Fix devicePath for raw block expansion

Fix tests

Author: gnufied

pkg/kubelet/volumemanager/populator/BUILD

@@ -11,7 +11,6 @@ go_library(
     srcs = ["desired_state_of_world_populator.go"],
     importpath = "k8s.io/kubernetes/pkg/kubelet/volumemanager/populator",
     deps = [
-        "//pkg/api/v1/pod:go_default_library",
         "//pkg/features:go_default_library",
         "//pkg/kubelet/config:go_default_library",
         "//pkg/kubelet/container:go_default_library",

pkg/kubelet/volumemanager/populator/desired_state_of_world_populator.go

@@ -388,7 +388,10 @@ func (dswp *desiredStateOfWorldPopulator) checkVolumeFSResize(
 		// so we only need to check it once if more than one pod use it.
 		return
 	}
-	if mountedReadOnlyByPod(podVolume, pod) {
+	// volumeSpec.ReadOnly is the value that determines if volume could be formatted when being mounted.
+	// This is the same flag that determines filesystem resizing behaviour for offline resizing and hence
+	// we should use it here. This value comes from Pod.spec.volumes.persistentVolumeClaim.readOnly.
+	if volumeSpec.ReadOnly {
 		// This volume is used as read only by this pod, we don't perform resize for read only volumes.
 		klog.V(5).Infof("Skip file system resize check for volume %s in pod %s/%s "+
 			"as the volume is mounted as readonly", podVolume.Name, pod.Namespace, pod.Name)
@@ -400,13 +403,6 @@ func (dswp *desiredStateOfWorldPopulator) checkVolumeFSResize(
 	processedVolumesForFSResize.Insert(string(uniqueVolumeName))
 }
 
-func mountedReadOnlyByPod(podVolume v1.Volume, pod *v1.Pod) bool {
-	if podVolume.PersistentVolumeClaim.ReadOnly {
-		return true
-	}
-	return false
-}
-
 func getUniqueVolumeName(
 	podName volumetypes.UniquePodName,
 	outerVolumeSpecName string,