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https://github.com/k3s-io/kubernetes.git
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Merge pull request #76089 from vladimirvivien/csi-device-mount-skip
CSI - Skips deviceMounter.MountDevice for ephemeral volumes
This commit is contained in:
Kubernetes Prow Robot
GitHub
commit
10fc2a11a0
@ -50,6 +50,7 @@ go_test(
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"csi_drivers_store_test.go",
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"csi_mounter_test.go",
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"csi_plugin_test.go",
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"csi_test.go",
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"csi_util_test.go",
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"expander_test.go",
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],
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@ -607,8 +607,18 @@ func (p *csiPlugin) CanAttach(spec *volume.Spec) (bool, error) {
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return !skipAttach, nil
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}
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// TODO (#75352) add proper logic to determine device moutability by inspecting the spec.
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// CanDeviceMount returns true if the spec supports device mount
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func (p *csiPlugin) CanDeviceMount(spec *volume.Spec) (bool, error) {
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driverMode, err := p.getDriverMode(spec)
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if err != nil {
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return false, err
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}
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if driverMode == ephemeralDriverMode {
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klog.V(5).Info(log("plugin.CanDeviceMount skipped ephemeral mode detected for spec %v", spec.Name()))
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return false, nil
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}
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return true, nil
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}
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@ -958,6 +958,118 @@ func TestPluginFindAttachablePlugin(t *testing.T) {
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}
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}
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func TestPluginCanDeviceMount(t *testing.T) {
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defer utilfeaturetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIInlineVolume, true)()
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tests := []struct {
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name string
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driverName string
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spec *volume.Spec
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canDeviceMount bool
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shouldFail bool
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}{
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{
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name: "non device mountable inline",
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driverName: "inline-driver",
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spec: volume.NewSpecFromVolume(makeTestVol("test-vol", "inline-driver")),
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canDeviceMount: false,
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},
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{
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name: "device mountable PV",
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driverName: "device-mountable-pv",
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spec: volume.NewSpecFromPersistentVolume(makeTestPV("test-vol", 20, "device-mountable-pv", testVol), true),
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canDeviceMount: true,
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},
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{
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name: "incomplete spec",
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driverName: "device-unmountable",
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spec: &volume.Spec{ReadOnly: true},
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canDeviceMount: false,
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shouldFail: true,
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},
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{
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name: "missing spec",
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driverName: "device-unmountable",
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canDeviceMount: false,
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shouldFail: true,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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plug, tmpDir := newTestPlugin(t, nil)
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defer os.RemoveAll(tmpDir)
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pluginCanDeviceMount, err := plug.CanDeviceMount(test.spec)
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if err != nil && !test.shouldFail {
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t.Fatalf("unexpected error in plug.CanDeviceMount: %s", err)
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}
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if pluginCanDeviceMount != test.canDeviceMount {
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t.Fatalf("expecting plugin.CanAttach %t got %t", test.canDeviceMount, pluginCanDeviceMount)
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}
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})
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}
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}
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func TestPluginFindDeviceMountablePluginBySpec(t *testing.T) {
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defer utilfeaturetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIInlineVolume, true)()
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tests := []struct {
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name string
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driverName string
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spec *volume.Spec
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canDeviceMount bool
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shouldFail bool
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}{
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{
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name: "non device mountable inline",
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driverName: "inline-driver",
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spec: volume.NewSpecFromVolume(makeTestVol("test-vol", "inline-driver")),
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canDeviceMount: false,
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},
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{
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name: "device mountable PV",
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driverName: "device-mountable-pv",
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spec: volume.NewSpecFromPersistentVolume(makeTestPV("test-vol", 20, "device-mountable-pv", testVol), true),
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canDeviceMount: true,
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},
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{
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name: "incomplete spec",
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driverName: "device-unmountable",
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spec: &volume.Spec{ReadOnly: true},
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canDeviceMount: false,
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shouldFail: true,
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},
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{
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name: "missing spec",
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driverName: "device-unmountable",
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canDeviceMount: false,
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shouldFail: true,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("csi-test")
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if err != nil {
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t.Fatalf("can't create temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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client := fakeclient.NewSimpleClientset()
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host := volumetest.NewFakeVolumeHost(tmpDir, client, nil)
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plugMgr := &volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, host)
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plug, err := plugMgr.FindDeviceMountablePluginBySpec(test.spec)
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if err != nil && !test.shouldFail {
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t.Fatalf("unexpected error in plugMgr.FindDeviceMountablePluginBySpec: %s", err)
