Code change:
<ins> /* Copyright 2018 The Kubernetes 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 storage import ( "fmt" . "github.com/onsi/ginkgo" . "github.com/onsi/gomega" "k8s.io/api/core/v1" storagev1 "k8s.io/api/storage/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" utilerrors "k8s.io/apimachinery/pkg/util/errors" clientset "k8s.io/client-go/kubernetes" "k8s.io/kubernetes/test/e2e/framework" "k8s.io/kubernetes/test/e2e/storage/utils" ) const ( noProvisioner = "kubernetes.io/no-provisioner" pvNamePrefix  = "pv" ) func generateConfigsForStaticProvisionPVTest(scName string, volBindMode storagev1.VolumeBindingMode, volMode v1.PersistentVolumeMode, pvSource v1.PersistentVolumeSource) (*storagev1.StorageClass, framework.PersistentVolumeConfig, framework.PersistentVolumeClaimConfig) { // StorageClass scConfig := &storagev1.StorageClass{ ObjectMeta: metav1.ObjectMeta{ Name: scName, }, Provisioner:       noProvisioner, VolumeBindingMode: &volBindMode, } // PV pvConfig := framework.PersistentVolumeConfig{ PVSource:         pvSource, NamePrefix:       pvNamePrefix, StorageClassName: scName, VolumeMode:       &volMode, } // PVC pvcConfig := framework.PersistentVolumeClaimConfig{ AccessModes:      []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}, StorageClassName: &scName, VolumeMode:       &volMode, } return scConfig, pvConfig, pvcConfig } func createPVTestResource(cs clientset.Interface, ns string, scConfig *storagev1.StorageClass, pvConfig framework.PersistentVolumeConfig, pvcConfig framework.PersistentVolumeClaimConfig) (*storagev1.StorageClass, *v1.Pod, *v1.PersistentVolume, *v1.PersistentVolumeClaim) { By("Creating sc") sc, err := cs.StorageV1().StorageClasses().Create(scConfig) Expect(err).NotTo(HaveOccurred()) By("Creating pv and pvc") pv, pvc, err := framework.CreatePVPVC(cs, pvConfig, pvcConfig, ns, false) framework.ExpectNoError(err) framework.ExpectNoError(framework.WaitOnPVandPVC(cs, ns, pv, pvc)) By("Creating a pod") // TODO(mkimuram): Need to set anti-affinity with storage server pod. // Otherwise, storage server pod can also be affected on destructive tests. pod, err := framework.CreateSecPod(cs, ns, []*v1.PersistentVolumeClaim{pvc}, false, "", false, false, framework.SELinuxLabel, nil, framework.PodStartTimeout) Expect(err).NotTo(HaveOccurred()) return sc, pod, pv, pvc } func createPVTestResourceWithFailure(cs clientset.Interface, ns string, scConfig *storagev1.StorageClass, pvConfig framework.PersistentVolumeConfig, pvcConfig framework.PersistentVolumeClaimConfig) (*storagev1.StorageClass, *v1.Pod, *v1.PersistentVolume, *v1.PersistentVolumeClaim) { By("Creating sc") sc, err := cs.StorageV1().StorageClasses().Create(scConfig) Expect(err).NotTo(HaveOccurred()) By("Creating pv and pvc") pv, pvc, err := framework.CreatePVPVC(cs, pvConfig, pvcConfig, ns, false) framework.ExpectNoError(err) framework.ExpectNoError(framework.WaitOnPVandPVC(cs, ns, pv, pvc)) By("Creating a pod") pod, err := framework.CreateSecPod(cs, ns, []*v1.PersistentVolumeClaim{pvc}, false, "", false, false, framework.SELinuxLabel, nil, framework.PodStartTimeout) Expect(err).To(HaveOccurred()) return sc, pod, pv, pvc } func deletePVTestResource(f *framework.Framework, cs clientset.Interface, ns string, sc *storagev1.StorageClass, pod *v1.Pod, pv *v1.PersistentVolume, pvc *v1.PersistentVolumeClaim) { By("Deleting pod") framework.ExpectNoError(framework.DeletePodWithWait(f, cs, pod)) By("Deleting pv and pvc") errs := framework.PVPVCCleanup(cs, ns, pv, pvc) if len(errs) > 0 { framework.Failf("Failed to delete PV and/or PVC: %v", utilerrors.NewAggregate(errs)) } By("Deleting sc") framework.ExpectNoError(cs.StorageV1().StorageClasses().Delete(sc.Name, nil)) } func checkVolumeModeOfPath(pod *v1.Pod, volMode v1.PersistentVolumeMode, path string) { if volMode == v1.PersistentVolumeBlock { // Check if block exists utils.VerifyExecInPodSucceed(pod, fmt.Sprintf("test -b %s", path)) // Double check that it's not directory utils.VerifyExecInPodFail(pod, fmt.Sprintf("test -d %s", path), 1) } else { // Check if directory exists utils.VerifyExecInPodSucceed(pod, fmt.Sprintf("test -d %s", path)) // Double check that it's not block utils.VerifyExecInPodFail(pod, fmt.Sprintf("test -b %s", path), 1) } } func checkReadWriteToPath(pod *v1.Pod, volMode v1.PersistentVolumeMode, path string) { if volMode == v1.PersistentVolumeBlock { // random -> file1 utils.VerifyExecInPodSucceed(pod, "dd if=/dev/urandom of=/tmp/file1 bs=64 count=1") // file1 -> dev (write to dev) utils.VerifyExecInPodSucceed(pod, fmt.Sprintf("dd if=/tmp/file1 of=%s bs=64 count=1", path)) // dev -> file2 (read from dev) utils.VerifyExecInPodSucceed(pod, fmt.Sprintf("dd if=%s of=/tmp/file2 bs=64 count=1", path)) // file1 == file2 (check contents) utils.VerifyExecInPodSucceed(pod, "diff /tmp/file1 /tmp/file2") // Clean up temp files utils.VerifyExecInPodSucceed(pod, "rm -f /tmp/file1 /tmp/file2") // Check that writing file to block volume fails utils.VerifyExecInPodFail(pod, fmt.Sprintf("echo 'Hello world.' > %s/file1.txt", path), 1) } else { // text -> file1 (write to file) utils.VerifyExecInPodSucceed(pod, fmt.Sprintf("echo 'Hello world.' > %s/file1.txt", path)) // grep file1 (read from file and check contents) utils.VerifyExecInPodSucceed(pod, fmt.Sprintf("grep 'Hello world.' %s/file1.txt", path)) // Check that writing to directory as block volume fails utils.VerifyExecInPodFail(pod, fmt.Sprintf("dd if=/dev/urandom of=%s bs=64 count=1", path), 1) } } func skipBlockSupportTestIfUnsupported(volMode v1.PersistentVolumeMode, isBlockSupported bool) { if volMode == v1.PersistentVolumeBlock && !isBlockSupported { framework.Skipf("Skip assertion for block test for block supported plugin.(Block unsupported)") } } func skipBlockUnsupportTestUnlessUnspported(volMode v1.PersistentVolumeMode, isBlockSupported bool) { if !(volMode == v1.PersistentVolumeBlock && !isBlockSupported) { framework.Skipf("Skip assertion for block test for block unsupported plugin.