diff --git a/pkg/controller/controller_test.go b/pkg/controller/controller_test.go
index 4e6dc8d41..239fef686 100644
--- a/pkg/controller/controller_test.go
+++ b/pkg/controller/controller_test.go
@@ -211,7 +211,7 @@ func TestController(t *testing.T) {
 			disableVolumeInUseErrorHandler: true,
 		},
 	} {
-		client := csi.NewMockClient("mock", test.NodeResize, true, false, true, true, false)
+		client := csi.NewMockClient("mock", test.NodeResize, true, false, true, true)
 		driverName, _ := client.GetDriverName(context.TODO())
 
 		var expectedCap resource.Quantity
@@ -378,7 +378,7 @@ func TestResizePVC(t *testing.T) {
 		},
 	} {
 		t.Run(test.Name, func(t *testing.T) {
-			client := csi.NewMockClient("mock", test.NodeResize, true, false, true, true, false)
+			client := csi.NewMockClient("mock", test.NodeResize, true, false, true, true)
 			if test.expansionError != nil {
 				client.SetExpansionError(test.expansionError)
 			}
diff --git a/pkg/controller/expand_and_recover_test.go b/pkg/controller/expand_and_recover_test.go
index 8d86d21e4..625359150 100644
--- a/pkg/controller/expand_and_recover_test.go
+++ b/pkg/controller/expand_and_recover_test.go
@@ -159,7 +159,7 @@ func TestExpandAndRecover(t *testing.T) {
 		test := tests[i]
 		t.Run(test.name, func(t *testing.T) {
 			featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.RecoverVolumeExpansionFailure, true)
-			client := csi.NewMockClient("foo", !test.disableNodeExpansion, !test.disableControllerExpansion, false, true, true, false)
+			client := csi.NewMockClient("foo", !test.disableNodeExpansion, !test.disableControllerExpansion, false, true, true)
 			driverName, _ := client.GetDriverName(context.TODO())
 			if test.expansionError != nil {
 				client.SetExpansionError(test.expansionError)
diff --git a/pkg/controller/resize_status_test.go b/pkg/controller/resize_status_test.go
index 7e13bfea6..67afc6844 100644
--- a/pkg/controller/resize_status_test.go
+++ b/pkg/controller/resize_status_test.go
@@ -77,7 +77,7 @@ func TestResizeFunctions(t *testing.T) {
 		tc := test
 		t.Run(tc.name, func(t *testing.T) {
 			featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.RecoverVolumeExpansionFailure, true)
-			client := csi.NewMockClient("foo", true, true, false, true, true, false)
+			client := csi.NewMockClient("foo", true, true, false, true, true)
 			driverName, _ := client.GetDriverName(context.TODO())
 
 			pvc := test.pvc
diff --git a/pkg/csi/mock_client.go b/pkg/csi/mock_client.go
index 49c93c3e2..dc8a03b7e 100644
--- a/pkg/csi/mock_client.go
+++ b/pkg/csi/mock_client.go
@@ -3,6 +3,8 @@ package csi
 import (
 	"context"
 	"fmt"
+	"maps"
+	"sync"
 	"sync/atomic"
 
 	"github.com/container-storage-interface/spec/lib/go/csi"
@@ -16,7 +18,6 @@ func NewMockClient(
 	supportsControllerModify bool,
 	supportsPluginControllerService bool,
 	supportsControllerSingleNodeMultiWriter bool,
-	supportsExtraModifyMetada bool,
 ) *MockClient {
 	return &MockClient{
 		name:                                    name,
@@ -25,7 +26,7 @@ func NewMockClient(
 		supportsControllerModify:                supportsControllerModify,
 		supportsPluginControllerService:         supportsPluginControllerService,
 		supportsControllerSingleNodeMultiWriter: supportsControllerSingleNodeMultiWriter,
-		extraModifyMetadata:                     supportsExtraModifyMetada,
+		modifiedParameters:                      make(map[string]string),
 	}
 }
 
@@ -43,7 +44,8 @@ type MockClient struct {
 	checkMigratedLabel                      bool
 	usedSecrets                             atomic.Pointer[map[string]string]
 	usedCapability                          atomic.Pointer[csi.VolumeCapability]
-	extraModifyMetadata                     bool
+	modifyMu                                sync.Mutex
+	modifiedParameters                      map[string]string
 }
 
 func (c *MockClient) GetDriverName(context.Context) (string, error) {
@@ -116,6 +118,12 @@ func (c *MockClient) GetModifyCount() int {
 	return int(c.modifyCalled.Load())
 }
 
