

pkg/volume/volume.go

@@ -23,6 +23,7 @@ import (
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
+	volumetypes "k8s.io/kubernetes/pkg/volume/util/types"
 )
 
 // Volume represents a directory used by pods or hosts on a node. All method
@@ -248,6 +249,9 @@ type DeviceMounter interface {
 	// individual pods can then bind mount
 	// Note that devicePath can be empty if the volume plugin does not implement any of Attach and WaitForAttach methods.
 	MountDevice(spec *Spec, devicePath string, deviceMountPath string) error
+
+	// MountDeviceWithStatusTracking is same as MountDevice except status of mount operation is also returned
+	MountDeviceWithStatusTracking(spec *Spec, devicePath string, deviceMountPath string) (volumetypes.OperationStatus, error)
 }
 
 type BulkVolumeVerifier interface {