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}
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if (plug != nil) != test.canDeviceMount {
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t.Fatalf("expecting deviceMountablePlugin, but got nil")
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}
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})
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}
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}
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func TestPluginNewBlockMapper(t *testing.T) {
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defer utilfeaturetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIBlockVolume, true)()
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425
pkg/volume/csi/csi_test.go
Normal file
425
pkg/volume/csi/csi_test.go
Normal file
@ -0,0 +1,425 @@
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/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package csi
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import (
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"fmt"
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"math/rand"
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"os"
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"path"
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"path/filepath"
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"testing"
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"time"
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api "k8s.io/api/core/v1"
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storage "k8s.io/api/storage/v1"
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meta "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/apimachinery/pkg/watch"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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utilfeaturetesting "k8s.io/apiserver/pkg/util/feature/testing"
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"k8s.io/client-go/informers"
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fakeclient "k8s.io/client-go/kubernetes/fake"
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utiltesting "k8s.io/client-go/util/testing"
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/volume"
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volumetest "k8s.io/kubernetes/pkg/volume/testing"
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)
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// TestCSI_VolumeAll runs a close approximation of volume workflow
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// based on operations from the volume manager/reconciler/operation executor
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func TestCSI_VolumeAll(t *testing.T) {
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defer utilfeaturetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIInlineVolume, true)()
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tests := []struct {
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name string
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specName string
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driver string
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volName string
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specFunc func(specName, driver, volName string) *volume.Spec
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podFunc func() *api.Pod
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isInline bool
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shouldFail bool
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}{
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{
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name: "PersistentVolume",
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specName: "pv2",
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driver: "simple-driver",
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volName: "vol2",
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specFunc: func(specName, driver, volName string) *volume.Spec {
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return volume.NewSpecFromPersistentVolume(makeTestPV(specName, 20, driver, volName), false)
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},
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podFunc: func() *api.Pod {
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podUID := types.UID(fmt.Sprintf("%08X", rand.Uint64()))
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return &api.Pod{ObjectMeta: meta.ObjectMeta{UID: podUID, Namespace: testns}}
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},
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},
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{
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name: "ephermeral inline",
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driver: "inline-driver-1",
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volName: "test.vol2",
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specFunc: func(specName, driver, volName string) *volume.Spec {
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return volume.NewSpecFromVolume(makeTestVol(specName, driver))
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},
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podFunc: func() *api.Pod {
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podUID := types.UID(fmt.Sprintf("%08X", rand.Uint64()))
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return &api.Pod{ObjectMeta: meta.ObjectMeta{UID: podUID, Namespace: testns}}
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},
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isInline: true,
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},
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{
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name: "missing spec",
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specName: "pv2",
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driver: "simple-driver",
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volName: "vol2",
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specFunc: func(specName, driver, volName string) *volume.Spec {
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return nil
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},
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podFunc: func() *api.Pod {
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podUID := types.UID(fmt.Sprintf("%08X", rand.Uint64()))
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return &api.Pod{ObjectMeta: meta.ObjectMeta{UID: podUID, Namespace: testns}}
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},
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shouldFail: true,
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},
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{
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name: "incompete spec",
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specName: "pv2",
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driver: "simple-driver",
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volName: "vol2",
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specFunc: func(specName, driver, volName string) *volume.Spec {
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return &volume.Spec{ReadOnly: true}
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},
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podFunc: func() *api.Pod {
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podUID := types.UID(fmt.Sprintf("%08X", rand.Uint64()))
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return &api.Pod{ObjectMeta: meta.ObjectMeta{UID: podUID, Namespace: testns}}
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},
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shouldFail: true,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("csi-test")
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if err != nil {
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t.Fatalf("can't create temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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client := fakeclient.NewSimpleClientset()
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fakeWatcher := watch.NewRaceFreeFake()
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factory := informers.NewSharedInformerFactory(client, csiResyncPeriod)
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go factory.Start(wait.NeverStop)
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host := volumetest.NewFakeVolumeHostWithCSINodeName(
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tmpDir,
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client,
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nil,
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"csi-node",
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factory.Storage().V1beta1().CSIDrivers().Lister(),
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)
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plugMgr := &volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, host)
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csiClient := setupClient(t, true)
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volSpec := test.specFunc(test.specName, test.driver, test.volName)
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pod := test.podFunc()
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attachName := getAttachmentName(test.volName, test.driver, string(host.GetNodeName()))
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t.Log("csiTest.VolumeAll starting...")
