ceph-csi/e2e/resize.go

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package e2e
import (
"fmt"
"strings"
"time"
. "github.com/onsi/gomega" // nolint
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
"k8s.io/cloud-provider/volume/helpers"
"k8s.io/kubernetes/test/e2e/framework"
e2elog "k8s.io/kubernetes/test/e2e/framework/log"
testutils "k8s.io/kubernetes/test/utils"
)
func expandPVCSize(c kubernetes.Interface, pvc *v1.PersistentVolumeClaim, size string, t int) error {
pvcName := pvc.Name
updatedPVC := pvc.DeepCopy()
var err error
updatedPVC, err = c.CoreV1().PersistentVolumeClaims(pvc.Namespace).Get(pvcName, metav1.GetOptions{})
if err != nil {
return fmt.Errorf("error fetching pvc %q with %v", pvcName, err)
}
timeout := time.Duration(t) * time.Minute
updatedPVC.Spec.Resources.Requests[v1.ResourceStorage] = resource.MustParse(size)
_, err = c.CoreV1().PersistentVolumeClaims(updatedPVC.Namespace).Update(updatedPVC)
Expect(err).Should(BeNil())
start := time.Now()
e2elog.Logf("Waiting up to %v to be in Resized state", pvc)
return wait.PollImmediate(poll, timeout, func() (bool, error) {
e2elog.Logf("waiting for PVC %s (%d seconds elapsed)", updatedPVC.Name, int(time.Since(start).Seconds()))
updatedPVC, err = c.CoreV1().PersistentVolumeClaims(updatedPVC.Namespace).Get(pvcName, metav1.GetOptions{})
if err != nil {
e2elog.Logf("Error getting pvc in namespace: '%s': %v", updatedPVC.Namespace, err)
if testutils.IsRetryableAPIError(err) {
return false, nil
}
return false, err
}
pvcConditions := updatedPVC.Status.Conditions
if len(pvcConditions) > 0 {
e2elog.Logf("pvc state %v", pvcConditions[0].Type)
if pvcConditions[0].Type == v1.PersistentVolumeClaimResizing || pvcConditions[0].Type == v1.PersistentVolumeClaimFileSystemResizePending {
return false, nil
}
}
if updatedPVC.Status.Capacity[v1.ResourceStorage] != resource.MustParse(size) {
e2elog.Logf("current size in status %v,expected size %v", updatedPVC.Status.Capacity[v1.ResourceStorage], resource.MustParse(size))
return false, nil
}
return true, nil
})
}
func resizePVCAndValidateSize(pvcPath, appPath string, f *framework.Framework) error {
size := "1Gi"
expandSize := "10Gi"
pvc, err := loadPVC(pvcPath)
if pvc == nil {
return err
}
pvc.Namespace = f.UniqueName
resizePvc, err := loadPVC(pvcPath)
if resizePvc == nil {
return err
}
resizePvc.Namespace = f.UniqueName
app, err := loadApp(appPath)
if err != nil {
return err
}
pvc.Spec.Resources.Requests[v1.ResourceStorage] = resource.MustParse(size)
app.Labels = map[string]string{"app": "resize-pvc"}
app.Namespace = f.UniqueName
err = createPVCAndApp("", f, pvc, app)
if err != nil {
return err
}
opt := metav1.ListOptions{
LabelSelector: "app=resize-pvc",
}
pvc, err = f.ClientSet.CoreV1().PersistentVolumeClaims(pvc.Namespace).Get(pvc.Name, metav1.GetOptions{})
if err != nil {
return err
}
if *pvc.Spec.VolumeMode == v1.PersistentVolumeFilesystem {
err = checkDirSize(app, f, &opt, size)
if err != nil {
return err
}
}
if *pvc.Spec.VolumeMode == v1.PersistentVolumeBlock {
err = checkDeviceSize(app, f, &opt, size)
if err != nil {
return err
}
}
// resize PVC
err = expandPVCSize(f.ClientSet, resizePvc, expandSize, deployTimeout)
if err != nil {
return err
}
// wait for application pod to come up after resize
err = waitForPodInRunningState(app.Name, app.Namespace, f.ClientSet, deployTimeout)
if err != nil {
return err
}
if *pvc.Spec.VolumeMode == v1.PersistentVolumeFilesystem {
err = checkDirSize(app, f, &opt, expandSize)
if err != nil {
return err
}
}
if *pvc.Spec.VolumeMode == v1.PersistentVolumeBlock {
err = checkDeviceSize(app, f, &opt, expandSize)
if err != nil {
return err
}
}
err = deletePVCAndApp("", f, resizePvc, app)
return err
}
func checkDirSize(app *v1.Pod, f *framework.Framework, opt *metav1.ListOptions, size string) error {
cmd := getDirSizeCheckCmd(app.Spec.Containers[0].VolumeMounts[0].MountPath)
return checkAppMntSize(f, opt, size, cmd, app.Namespace, deployTimeout)
}
func checkDeviceSize(app *v1.Pod, f *framework.Framework, opt *metav1.ListOptions, size string) error {
cmd := getDeviceSizeCheckCmd(app.Spec.Containers[0].VolumeDevices[0].DevicePath)
return checkAppMntSize(f, opt, size, cmd, app.Namespace, deployTimeout)
}
func getDirSizeCheckCmd(dirPath string) string {
return fmt.Sprintf("df -h|grep %s |awk '{print $2}'", dirPath)
}
func getDeviceSizeCheckCmd(devPath string) string {
return fmt.Sprintf("blockdev --getsize64 %s", devPath)
}
func checkAppMntSize(f *framework.Framework, opt *metav1.ListOptions, size, cmd, ns string, t int) error {
timeout := time.Duration(t) * time.Minute
start := time.Now()
return wait.PollImmediate(poll, timeout, func() (bool, error) {
e2elog.Logf("executing cmd %s (%d seconds elapsed)", cmd, int(time.Since(start).Seconds()))
output, stdErr := execCommandInPod(f, cmd, ns, opt)
if stdErr != "" {
e2elog.Logf("failed to execute command in app pod %v", stdErr)
return false, nil
}
s := resource.MustParse(strings.TrimSpace(output))
actualSize := helpers.RoundUpToGiB(s)
s = resource.MustParse(size)
expectedSize := helpers.RoundUpToGiB(s)
if actualSize != expectedSize {
e2elog.Logf("expected size %s found %s information", size, output)
return false, nil
}
return true, nil
})
}