remove ExpandInUsePersistentVolume feature gate

pkg/kubelet/volumemanager/cache/actual_state_of_world.go

@@ -26,9 +26,7 @@ import (
 
 	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/types"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	"k8s.io/klog/v2"
-	"k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/pkg/volume"
 	"k8s.io/kubernetes/pkg/volume/util"
 	"k8s.io/kubernetes/pkg/volume/util/operationexecutor"
@@ -714,8 +712,7 @@ func (asw *actualStateOfWorld) PodExistsInVolume(
 			return true, volumeObj.devicePath, newRemountRequiredError(volumeObj.volumeName, podObj.podName)
 		}
 		if podObj.fsResizeRequired &&
-			!volumeObj.volumeInUseErrorForExpansion &&
+			!volumeObj.volumeInUseErrorForExpansion {
-			utilfeature.DefaultFeatureGate.Enabled(features.ExpandInUsePersistentVolumes) {
 			return true, volumeObj.devicePath, newFsResizeRequiredError(volumeObj.volumeName, podObj.podName)
 		}
 	}

pkg/kubelet/volumemanager/populator/desired_state_of_world_populator.go

@@ -34,10 +34,8 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/util/wait"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	clientset "k8s.io/client-go/kubernetes"
 	"k8s.io/component-helpers/storage/ephemeral"
-	"k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/pkg/kubelet/config"
 	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
 	"k8s.io/kubernetes/pkg/kubelet/pod"
@@ -188,7 +186,6 @@ func (dswp *desiredStateOfWorldPopulator) populatorLoop() {
 func (dswp *desiredStateOfWorldPopulator) findAndAddNewPods() {
 	// Map unique pod name to outer volume name to MountedVolume.
 	mountedVolumesForPod := make(map[volumetypes.UniquePodName]map[string]cache.MountedVolume)
-	if utilfeature.DefaultFeatureGate.Enabled(features.ExpandInUsePersistentVolumes) {
 	for _, mountedVolume := range dswp.actualStateOfWorld.GetMountedVolumes() {
 		mountedVolumes, exist := mountedVolumesForPod[mountedVolume.PodName]
 		if !exist {
@@ -197,7 +194,6 @@ func (dswp *desiredStateOfWorldPopulator) findAndAddNewPods() {
 		}
 		mountedVolumes[mountedVolume.OuterVolumeSpecName] = mountedVolume
 	}
-	}
 
 	processedVolumesForFSResize := sets.NewString()
 	for _, pod := range dswp.podManager.GetPods() {
@@ -288,7 +284,6 @@ func (dswp *desiredStateOfWorldPopulator) processPodVolumes(
 	allVolumesAdded := true
 	mounts, devices := util.GetPodVolumeNames(pod)
 
-	expandInUsePV := utilfeature.DefaultFeatureGate.Enabled(features.ExpandInUsePersistentVolumes)
 	// Process volume spec for each volume defined in pod
 	for _, podVolume := range pod.Spec.Volumes {
 		if !mounts.Has(podVolume.Name) && !devices.Has(podVolume.Name) {
@@ -319,10 +314,9 @@ func (dswp *desiredStateOfWorldPopulator) processPodVolumes(
 		// sync reconstructed volume
 		dswp.actualStateOfWorld.SyncReconstructedVolume(uniqueVolumeName, uniquePodName, podVolume.Name)
 
-		if expandInUsePV {
 		dswp.checkVolumeFSResize(pod, podVolume, pvc, volumeSpec,
 			uniquePodName, mountedVolumesForPod, processedVolumesForFSResize)
-		}
+
 	}
 
 	// some of the volume additions may have failed, should not mark this pod as fully processed