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// *************** Attach/Mount volume resources ****************//
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// attach volume
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t.Log("csiTest.VolumeAll Attaching volume...")
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attachPlug, err := plugMgr.FindAttachablePluginBySpec(volSpec)
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if err != nil {
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if !test.shouldFail {
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t.Fatalf("csiTest.VolumeAll PluginManager.FindAttachablePluginBySpec failed: %v", err)
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} else {
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t.Log("csiTest.VolumeAll failed: ", err)
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return
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}
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}
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if test.isInline && attachPlug != nil {
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t.Fatal("csiTest.VolumeAll AttachablePlugin found with ephemeral volume")
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}
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if !test.isInline && attachPlug == nil {
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t.Fatal("csiTest.VolumeAll AttachablePlugin not found with PV")
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}
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var devicePath string
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if attachPlug != nil {
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t.Log("csiTest.VolumeAll attacher.Attach starting")
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var volAttacher volume.Attacher
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volAttacher, err := attachPlug.NewAttacher()
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if err != nil {
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t.Fatal("csiTest.VolumeAll failed to create new attacher: ", err)
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}
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// creates VolumeAttachment and blocks until it is marked attached (done by external attacher)
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go func(spec *volume.Spec, nodeName types.NodeName) {
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attachID, err := volAttacher.Attach(spec, nodeName)
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if err != nil {
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t.Fatalf("csiTest.VolumeAll attacher.Attach failed: %s", err)
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}
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t.Logf("csiTest.VolumeAll got attachID %s", attachID)
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|
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}(volSpec, host.GetNodeName())
|
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|
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// Simulates external-attacher and marks VolumeAttachment.Status.Attached = true
|
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markVolumeAttached(t, host.GetKubeClient(), fakeWatcher, attachName, storage.VolumeAttachmentStatus{Attached: true})
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|
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devicePath, err = volAttacher.WaitForAttach(volSpec, "", pod, 500*time.Millisecond)
|
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if err != nil {
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t.Fatal("csiTest.VolumeAll attacher.WaitForAttach failed:", err)
|
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}
|
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|
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if devicePath != attachName {
|
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t.Fatalf("csiTest.VolumeAll attacher.WaitForAttach got unexpected value %s", devicePath)
|
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}
|
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|
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t.Log("csiTest.VolumeAll attacher.WaitForAttach succeeded OK, attachment ID:", devicePath)
|
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|
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} else {
|
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t.Log("csiTest.VolumeAll volume attacher not found, skipping attachment")
|
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}
|
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|
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// Mount Device
|
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t.Log("csiTest.VolumeAll Mouting device...")
