k8s.io/kubernetes@v1.29.3/test/e2e/upgrades/storage/persistent_volumes.go (about) 1 /* 2 Copyright 2017 The Kubernetes Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package storage 18 19 import ( 20 "context" 21 22 v1 "k8s.io/api/core/v1" 23 utilerrors "k8s.io/apimachinery/pkg/util/errors" 24 "k8s.io/kubernetes/test/e2e/framework" 25 e2epod "k8s.io/kubernetes/test/e2e/framework/pod" 26 e2eoutput "k8s.io/kubernetes/test/e2e/framework/pod/output" 27 e2epv "k8s.io/kubernetes/test/e2e/framework/pv" 28 e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper" 29 "k8s.io/kubernetes/test/e2e/upgrades" 30 31 "github.com/onsi/ginkgo/v2" 32 ) 33 34 // PersistentVolumeUpgradeTest test that a pv is available before and after a cluster upgrade. 35 type PersistentVolumeUpgradeTest struct { 36 pvc *v1.PersistentVolumeClaim 37 } 38 39 // Name returns the tracking name of the test. 40 func (PersistentVolumeUpgradeTest) Name() string { return "[sig-storage] persistent-volume-upgrade" } 41 42 const ( 43 pvTestFile string = "/mnt/volume1/pv_upgrade_test" 44 pvTestData string = "keep it pv" 45 pvWriteCmd string = "echo \"" + pvTestData + "\" > " + pvTestFile 46 pvReadCmd string = "cat " + pvTestFile 47 ) 48 49 // Setup creates a pv and then verifies that a pod can consume it. The pod writes data to the volume. 50 func (t *PersistentVolumeUpgradeTest) Setup(ctx context.Context, f *framework.Framework) { 51 52 var err error 53 e2eskipper.SkipUnlessProviderIs("gce", "gke", "openstack", "aws", "vsphere", "azure") 54 55 ns := f.Namespace.Name 56 57 ginkgo.By("Creating a PVC") 58 pvcConfig := e2epv.PersistentVolumeClaimConfig{ 59 StorageClassName: nil, 60 } 61 t.pvc = e2epv.MakePersistentVolumeClaim(pvcConfig, ns) 62 t.pvc, err = e2epv.CreatePVC(ctx, f.ClientSet, ns, t.pvc) 63 framework.ExpectNoError(err) 64 65 ginkgo.By("Consuming the PV before upgrade") 66 t.testPod(ctx, f, pvWriteCmd+";"+pvReadCmd) 67 } 68 69 // Test waits for the upgrade to complete, and then verifies that a pod can still consume the pv 70 // and that the volume data persists. 71 func (t *PersistentVolumeUpgradeTest) Test(ctx context.Context, f *framework.Framework, done <-chan struct{}, upgrade upgrades.UpgradeType) { 72 <-done 73 ginkgo.By("Consuming the PV after upgrade") 74 t.testPod(ctx, f, pvReadCmd) 75 } 76 77 // Teardown cleans up any remaining resources. 78 func (t *PersistentVolumeUpgradeTest) Teardown(ctx context.Context, f *framework.Framework) { 79 errs := e2epv.PVPVCCleanup(ctx, f.ClientSet, f.Namespace.Name, nil, t.pvc) 80 if len(errs) > 0 { 81 framework.Failf("Failed to delete 1 or more PVs/PVCs. Errors: %v", utilerrors.NewAggregate(errs)) 82 } 83 } 84 85 // testPod creates a pod that consumes a pv and prints it out. The output is then verified. 86 func (t *PersistentVolumeUpgradeTest) testPod(ctx context.Context, f *framework.Framework, cmd string) { 87 pod := e2epod.MakePod(f.Namespace.Name, nil, []*v1.PersistentVolumeClaim{t.pvc}, f.NamespacePodSecurityLevel, cmd) 88 expectedOutput := []string{pvTestData} 89 e2eoutput.TestContainerOutput(ctx, f, "pod consumes pv", pod, 0, expectedOutput) 90 }