mounted_volume_resize.go

Documentation: k8s.io/kubernetes/test/e2e/storage

     1  /*
     2  Copyright 2018 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  	"github.com/onsi/ginkgo/v2"
    22  	"github.com/onsi/gomega"
    23  	v1 "k8s.io/api/core/v1"
    24  	storagev1 "k8s.io/api/storage/v1"
    25  	"k8s.io/apimachinery/pkg/api/resource"
    26  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    27  	admissionapi "k8s.io/pod-security-admission/api"
    28  
    29  	utilerrors "k8s.io/apimachinery/pkg/util/errors"
    30  	clientset "k8s.io/client-go/kubernetes"
    31  	"k8s.io/kubernetes/test/e2e/feature"
    32  	"k8s.io/kubernetes/test/e2e/framework"
    33  	e2edeployment "k8s.io/kubernetes/test/e2e/framework/deployment"
    34  	e2enode "k8s.io/kubernetes/test/e2e/framework/node"
    35  	e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
    36  	e2epv "k8s.io/kubernetes/test/e2e/framework/pv"
    37  	e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
    38  	"k8s.io/kubernetes/test/e2e/storage/testsuites"
    39  	"k8s.io/kubernetes/test/e2e/storage/utils"
    40  )
    41  
    42  var _ = utils.SIGDescribe("Mounted volume expand", feature.StorageProvider, func() {
    43  	var (
    44  		c                 clientset.Interface
    45  		ns                string
    46  		pvc               *v1.PersistentVolumeClaim
    47  		sc                *storagev1.StorageClass
    48  		nodeName          string
    49  		nodeKeyValueLabel map[string]string
    50  		nodeLabelValue    string
    51  		nodeKey           string
    52  	)
    53  
    54  	f := framework.NewDefaultFramework("mounted-volume-expand")
    55  	f.NamespacePodSecurityLevel = admissionapi.LevelPrivileged
    56  	ginkgo.BeforeEach(func(ctx context.Context) {
    57  		e2eskipper.SkipUnlessProviderIs("aws", "gce")
    58  		c = f.ClientSet
    59  		ns = f.Namespace.Name
    60  		framework.ExpectNoError(e2enode.WaitForAllNodesSchedulable(ctx, c, f.Timeouts.NodeSchedulable))
    61  
    62  		node, err := e2enode.GetRandomReadySchedulableNode(ctx, f.ClientSet)
    63  		framework.ExpectNoError(err)
    64  		nodeName = node.Name
    65  
    66  		nodeKey = "mounted_volume_expand_" + ns
    67  		nodeLabelValue = ns
    68  		nodeKeyValueLabel = map[string]string{nodeKey: nodeLabelValue}
    69  		e2enode.AddOrUpdateLabelOnNode(c, nodeName, nodeKey, nodeLabelValue)
    70  		ginkgo.DeferCleanup(e2enode.RemoveLabelOffNode, c, nodeName, nodeKey)
    71  
    72  		test := testsuites.StorageClassTest{
    73  			Name:                 "default",
    74  			Timeouts:             f.Timeouts,
    75  			ClaimSize:            "2Gi",
    76  			AllowVolumeExpansion: true,
    77  			DelayBinding:         true,
    78  			Parameters:           make(map[string]string),
    79  		}
    80  
    81  		sc = testsuites.SetupStorageClass(ctx, c, newStorageClass(test, ns, "resizing"))
    82  		if !*sc.AllowVolumeExpansion {
    83  			framework.Failf("Class %s does not allow volume expansion", sc.Name)
    84  		}
    85  
    86  		pvc = e2epv.MakePersistentVolumeClaim(e2epv.PersistentVolumeClaimConfig{
    87  			ClaimSize:        test.ClaimSize,
    88  			StorageClassName: &(sc.Name),
    89  			VolumeMode:       &test.VolumeMode,
    90  		}, ns)
    91  		pvc, err = c.CoreV1().PersistentVolumeClaims(pvc.Namespace).Create(ctx, pvc, metav1.CreateOptions{})
    92  		framework.ExpectNoError(err, "Error creating pvc")
    93  		ginkgo.DeferCleanup(func(ctx context.Context) {
    94  			framework.Logf("AfterEach: Cleaning up resources for mounted volume resize")
    95  
    96  			if errs := e2epv.PVPVCCleanup(ctx, c, ns, nil, pvc); len(errs) > 0 {
    97  				framework.Failf("AfterEach: Failed to delete PVC and/or PV. Errors: %v", utilerrors.NewAggregate(errs))
    98  			}
    99  		})
   100  	})
   101  
   102  	ginkgo.It("Should verify mounted devices can be resized", func(ctx context.Context) {
   103  		pvcClaims := []*v1.PersistentVolumeClaim{pvc}
   104  
   105  		// The reason we use a node selector is because we do not want pod to move to different node when pod is deleted.
