e2e: add e2e for bigger size clone

added e2e for below cases

Normal PVC clone to a bigger
size PVC (without encryption)

* Filesystem pvc clone to a bigger size
* Block pvc clone to a bigger size

Encrypted PVC clone to a bigger
size PVC

* Filesystem pvc clone to a bigger size
* Block pvc clone to a bigger size

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

e2e/clone.go

@@ -0,0 +1,100 @@
+/*
+Copyright 2021 The Ceph-CSI Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package e2e
+
+import (
+	"fmt"
+
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/resource"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/test/e2e/framework"
+	e2elog "k8s.io/kubernetes/test/e2e/framework/log"
+)
+
+func validateBiggerCloneFromPVC(f *framework.Framework,
+	pvcPath,
+	appPath,
+	pvcClonePath,
+	appClonePath string) error {
+	const (
+		size    = "1Gi"
+		newSize = "2Gi"
+	)
+	pvc, err := loadPVC(pvcPath)
+	if err != nil {
+		return fmt.Errorf("failed to load PVC: %w", err)
+	}
+	label := make(map[string]string)
+	pvc.Namespace = f.UniqueName
+	pvc.Spec.Resources.Requests[v1.ResourceStorage] = resource.MustParse(size)
+	app, err := loadApp(appPath)
+	if err != nil {
+		return fmt.Errorf("failed to load app: %w", err)
+	}
+	label[appKey] = appLabel
+	app.Namespace = f.UniqueName
+	app.Labels = label
+	opt := metav1.ListOptions{
+		LabelSelector: fmt.Sprintf("%s=%s", appKey, label[appKey]),
+	}
+	err = createPVCAndApp("", f, pvc, app, deployTimeout)
+	if err != nil {
+		return fmt.Errorf("failed to create pvc and application: %w", err)
+	}
+
+	pvcClone, err := loadPVC(pvcClonePath)
+	if err != nil {
+		e2elog.Failf("failed to load PVC: %v", err)
+	}
+	pvcClone.Namespace = f.UniqueName
+	pvcClone.Spec.DataSource.Name = pvc.Name
+	pvcClone.Spec.Resources.Requests[v1.ResourceStorage] = resource.MustParse(newSize)
+	appClone, err := loadApp(appClonePath)
+	if err != nil {
+		e2elog.Failf("failed to load application: %v", err)
+	}
+	appClone.Namespace = f.UniqueName
+	appClone.Labels = label
+	err = createPVCAndApp("", f, pvcClone, appClone, deployTimeout)
+	if err != nil {
+		return fmt.Errorf("failed to create pvc clone and application: %w", err)
+	}
+	err = deletePVCAndApp("", f, pvc, app)
+	if err != nil {
+		return fmt.Errorf("failed to delete pvc and application: %w", err)
+	}
+	if pvcClone.Spec.VolumeMode == nil || *pvcClone.Spec.VolumeMode == v1.PersistentVolumeFilesystem {
+		err = checkDirSize(appClone, f, &opt, newSize)
+		if err != nil {
+			return err
+		}
+	}
+
+	if pvcClone.Spec.VolumeMode != nil && *pvcClone.Spec.VolumeMode == v1.PersistentVolumeBlock {
+		err = checkDeviceSize(appClone, f, &opt, newSize)
+		if err != nil {
+			return err
+		}
+	}
+	err = deletePVCAndApp("", f, pvcClone, appClone)
+	if err != nil {
+		return fmt.Errorf("failed to delete pvc and application: %w", err)
+	}
+
+	return nil
+}

e2e/rbd.go

@@ -3444,6 +3444,77 @@ var _ = Describe("RBD", func() {
 				})
 			})
 
+			By("clone PVC to a bigger size PVC", func() {
+				By("clone PVC to bigger size encrypted PVC with VaultKMS", func() {
+					scOpts := map[string]string{
+						"encrypted":       "true",
+						"encryptionKMSID": "vault-test",
+					}
+					err := createRBDStorageClass(f.ClientSet, f, defaultSCName, nil, scOpts, deletePolicy)
+					if err != nil {
+						e2elog.Failf("failed to create storageclass: %v", err)
+					}
+					defer func() {
+						err = deleteResource(rbdExamplePath + "storageclass.yaml")
+						if err != nil {
+							e2elog.Failf("failed to delete storageclass: %v", err)
+						}
+					}()
+
+					// validate filesystem mode PVC
+					err = validateBiggerCloneFromPVC(f,
+						pvcPath,
+						appPath,
+						pvcSmartClonePath,
+						appSmartClonePath)
+					if err != nil {
+						e2elog.Failf("failed to validate bigger size clone: %v", err)
+					}
+					// validate block mode PVC
+					err = validateBiggerCloneFromPVC(f,
+						rawPvcPath,
+						rawAppPath,
+						pvcBlockSmartClonePath,
+						appBlockSmartClonePath)
+					if err != nil {
+						e2elog.Failf("failed to validate bigger size clone: %v", err)
+					}
+				})
+
+				By("clone PVC to bigger size pvc", func() {
+					err := createRBDStorageClass(f.ClientSet, f, defaultSCName, nil, nil, deletePolicy)
+					if err != nil {
+						e2elog.Failf("failed to create storageclass: %v", err)
+					}
+					// validate filesystem mode PVC
+					err = validateBiggerCloneFromPVC(f,
+						pvcPath,
+						appPath,
+						pvcSmartClonePath,
+						appSmartClonePath)
+					if err != nil {
+						e2elog.Failf("failed to validate bigger size clone: %v", err)
+					}
+					// validate block mode PVC
+					err = validateBiggerCloneFromPVC(f,
+						rawPvcPath,
+						rawAppPath,
+						pvcBlockSmartClonePath,
+						appBlockSmartClonePath)
+					if err != nil {
+						e2elog.Failf("failed to validate bigger size clone: %v", err)
+					}
+				})
+
+				By("validate image deletion", func() {
+					validateRBDImageCount(f, 0, defaultRBDPool)
+					err := waitToRemoveImagesFromTrash(f, defaultRBDPool, deployTimeout)
+					if err != nil {
+						e2elog.Failf("failed to validate rbd images in pool %s trash: %v", defaultRBDPool, err)
+					}
+				})
+			})
+
 			// Make sure this should be last testcase in this file, because
 			// it deletes pool
 			By("Create a PVC and delete PVC when backend pool deleted", func() {