+func (c *MockClient) GetModifiedParameters() map[string]string {
+	c.modifyMu.Lock()
+	defer c.modifyMu.Unlock()
+	return maps.Clone(c.modifiedParameters)
+}
+
 func (c *MockClient) GetCapability() *csi.VolumeCapability {
 	return c.usedCapability.Load()
 }
@@ -138,5 +146,8 @@ func (c *MockClient) Modify(
 	if c.modifyError != nil {
 		return c.modifyError
 	}
+	c.modifyMu.Lock()
+	defer c.modifyMu.Unlock()
+	maps.Copy(c.modifiedParameters, mutableParameters)
 	return nil
 }
diff --git a/pkg/modifier/csi_modifier_test.go b/pkg/modifier/csi_modifier_test.go
index de68df9f2..179eb0341 100644
--- a/pkg/modifier/csi_modifier_test.go
+++ b/pkg/modifier/csi_modifier_test.go
@@ -28,7 +28,7 @@ func TestNewModifier(t *testing.T) {
 			SupportsControllerModify: false,
 		},
 	} {
-		client := csi.NewMockClient("mock", false, false, c.SupportsControllerModify, false, false, false)
+		client := csi.NewMockClient("mock", false, false, c.SupportsControllerModify, false, false)
 		driverName := "mock-driver"
 		k8sClient, informerFactory := fakeK8s()
 		_, err := NewModifierFromClient(client, 0, k8sClient, informerFactory, false, driverName)
diff --git a/pkg/modifycontroller/controller_test.go b/pkg/modifycontroller/controller_test.go
index 3acd842e1..f78a8c951 100644
--- a/pkg/modifycontroller/controller_test.go
+++ b/pkg/modifycontroller/controller_test.go
@@ -65,7 +65,7 @@ func TestController(t *testing.T) {
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			// Setup
-			client := csi.NewMockClient(testDriverName, true, true, true, true, true, false)
+			client := csi.NewMockClient(testDriverName, true, true, true, true, true)
 
 			initialObjects := []runtime.Object{test.pvc, test.pv, testVacObject, targetVacObject}
 			ctrlInstance := setupFakeK8sEnvironment(t, client, initialObjects)
@@ -116,7 +116,7 @@ func TestModifyPVC(t *testing.T) {
 
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
-			client := csi.NewMockClient(testDriverName, true, true, true, true, true, false)
+			client := csi.NewMockClient(testDriverName, true, true, true, true, true)
 			if test.modifyFailure {
 				client.SetModifyError(fmt.Errorf("fake modification error"))
 			}
@@ -217,7 +217,7 @@ func TestSyncPVC(t *testing.T) {
 
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
-			client := csi.NewMockClient(testDriverName, true, true, true, true, true, false)
+			client := csi.NewMockClient(testDriverName, true, true, true, true, true)
 
 			initialObjects := []runtime.Object{test.pvc, test.pv, testVacObject, targetVacObject}
 			ctrlInstance := setupFakeK8sEnvironment(t, client, initialObjects)
@@ -277,7 +277,7 @@ func TestInfeasibleRetry(t *testing.T) {
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			// Setup
-			client := csi.NewMockClient(testDriverName, true, true, true, true, true, false)
+			client := csi.NewMockClient(testDriverName, true, true, true, true, true)
 			if test.csiModifyError != nil {
 				client.SetModifyError(test.csiModifyError)
 			}
diff --git a/pkg/modifycontroller/modify_status_test.go b/pkg/modifycontroller/modify_status_test.go
index 50c7de27a..ed1e2143e 100644
--- a/pkg/modifycontroller/modify_status_test.go
+++ b/pkg/modifycontroller/modify_status_test.go
@@ -104,7 +104,7 @@ func TestMarkControllerModifyVolumeStatus(t *testing.T) {
 		tc := test
 		t.Run(tc.name, func(t *testing.T) {
 			featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.VolumeAttributesClass, true)
-			client := csi.NewMockClient("foo", true, true, true, true, true, false)
+			client := csi.NewMockClient("foo", true, true, true, true, true)
 			driverName, _ := client.GetDriverName(context.TODO())
 
 			pvc := test.pvc
@@ -164,7 +164,7 @@ func TestUpdateConditionBasedOnError(t *testing.T) {
 		tc := test
 		t.Run(tc.name, func(t *testing.T) {
 			featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.VolumeAttributesClass, true)
-			client := csi.NewMockClient("foo", true, true, true, true, true, false)
+			client := csi.NewMockClient("foo", true, true, true, true, true)
 			driverName, _ := client.GetDriverName(context.TODO())
 