   106  		// Keeping pod on same node reproduces the scenario that volume might already be mounted when resize is attempted.
   107  		// We should consider adding a unit test that exercises this better.
   108  		ginkgo.By("Creating a deployment with selected PVC")
   109  		deployment, err := e2edeployment.CreateDeployment(ctx, c, int32(1), map[string]string{"test": "app"}, nodeKeyValueLabel, ns, pvcClaims, admissionapi.LevelRestricted, "")
   110  		framework.ExpectNoError(err, "Failed creating deployment %v", err)
   111  		ginkgo.DeferCleanup(c.AppsV1().Deployments(ns).Delete, deployment.Name, metav1.DeleteOptions{})
   112  
   113  		// PVC should be bound at this point
   114  		ginkgo.By("Checking for bound PVC")
   115  		pvs, err := e2epv.WaitForPVClaimBoundPhase(ctx, c, pvcClaims, framework.ClaimProvisionTimeout)
   116  		framework.ExpectNoError(err, "Failed waiting for PVC to be bound %v", err)
   117  		gomega.Expect(pvs).To(gomega.HaveLen(1))
   118  
   119  		ginkgo.By("Wait for a pod from deployment to be running")
   120  		podList, err := e2edeployment.GetPodsForDeployment(ctx, c, deployment)
   121  		framework.ExpectNoError(err, "While getting pods from deployment")
   122  		gomega.Expect(podList.Items).NotTo(gomega.BeEmpty())
   123  		pod := podList.Items[0]
   124  		err = e2epod.WaitTimeoutForPodRunningInNamespace(ctx, c, pod.Name, pod.Namespace, f.Timeouts.PodStart)
   125  		framework.ExpectNoError(err, "While waiting for pods to be ready")
   126  
   127  		ginkgo.By("Expanding current pvc")
   128  		newSize := resource.MustParse("6Gi")
   129  		newPVC, err := testsuites.ExpandPVCSize(ctx, pvc, newSize, c)
   130  		framework.ExpectNoError(err, "While updating pvc for more size")
   131  		pvc = newPVC
   132  		gomega.Expect(pvc).NotTo(gomega.BeNil())
   133  
   134  		pvcSize := pvc.Spec.Resources.Requests[v1.ResourceStorage]
   135  		if pvcSize.Cmp(newSize) != 0 {
   136  			framework.Failf("error updating pvc size %q", pvc.Name)
   137  		}
   138  
   139  		ginkgo.By("Waiting for cloudprovider resize to finish")
   140  		err = testsuites.WaitForControllerVolumeResize(ctx, pvc, c, totalResizeWaitPeriod)
   141  		framework.ExpectNoError(err, "While waiting for pvc resize to finish")
   142  
   143  		ginkgo.By("Getting a pod from deployment")
   144  		podList, err = e2edeployment.GetPodsForDeployment(ctx, c, deployment)
   145  		framework.ExpectNoError(err, "While getting pods from deployment")
   146  		gomega.Expect(podList.Items).NotTo(gomega.BeEmpty())
   147  		pod = podList.Items[0]
   148  
   149  		ginkgo.By("Deleting the pod from deployment")
   150  		err = e2epod.DeletePodWithWait(ctx, c, &pod)
   151  		framework.ExpectNoError(err, "while deleting pod for resizing")
   152  
   153  		ginkgo.By("Waiting for deployment to create new pod")
   154  		pod, err = waitForDeploymentToRecreatePod(ctx, c, deployment)
   155  		framework.ExpectNoError(err, "While waiting for pod to be recreated")
   156  
   157  		ginkgo.By("Waiting for file system resize to finish")
   158  		pvc, err = testsuites.WaitForFSResize(ctx, pvc, c)
   159  		framework.ExpectNoError(err, "while waiting for fs resize to finish")
   160  
   161  		pvcConditions := pvc.Status.Conditions
   162  		gomega.Expect(pvcConditions).To(gomega.BeEmpty(), "pvc should not have conditions")
   163  	})
   164  })
   165
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