|
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devicePlug, err := plugMgr.FindDeviceMountablePluginBySpec(volSpec)
|
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if err != nil {
|
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t.Fatalf("csiTest.VolumeAll PluginManager.FindDeviceMountablePluginBySpec failed: %v", err)
|
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}
|
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|
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if test.isInline && devicePlug != nil {
|
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t.Fatal("csiTest.VolumeAll DeviceMountablePlugin found with ephemeral volume")
|
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}
|
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if !test.isInline && devicePlug == nil {
|
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t.Fatal("csiTest.VolumeAll DeviceMountablePlugin not found with PV")
|
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}
|
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|
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var devMounter volume.DeviceMounter
|
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if devicePlug != nil {
|
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devMounter, err = devicePlug.NewDeviceMounter()
|
||||
if err != nil {
|
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t.Fatal("csiTest.VolumeAll failed to create new device mounter: ", err)
|
||||
}
|
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}
|
||||
|
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if devMounter != nil {
|
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csiDevMounter := devMounter.(*csiAttacher)
|
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csiDevMounter.csiClient = csiClient
|
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devMountPath, err := csiDevMounter.GetDeviceMountPath(volSpec)
|
||||
if err != nil {
|
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t.Fatalf("csiTest.VolumeAll deviceMounter.GetdeviceMountPath failed %s", err)
|
||||
}
|
||||
if err := csiDevMounter.MountDevice(volSpec, devicePath, devMountPath); err != nil {
|
||||
t.Fatalf("csiTest.VolumeAll deviceMounter.MountDevice failed: %v", err)
|
||||
}
|
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t.Log("csiTest.VolumeAll device mounted at path:", devMountPath)
|
||||
} else {
|
||||
t.Log("csiTest.VolumeAll DeviceMountablePlugin not found, skipping deviceMounter.MountDevice")
|
||||
}
|
||||
|
||||
// mount volume
|
||||
t.Log("csiTest.VolumeAll Mouting volume...")
|
||||
volPlug, err := plugMgr.FindPluginBySpec(volSpec)
|
||||
if err != nil || volPlug == nil {
|
||||
t.Fatalf("csiTest.VolumeAll PluginMgr.FindPluginBySpec failed: %v", err)
|
||||
}
|
||||
|
||||
if volPlug == nil {
|
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t.Fatalf("csiTest.VolumeAll volumePlugin is nil")
|
||||
}
|
||||
|
||||
if !volPlug.CanSupport(volSpec) {
|
||||
t.Fatal("csiTest.VolumeAll volumePlugin.CanSupport returned false")
|
||||
}
|
||||
|
||||
mounter, err := volPlug.NewMounter(volSpec, pod, volume.VolumeOptions{})
|
||||
if err != nil || mounter == nil {
|
||||
t.Fatalf("csiTest.VolumeAll volPlugin.NewMounter is nil or error: %s", err)
|
||||
}
|
||||
|
||||
if err := mounter.CanMount(); err != nil {
|
||||
t.Fatal("csiTest.VolumeAll mounter.CanMount failed, skipping mount")
|
||||
}
|
||||
|
||||