 			pvc := test.pvc
@@ -233,7 +233,7 @@ func TestMarkControllerModifyVolumeCompleted(t *testing.T) {
 		tc := test
 		t.Run(tc.name, func(t *testing.T) {
 			featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.VolumeAttributesClass, true)
-			client := csi.NewMockClient("foo", true, true, true, true, true, false)
+			client := csi.NewMockClient("foo", true, true, true, true, true)
 			driverName, _ := client.GetDriverName(context.TODO())
 
 			var initialObjects []runtime.Object
@@ -295,7 +295,7 @@ func TestRemovePVCFromModifyVolumeUncertainCache(t *testing.T) {
 		tc := test
 		t.Run(tc.name, func(t *testing.T) {
 			featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.VolumeAttributesClass, true)
-			client := csi.NewMockClient("foo", true, true, true, true, true, false)
+			client := csi.NewMockClient("foo", true, true, true, true, true)
 			driverName, _ := client.GetDriverName(context.TODO())
 
 			var initialObjects []runtime.Object
diff --git a/pkg/modifycontroller/modify_volume.go b/pkg/modifycontroller/modify_volume.go
index 7523ab624..8e6290cb7 100644
--- a/pkg/modifycontroller/modify_volume.go
+++ b/pkg/modifycontroller/modify_volume.go
@@ -18,6 +18,7 @@ package modifycontroller
 
 import (
 	"fmt"
+	"maps"
 	"time"
 
 	"github.com/kubernetes-csi/csi-lib-utils/slowset"
@@ -161,12 +162,18 @@ func (ctrl *modifyController) callModifyVolumeOnPlugin(
 	pvc *v1.PersistentVolumeClaim,
 	pv *v1.PersistentVolume,
 	vac *storagev1beta1.VolumeAttributesClass) (*v1.PersistentVolumeClaim, *v1.PersistentVolume, error) {
+	parameters := vac.Parameters
 	if ctrl.extraModifyMetadata {
-		vac.Parameters[pvcNameKey] = pvc.GetName()
-		vac.Parameters[pvcNamespaceKey] = pvc.GetNamespace()
-		vac.Parameters[pvNameKey] = pv.GetName()
+		if len(parameters) == 0 {
+			parameters = make(map[string]string, 3)
+		} else {
+			parameters = maps.Clone(parameters)
+		}
+		parameters[pvcNameKey] = pvc.GetName()
+		parameters[pvcNamespaceKey] = pvc.GetNamespace()
+		parameters[pvNameKey] = pv.GetName()
 	}
-	err := ctrl.modifier.Modify(pv, vac.Parameters)
+	err := ctrl.modifier.Modify(pv, parameters)
 
 	if err != nil {
 		return pvc, pv, err
diff --git a/pkg/modifycontroller/modify_volume_test.go b/pkg/modifycontroller/modify_volume_test.go
index baffbe3ec..fd1f991d8 100644
--- a/pkg/modifycontroller/modify_volume_test.go
+++ b/pkg/modifycontroller/modify_volume_test.go
@@ -25,12 +25,7 @@ var (
 	targetVacObject = &storagev1beta1.VolumeAttributesClass{
 		ObjectMeta: metav1.ObjectMeta{Name: targetVac},
 		DriverName: testDriverName,
-		Parameters: map[string]string{
-			"iops":                             "4567",
-			"csi.storage.k8s.io/pvc/name":      pvcName,
-			"csi.storage.k8s.io/pvc/namespace": pvcNamespace,
-			"csi.storage.k8s.io/pv/name":       pvName,
-		},
+		Parameters: map[string]string{"iops": "4567"},
 	}
 )
 
@@ -48,7 +43,7 @@ func TestModify(t *testing.T) {
 		expectedCurrentVolumeAttributesClassName *string
 		expectedPVVolumeAttributesClassName      *string
 		withExtraMetadata                        bool
-		expectedVacParams                        map[string]string
+		expectedMutableParams                    map[string]string
 	}{
 		{
 			name:                                     "nothing to modify",
@@ -80,6 +75,7 @@ func TestModify(t *testing.T) {
 			expectedModifyVolumeStatus:               nil,
 			expectedCurrentVolumeAttributesClassName: &targetVac,
 			expectedPVVolumeAttributesClassName:      &targetVac,
+			expectedMutableParams:                    map[string]string{"iops": "4567"},
 		},
 		{
 			name:                                     "modify volume success with extra metadata",
@@ -91,7 +87,7 @@ func TestModify(t *testing.T) {
 			expectedCurrentVolumeAttributesClassName: &targetVac,
 			expectedPVVolumeAttributesClassName:      &targetVac,
 			withExtraMetadata:                        true,
-			expectedVacParams: map[string]string{
+			expectedMutableParams: map[string]string{
 				"iops":                             "4567",
 				"csi.storage.k8s.io/pvc/name":      basePVC.GetName(),
 				"csi.storage.k8s.io/pvc/namespace": basePVC.GetNamespace(),
@@ -104,12 +100,13 @@ func TestModify(t *testing.T) {
 		test := tests[i]
 		t.Run(test.name, func(t *testing.T) {
 			// Setup
-			client := csi.NewMockClient(testDriverName, true, true, true, true, true, test.withExtraMetadata)
+			client := csi.NewMockClient(testDriverName, true, true, true, true, true)
 			initialObjects := []runtime.Object{test.pvc, test.pv, testVacObject}
 			if test.vacExists {
 				initialObjects = append(initialObjects, targetVacObject)
 			}
 			ctrlInstance := setupFakeK8sEnvironment(t, client, initialObjects)
+			ctrlInstance.extraModifyMetadata = test.withExtraMetadata
 