(Block suppported or FileSystem test)") } } var _ = utils.SIGDescribe("PersistentVolumes-volumeMode", func() { f := framework.NewDefaultFramework("pv-volmode") const ( pvTestSCPrefix = "pvtest" ) var ( cs               clientset.Interface ns               string scName           string isBlockSupported bool serverIP         string secret           *v1.Secret serverPod        *v1.Pod pvSource         v1.PersistentVolumeSource sc               *storagev1.StorageClass pod              *v1.Pod pv               *v1.PersistentVolume pvc              *v1.PersistentVolumeClaim volMode          v1.PersistentVolumeMode volBindMode      storagev1.VolumeBindingMode ) BeforeEach(func() { cs = f.ClientSet ns = f.Namespace.Name volBindMode = storagev1.VolumeBindingImmediate }) AssertCreateDeletePodAndReadWriteVolume := func() { // For block supported plugins It("should create sc, pod, pv, and pvc, read/write to the pv, and delete all created resources", func() { skipBlockSupportTestIfUnsupported(volMode, isBlockSupported) scConfig, pvConfig, pvcConfig := generateConfigsForStaticProvisionPVTest(scName, volBindMode, volMode, pvSource) sc, pod, pv, pvc = createPVTestResource(cs, ns, scConfig, pvConfig, pvcConfig) defer deletePVTestResource(f, cs, ns, sc, pod, pv, pvc) By("Checking if persistent volume exists as expected volume mode") checkVolumeModeOfPath(pod, volMode, "/mnt/volume1") By("Checking if read/write to persistent volume works properly") checkReadWriteToPath(pod, volMode, "/mnt/volume1") }) // For block unsupported plugins It("should fail to create pod by failing to mount volume", func() { skipBlockUnsupportTestUnlessUnspported(volMode, isBlockSupported) scConfig, pvConfig, pvcConfig := generateConfigsForStaticProvisionPVTest(scName, volBindMode, volMode, pvSource) sc, pod, pv, pvc = createPVTestResourceWithFailure(cs, ns, scConfig, pvConfig, pvcConfig) deletePVTestResource(f, cs, ns, sc, pod, pv, pvc) }) } verifyAll := func() { AssertCreateDeletePodAndReadWriteVolume() // TODO(mkimuram): Add more tests } Describe("NFS", func() { const pvTestNFSSCSuffix = "nfs" BeforeEach(func() { isBlockSupported = false scName = fmt.Sprintf("%v-%v-%v", pvTestSCPrefix, ns, pvTestNFSSCSuffix) _, serverPod, serverIP = framework.NewNFSServer(cs, ns, []string{}) pvSource = v1.PersistentVolumeSource{ NFS: &v1.NFSVolumeSource{ Server:   serverIP, Path:     "/", ReadOnly: false, }, } }) AfterEach(func() { framework.Logf("AfterEach: deleting NFS server pod %q...", serverPod.Name) err := framework.DeletePodWithWait(f, cs, serverPod) Expect(err).NotTo(HaveOccurred(), "AfterEach: NFS server pod failed to delete") }) Context("FileSystem volume Test", func() { BeforeEach(func() { volMode = v1.PersistentVolumeFilesystem }) verifyAll() }) Context("Block volume Test[Feature:BlockVolume]", func() { BeforeEach(func() { volMode = v1.PersistentVolumeBlock }) verifyAll() }) }) Describe("iSCSI [Feature:Volumes]", func() { const pvTestISCSISCSuffix = "iscsi" BeforeEach(func() { isBlockSupported = true scName = fmt.Sprintf("%v-%v-%v", pvTestSCPrefix, ns, pvTestISCSISCSuffix) _, serverPod, serverIP = framework.NewISCSIServer(cs, ns) pvSource = v1.PersistentVolumeSource{ ISCSI: &v1.ISCSIPersistentVolumeSource{ TargetPortal: serverIP + ":3260", IQN:          "iqn.2003-01.org.linux-iscsi.f21.x8664:sn.4b0aae584f7c", Lun:          0, }, } }) AfterEach(func() { framework.Logf("AfterEach: deleting iSCSI server pod %q...", serverPod.Name) err := framework.DeletePodWithWait(f, cs, serverPod) Expect(err).NotTo(HaveOccurred(), "AfterEach: iSCSI server pod failed to