var fsGroup *int64
|
||||
if pod.Spec.SecurityContext != nil && pod.Spec.SecurityContext.FSGroup != nil {
|
||||
fsGroup = pod.Spec.SecurityContext.FSGroup
|
||||
}
|
||||
|
||||
csiMounter := mounter.(*csiMountMgr)
|
||||
csiMounter.csiClient = csiClient
|
||||
if err := csiMounter.SetUp(fsGroup); err != nil {
|
||||
t.Fatalf("csiTest.VolumeAll mounter.Setup(fsGroup) failed: %s", err)
|
||||
}
|
||||
t.Log("csiTest.VolumeAll mounter.Setup(fsGroup) done OK")
|
||||
|
||||
dataFile := filepath.Join(path.Dir(mounter.GetPath()), volDataFileName)
|
||||
if _, err := os.Stat(dataFile); err != nil {
|
||||
t.Fatalf("csiTest.VolumeAll meatadata JSON file not found: %s", dataFile)
|
||||
}
|
||||
t.Log("csiTest.VolumeAll JSON datafile generated OK:", dataFile)
|
||||
|
||||
// ******** Volume Reconstruction ************* //
|
||||
volPath := path.Dir(csiMounter.GetPath())
|
||||
t.Log("csiTest.VolumeAll entering plugin.ConstructVolumeSpec for path", volPath)
|
||||
spec, err := volPlug.ConstructVolumeSpec(test.volName, volPath)
|
||||
if err != nil {
|
||||
t.Fatalf("csiTest.VolumeAll plugin.ConstructVolumeSpec failed: %s", err)
|
||||
} else {
|
||||
if spec == nil {
|
||||
t.Fatalf("csiTest.VolumeAll plugin.ConstructVolumeSpec returned nil spec")
|
||||
} else {
|
||||
volSpec = spec
|
||||
|
||||
if test.isInline {
|
||||
if volSpec.Volume == nil || volSpec.Volume.CSI == nil {
|
||||
t.Fatal("csiTest.VolumeAll reconstruction of ephemeral volumeSpec missing CSI Volume source")
|
||||
}
|
||||
if volSpec.Volume.CSI.Driver == "" {
|
||||
t.Fatal("csiTest.VolumeAll reconstruction ephemral volume missing driver name")
|
||||
}
|
||||
} else {
|
||||
if volSpec.PersistentVolume == nil || volSpec.PersistentVolume.Spec.CSI == nil {
|
||||
t.Fatal("csiTest.VolumeAll reconstruction of volumeSpec missing CSI PersistentVolume source")
|
||||
}
|
||||
csi := volSpec.PersistentVolume.Spec.CSI
|
||||
if csi.Driver == "" {
|
||||
t.Fatal("csiTest.VolumeAll reconstruction of PV missing driver name")
|
||||
}
|
||||
if csi.VolumeHandle == "" {
|
||||
t.Fatal("csiTest.VolumeAll reconstruction of PV missing volume handle")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ************* Teardown everything **************** //
|
||||
t.Log("csiTest.VolumeAll Tearing down...")
|
||||
// unmount volume
|
||||
t.Log("csiTest.VolumeAll Unmouting volume...")
|
||||
volPlug, err = plugMgr.FindPluginBySpec(volSpec)
|
||||
if err != nil || volPlug == nil {
|
||||
t.Fatalf("csiTest.VolumeAll PluginMgr.FindPluginBySpec failed: %v", err)
|
||||
}
|
||||
if volPlug == nil {
|
||||
t.Fatalf("csiTest.VolumeAll volumePlugin is nil")
|
||||
}
|
||||
mounter, err = volPlug.NewMounter(volSpec, pod, volume.VolumeOptions{})
|
||||
if err != nil || mounter == nil {
|
||||
t.Fatalf("csiTest.VolumeAll volPlugin.NewMounter is nil or error: %s", err)
|
||||
}
|
||||
|
||||
unmounter, err := volPlug.NewUnmounter(test.specName, pod.GetUID())
|
||||
if err != nil {
|
||||
t.Fatal("csiTest.VolumeAll volumePlugin.NewUnmounter failed:", err)
|
||||
}
|
||||
csiUnmounter := unmounter.(*csiMountMgr)
|
||||
csiUnmounter.csiClient = csiClient
|
||||
|
||||
if err := csiUnmounter.TearDownAt(mounter.GetPath()); err != nil {
|
||||
t.Fatal("csiTest.VolumeAll unmounter.TearDownAt failed:", err)
|
||||
}
|
||||
t.Log("csiTest.VolumeAll unmounter.TearDownAt done OK for dir:", mounter.GetPath())
|
||||
|
||||
// unmount device
|
||||
t.Log("csiTest.VolumeAll Unmouting device...")