 			// Action
 			pvc, pv, err, modifyCalled := ctrlInstance.modify(test.pvc, test.pv)
@@ -138,15 +135,10 @@ func TestModify(t *testing.T) {
 				t.Errorf("expected VolumeAttributesClassName of pv to be %v, got %v", *test.expectedPVVolumeAttributesClassName, *actualPVVolumeAttributesClassName)
 			}
 
-			if test.withExtraMetadata {
-				vacObj, err := ctrlInstance.vacLister.Get(*test.expectedPVVolumeAttributesClassName)
-				if err != nil {
-					t.Errorf("failed to get VAC: %v", err)
-				} else {
-					vacParams := vacObj.Parameters
-					if diff := cmp.Diff(test.expectedVacParams, vacParams); diff != "" {
-						t.Errorf("expected VAC parameters to be %v, got %v", test.expectedVacParams, vacParams)
-					}
+			if test.expectedMutableParams != nil {
+				p := client.GetModifiedParameters()
+				if diff := cmp.Diff(test.expectedMutableParams, p); diff != "" {
+					t.Errorf("expected mutable parameters to be %v, got %v", test.expectedMutableParams, p)
 				}
 			}
 		})
diff --git a/pkg/resizer/csi_resizer_test.go b/pkg/resizer/csi_resizer_test.go
index 6d089511f..ea6b9e023 100644
--- a/pkg/resizer/csi_resizer_test.go
+++ b/pkg/resizer/csi_resizer_test.go
@@ -72,7 +72,7 @@ func TestNewResizer(t *testing.T) {
 			Error: resizeNotSupportErr,
 		},
 	} {
-		client := csi.NewMockClient("mock", c.SupportsNodeResize, c.SupportsControllerResize, false, c.SupportsPluginControllerService, c.SupportsControllerSingleNodeMultiWriter, false)
+		client := csi.NewMockClient("mock", c.SupportsNodeResize, c.SupportsControllerResize, false, c.SupportsPluginControllerService, c.SupportsControllerSingleNodeMultiWriter)
 		driverName := "mock-driver"
 		k8sClient := fake.NewSimpleClientset()
 		resizer, err := NewResizerFromClient(client, 0, k8sClient, driverName)
@@ -106,7 +106,7 @@ func TestResizeWithSecret(t *testing.T) {
 		},
 	}
 	for _, tc := range tests {
-		client := csi.NewMockClient("mock", true, true, false, true, true, false)
+		client := csi.NewMockClient("mock", true, true, false, true, true)
 		secret := makeSecret("some-secret", "secret-namespace")
 		k8sClient := fake.NewSimpleClientset(secret)
 		pv := makeTestPV("test-csi", 2, "ebs-csi", "vol-abcde", tc.hasExpansionSecret)
@@ -164,7 +164,7 @@ func TestResizeMigratedPV(t *testing.T) {
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
 			driverName := tc.driverName
-			client := csi.NewMockClient(driverName, true, true, false, true, true, false)
+			client := csi.NewMockClient(driverName, true, true, false, true, true)
 			client.SetCheckMigratedLabel()
 			k8sClient := fake.NewSimpleClientset()
 			resizer, err := NewResizerFromClient(client, 0, k8sClient, driverName)
@@ -433,7 +433,7 @@ func TestCanSupport(t *testing.T) {
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
 			driverName := tc.driverName
-			client := csi.NewMockClient(driverName, true, true, false, true, true, false)
+			client := csi.NewMockClient(driverName, true, true, false, true, true)
 			k8sClient := fake.NewSimpleClientset()
 			resizer, err := NewResizerFromClient(client, 0, k8sClient, driverName)
 			if err != nil {