delete") }) Context("FileSystem volume Test", func() { BeforeEach(func() { volMode = v1.PersistentVolumeFilesystem }) verifyAll() }) Context("Block volume Test[Feature:BlockVolume]", func() { BeforeEach(func() { volMode = v1.PersistentVolumeBlock }) verifyAll() }) }) Describe("Ceph-RBD [Feature:Volumes]", func() { const pvTestRBDSCSuffix = "rbd" BeforeEach(func() { isBlockSupported = true scName = fmt.Sprintf("%v-%v-%v", pvTestSCPrefix, ns, pvTestRBDSCSuffix) _, serverPod, secret, serverIP = framework.NewRBDServer(cs, ns) framework.Logf("namespace: %v, secret.Name: %v", ns, secret.Name) pvSource = v1.PersistentVolumeSource{ RBD: &v1.RBDPersistentVolumeSource{ CephMonitors: []string{serverIP}, RBDPool:      "rbd", RBDImage:     "foo", RadosUser:    "admin", SecretRef: &v1.SecretReference{ Name:      secret.Name, Namespace: ns, }, ReadOnly: false, }, } }) AfterEach(func() { framework.Logf("AfterEach: deleting Ceph-RDB server secret %q...", secret.Name) secErr := cs.CoreV1().Secrets(ns).Delete(secret.Name, &metav1.DeleteOptions{}) framework.Logf("AfterEach: deleting Ceph-RDB server pod %q...", serverPod.Name) err := framework.DeletePodWithWait(f, cs, serverPod) if secErr != nil || err != nil { if secErr != nil { framework.Logf("AfterEach: Ceph-RDB delete secret failed: %v", secErr) } if err != nil { framework.Logf("AfterEach: Ceph-RDB server pod delete failed: %v", err) } framework.Failf("AfterEach: cleanup failed") } }) Context("FileSystem volume Test", func() { BeforeEach(func() { volMode = v1.PersistentVolumeFilesystem }) verifyAll() }) Context("Block volume Test[Feature:BlockVolume]", func() { BeforeEach(func() { volMode = v1.PersistentVolumeBlock }) verifyAll() }) }) Describe("CephFS [Feature:Volumes]", func() { const pvTestCephFSSCSuffix = "cephfs" BeforeEach(func() { isBlockSupported = false scName = fmt.Sprintf("%v-%v-%v", pvTestSCPrefix, ns, pvTestCephFSSCSuffix) _, serverPod, secret, serverIP = framework.NewRBDServer(cs, ns) pvSource = v1.PersistentVolumeSource{ CephFS: &v1.CephFSPersistentVolumeSource{ Monitors: []string{serverIP + ":6789"}, User:     "kube", SecretRef: &v1.SecretReference{ Name:      secret.Name, Namespace: ns, }, ReadOnly: false, }, } }) AfterEach(func() { framework.Logf("AfterEach: deleting CephFS server secret %q...", secret.Name) secErr := cs.CoreV1().Secrets(ns).Delete(secret.Name, &metav1.DeleteOptions{}) framework.Logf("AfterEach: deleting CephFS server pod %q...", serverPod.Name) err := framework.DeletePodWithWait(f, cs, serverPod) if secErr != nil || err != nil { if secErr != nil { framework.Logf("AfterEach: CephFS delete secret failed: %v", secErr) } if err != nil { framework.Logf("AfterEach: CephFS server pod delete failed: %v", err) } framework.Failf("AfterEach: cleanup failed") } }) Context("FileSystem volume Test", func() { BeforeEach(func() { volMode = v1.PersistentVolumeFilesystem }) verifyAll() }) Context("Block volume Test[Feature:BlockVolume]", func() { BeforeEach(func() { volMode = v1.PersistentVolumeBlock }) verifyAll() }) }) }) </ins>

Related discussion:
text: It would better to have e2e for iSCSI persistent volume. /sig storage
/assign
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