fix always print EventTypeWarning due to err overrided

pkg/controller/volume/expand/cache/volume_resize_map.go

@@ -92,7 +92,7 @@ func NewVolumeResizeMap(kubeClient clientset.Interface) VolumeResizeMap {
 // AddPVCUpdate adds pvc for resizing
 // This function intentionally allows addition of PVCs for which pv.Spec.Size >= pvc.Spec.Size,
 // the reason being - lack of transaction in k8s means after successful resize, we can't guarantee that when we update PV,
-// pvc update will be successful too and after resize we alyways update PV first.
+// pvc update will be successful too and after resize we always update PV first.
 // If for some reason we weren't able to update PVC after successful resize, then we are going to reprocess
 // the PVC and hopefully after a no-op resize in volume plugin, PVC will be updated with right values as well.
 func (resizeMap *volumeResizeMap) AddPVCUpdate(pvc *v1.PersistentVolumeClaim, pv *v1.PersistentVolume) {

pkg/controller/volume/expand/expand_controller.go

@@ -211,16 +211,16 @@ func (expc *expandController) pvcUpdate(oldObj, newObj interface{}) {
 		volumeSpec := volume.NewSpecFromPersistentVolume(pv, false)
 		volumePlugin, err := expc.volumePluginMgr.FindExpandablePluginBySpec(volumeSpec)
 		if err != nil || volumePlugin == nil {
-			err = fmt.Errorf("didn't find a plugin capable of expanding the volume; " +
+			retErr := fmt.Errorf("didn't find a plugin capable of expanding the volume; " +
 				"waiting for an external controller to process this PVC")
 			eventType := v1.EventTypeNormal
 			if err != nil {
 				eventType = v1.EventTypeWarning
 			}
 			expc.recorder.Event(newPVC, eventType, events.ExternalExpanding,
-				fmt.Sprintf("Ignoring the PVC: %v.", err))
+				fmt.Sprintf("Ignoring the PVC: %v.", retErr))
 			klog.V(3).Infof("Ignoring the PVC %q (uid: %q) : %v.",
-				util.GetPersistentVolumeClaimQualifiedName(newPVC), newPVC.UID, err)
+				util.GetPersistentVolumeClaimQualifiedName(newPVC), newPVC.UID, retErr)
 			return
 		}
 		expc.resizeMap.AddPVCUpdate(newPVC, pv)

pkg/controller/volume/expand/pvc_populator.go

@@ -102,16 +102,16 @@ func (populator *pvcPopulator) Sync() {
 		volumeSpec := volume.NewSpecFromPersistentVolume(pv, false)
 		volumePlugin, err := populator.volumePluginMgr.FindExpandablePluginBySpec(volumeSpec)
 		if (err != nil || volumePlugin == nil) && pvcStatusSize.Cmp(pvcSize) < 0 {
-			err = fmt.Errorf("didn't find a plugin capable of expanding the volume; " +
+			retErr := fmt.Errorf("didn't find a plugin capable of expanding the volume; " +
 				"waiting for an external controller to process this PVC")
 			eventType := v1.EventTypeNormal
 			if err != nil {
 				eventType = v1.EventTypeWarning
 			}
 			populator.recorder.Event(pvc, eventType, events.ExternalExpanding,
-				fmt.Sprintf("Ignoring the PVC: %v.", err))
+				fmt.Sprintf("Ignoring the PVC: %v.", retErr))
 			klog.V(3).Infof("Ignoring the PVC %q (uid: %q) : %v.",
-				util.GetPersistentVolumeClaimQualifiedName(pvc), pvc.UID, err)
+				util.GetPersistentVolumeClaimQualifiedName(pvc), pvc.UID, retErr)
 			continue
 		}