pkg/kubelet/volumemanager/populator/desired_state_of_world_populator_test.go

@@ -31,9 +31,7 @@ import (
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	"k8s.io/client-go/kubernetes/fake"
 	core "k8s.io/client-go/testing"
-	featuregatetesting "k8s.io/component-base/featuregate/testing"
 	csitrans "k8s.io/csi-translation-lib"
-	"k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/pkg/kubelet/configmap"
 	containertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
 	kubepod "k8s.io/kubernetes/pkg/kubelet/pod"
@@ -913,7 +911,6 @@ func TestCheckVolumeFSResize(t *testing.T) {
 	testcases := []struct {
 		resize      func(*testing.T, *v1.PersistentVolume, *v1.PersistentVolumeClaim, *desiredStateOfWorldPopulator)
 		verify      func(*testing.T, []v1.UniqueVolumeName, v1.UniqueVolumeName)
-		enableResize bool
 		readOnlyVol bool
 		volumeMode  v1.PersistentVolumeMode
 	}{
@@ -926,22 +923,9 @@ func TestCheckVolumeFSResize(t *testing.T) {
 					t.Errorf("No resize request for any volumes, but found resize required volumes in ASW: %v", vols)
 				}
 			},
-			enableResize: true,
-			volumeMode:   v1.PersistentVolumeFilesystem,
-		},
-		{
-			// Disable the feature gate, so volume shouldn't be marked as fsResizeRequired
-			resize: func(_ *testing.T, pv *v1.PersistentVolume, pvc *v1.PersistentVolumeClaim, _ *desiredStateOfWorldPopulator) {
-				setCapacity(pv, pvc, 2)
-			},
-			verify: func(t *testing.T, vols []v1.UniqueVolumeName, _ v1.UniqueVolumeName) {
-				if len(vols) > 0 {
-					t.Errorf("Feature gate disabled, but found resize required volumes in ASW: %v", vols)
-				}
-			},
-			enableResize: false,
 			volumeMode: v1.PersistentVolumeFilesystem,
 		},
+
 		{
 			// Make volume used as ReadOnly, so volume shouldn't be marked as fsResizeRequired
 			resize: func(_ *testing.T, pv *v1.PersistentVolume, pvc *v1.PersistentVolumeClaim, _ *desiredStateOfWorldPopulator) {
@@ -953,7 +937,6 @@ func TestCheckVolumeFSResize(t *testing.T) {
 				}
 			},
 			readOnlyVol: true,
-			enableResize: true,
 			volumeMode:  v1.PersistentVolumeFilesystem,
 		},
 		{
@@ -967,7 +950,6 @@ func TestCheckVolumeFSResize(t *testing.T) {
 					t.Errorf("volume hasn't been mounted, but found resize required volumes in ASW: %v", vols)
 				}
 			},
-			enableResize: true,
 			volumeMode: v1.PersistentVolumeFilesystem,
 		},
 		{
@@ -986,7 +968,6 @@ func TestCheckVolumeFSResize(t *testing.T) {
 					t.Fatalf("Mark wrong volume as fsResizeRequired: %s", vols[0])
 				}
 			},
-			enableResize: true,
 			volumeMode: v1.PersistentVolumeFilesystem,
 		},
 		{
@@ -1005,7 +986,6 @@ func TestCheckVolumeFSResize(t *testing.T) {
 					t.Fatalf("Mark wrong volume as fsResizeRequired: %s", vols[0])
 				}
 			},
-			enableResize: true,
 			volumeMode: v1.PersistentVolumeBlock,
 		},
 	}
@@ -1071,8 +1051,6 @@ func TestCheckVolumeFSResize(t *testing.T) {
 		reconcileASW(fakeASW, fakeDSW, t)
 
 		func() {
-			defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.ExpandInUsePersistentVolumes, tc.enableResize)()
-
 			tc.resize(t, pv, pvc, dswp)
 
 			resizeRequiredVolumes := reprocess(dswp, uniquePodName, fakeDSW, fakeASW)

pkg/kubelet/volumemanager/reconciler/reconciler_test.go

@@ -31,13 +31,10 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	k8stypes "k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/wait"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	"k8s.io/client-go/kubernetes/fake"
 	core "k8s.io/client-go/testing"
 	"k8s.io/client-go/tools/record"
-	featuregatetesting "k8s.io/component-base/featuregate/testing"
 	"k8s.io/klog/v2"
-	"k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/pkg/kubelet/volumemanager/cache"
 	"k8s.io/kubernetes/pkg/volume"
 	volumetesting "k8s.io/kubernetes/pkg/volume/testing"
@@ -1118,7 +1115,6 @@ func Test_GenerateUnmapDeviceFunc_Plugin_Not_Found(t *testing.T) {
 // Mark volume as fsResizeRequired in ASW.
 // Verifies volume's fsResizeRequired flag is cleared later.
 func Test_Run_Positive_VolumeFSResizeControllerAttachEnabled(t *testing.T) {
-	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.ExpandInUsePersistentVolumes, true)()
 	blockMode := v1.PersistentVolumeBlock
 	fsMode := v1.PersistentVolumeFilesystem
 

test/e2e/storage/flexvolume_online_resize.go

@@ -39,7 +39,7 @@ import (
 	imageutils "k8s.io/kubernetes/test/utils/image"
 )
 
-var _ = utils.SIGDescribe("Mounted flexvolume volume expand [Slow] [Feature:ExpandInUsePersistentVolumes]", func() {
+var _ = utils.SIGDescribe("Mounted flexvolume volume expand [Slow]", func() {
 	var (
 		c                 clientset.Interface
 		ns                string