|
||||
devicePlug, err = plugMgr.FindDeviceMountablePluginBySpec(volSpec)
|
||||
if err != nil {
|
||||
t.Fatalf("csiTest.VolumeAll failed to create mountable device plugin: %s", err)
|
||||
}
|
||||
|
||||
if test.isInline && devicePlug != nil {
|
||||
t.Fatal("csiTest.VolumeAll DeviceMountablePlugin found with ephemeral volume")
|
||||
}
|
||||
if !test.isInline && devicePlug == nil {
|
||||
t.Fatal("csiTest.VolumeAll DeviceMountablePlugin not found with PV")
|
||||
}
|
||||
|
||||
var devUnmounter volume.DeviceUnmounter
|
||||
if devicePlug != nil {
|
||||
t.Log("csiTest.VolumeAll found DeviceMountablePlugin, entering device unmouting ...")
|
||||
devMounter, err = devicePlug.NewDeviceMounter()
|
||||
if err != nil {
|
||||
t.Fatal("csiTest.VolumeAll failed to create new device mounter: ", err)
|
||||
}
|
||||
devUnmounter, err = devicePlug.NewDeviceUnmounter()
|
||||
if err != nil {
|
||||
t.Fatal("csiTest.VolumeAll failed to create new device unmounter: ", err)
|
||||
}
|
||||
|
||||
if devMounter != nil && devUnmounter != nil {
|
||||
csiDevMounter := devMounter.(*csiAttacher)
|
||||
csiDevUnmounter := devUnmounter.(*csiAttacher)
|
||||
csiDevUnmounter.csiClient = csiClient
|
||||
|
||||
devMountPath, err := csiDevMounter.GetDeviceMountPath(volSpec)
|
||||
if err != nil {
|
||||
t.Fatalf("csiTest.VolumeAll deviceMounter.GetdeviceMountPath failed %s", err)
|
||||
}
|
||||
if err := csiDevUnmounter.UnmountDevice(devMountPath); err != nil {
|
||||
t.Fatalf("csiTest.VolumeAll deviceMounter.UnmountDevice failed: %s", err)
|
||||
}
|
||||
t.Log("csiTest.VolumeAll deviceUmounter.UnmountDevice done OK for path", devMountPath)
|
||||
}
|
||||
} else {
|
||||
t.Log("csiTest.VolumeAll DeviceMountablePluginBySpec did not find a plugin, skipping unmounting.")
|
||||
}
|
||||
|
||||
// detach volume
|
||||
t.Log("csiTest.VolumeAll Detaching volume...")
|
||||
attachPlug, err = plugMgr.FindAttachablePluginBySpec(volSpec)
|
||||
if err != nil {
|
||||
t.Fatalf("csiTest.VolumeAll PluginManager.FindAttachablePluginBySpec failed: %v", err)
|
||||
}
|
||||
|
||||
if test.isInline && attachPlug != nil {
|
||||
t.Fatal("csiTest.VolumeAll AttachablePlugin found with ephemeral volume")
|
||||
}
|
||||
if !test.isInline && attachPlug == nil {
|
||||
t.Fatal("csiTest.VolumeAll AttachablePlugin not found with PV")
|
||||
}
|
||||
|
||||
if attachPlug != nil {
|
||||
volDetacher, err := attachPlug.NewDetacher()
|
||||
if err != nil {
|
||||
t.Fatal("csiTest.VolumeAll failed to create new detacher: ", err)
|
||||
}
|
||||
|
||||
t.Log("csiTest.VolumeAll preparing detacher.Detach...")
|
||||
volName, err := volPlug.GetVolumeName(volSpec)
|
||||
if err != nil {
|
||||
t.Fatal("csiTest.VolumeAll volumePlugin.GetVolumeName failed:", err)
|
||||
}
|
||||
csiDetacher := volDetacher.(*csiAttacher)
|
||||
csiDetacher.csiClient = csiClient
|
||||
if err := csiDetacher.Detach(volName, host.GetNodeName()); err != nil {
|
||||
t.Fatal("csiTest.VolumeAll detacher.Detach failed:", err)
|
||||
}
|
||||
t.Log("csiTest.VolumeAll detacher.Detach succeeded for volume", volName)
|
||||
|
||||
} else {
|
||||
t.Log("csiTest.VolumeAll attachable plugin not found for plugin.Detach call, skipping")
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user