Bugfix: csi raw block that does not need attach mounted failed

pkg/volume/csi/csi_block.go

@@ -104,9 +104,10 @@ func (m *csiBlockMapper) stageVolumeForBlock(
 		klog.Infof(log("blockMapper.stageVolumeForBlock STAGE_UNSTAGE_VOLUME capability not set. Skipping MountDevice..."))
 		return "", nil
 	}
-
-	publishVolumeInfo := attachment.Status.AttachmentMetadata
-
+	publishVolumeInfo := map[string]string{}
+	if attachment != nil {
+		publishVolumeInfo = attachment.Status.AttachmentMetadata
+	}
 	nodeStageSecrets := map[string]string{}
 	if csiSource.NodeStageSecretRef != nil {
 		nodeStageSecrets, err = getCredentialsFromSecret(m.k8s, csiSource.NodeStageSecretRef)
@@ -155,7 +156,10 @@ func (m *csiBlockMapper) publishVolumeForBlock(
 ) (string, error) {
 	klog.V(4).Infof(log("blockMapper.publishVolumeForBlock called"))
 
-	publishVolumeInfo := attachment.Status.AttachmentMetadata
+	publishVolumeInfo := map[string]string{}
+	if attachment != nil {
+		publishVolumeInfo = attachment.Status.AttachmentMetadata
+	}
 
 	nodePublishSecrets := map[string]string{}
 	var err error
@@ -223,18 +227,23 @@ func (m *csiBlockMapper) SetUpDevice() (string, error) {
 		return "", err
 	}
 
-	// Search for attachment by VolumeAttachment.Spec.Source.PersistentVolumeName
-	nodeName := string(m.plugin.host.GetNodeName())
-	attachID := getAttachmentName(csiSource.VolumeHandle, csiSource.Driver, nodeName)
-	attachment, err := m.k8s.StorageV1().VolumeAttachments().Get(attachID, meta.GetOptions{})
+	driverName := csiSource.Driver
+	skip, err := m.plugin.skipAttach(driverName)
 	if err != nil {
-		klog.Error(log("blockMapper.SetupDevice failed to get volume attachment [id=%v]: %v", attachID, err))
+		klog.Error(log("blockMapper.SetupDevice failed to check CSIDriver for %s: %v", driverName, err))
 		return "", err
 	}
 
-	if attachment == nil {
-		klog.Error(log("blockMapper.SetupDevice unable to find VolumeAttachment [id=%s]", attachID))
-		return "", errors.New("no existing VolumeAttachment found")
+	var attachment *storage.VolumeAttachment
+	if !skip {
+		// Search for attachment by VolumeAttachment.Spec.Source.PersistentVolumeName
+		nodeName := string(m.plugin.host.GetNodeName())
+		attachID := getAttachmentName(csiSource.VolumeHandle, csiSource.Driver, nodeName)
+		attachment, err = m.k8s.StorageV1().VolumeAttachments().Get(attachID, meta.GetOptions{})
+		if err != nil {
+			klog.Error(log("blockMapper.SetupDevice failed to get volume attachment [id=%v]: %v", attachID, err))
+			return "", err
+		}
 	}
 
 	//TODO (vladimirvivien) implement better AccessModes mapping between k8s and CSI

pkg/volume/csi/csi_block_test.go

@@ -23,6 +23,7 @@ import (
 	"testing"
 
 	api "k8s.io/api/core/v1"
+	"k8s.io/api/storage/v1beta1"
 	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	fakeclient "k8s.io/client-go/kubernetes/fake"
@@ -354,6 +355,88 @@ func TestBlockMapperMapDevice(t *testing.T) {
 	}
 }
 
+func TestBlockMapperMapDeviceNotSupportAttach(t *testing.T) {
+	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIBlockVolume, true)()
+	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIDriverRegistry, true)()
+	plug, tmpDir := newTestPlugin(t, nil)
+	defer os.RemoveAll(tmpDir)
+	fakeClient := fakeclient.NewSimpleClientset()
+	attachRequired := false
+	fakeDriver := &v1beta1.CSIDriver{
+		ObjectMeta: meta.ObjectMeta{
+			Name: testDriver,
+		},
+		Spec: v1beta1.CSIDriverSpec{
+			AttachRequired: &attachRequired,
+		},
+	}
+	_, err := plug.host.GetKubeClient().StorageV1beta1().CSIDrivers().Create(fakeDriver)
+	if err != nil {
+		t.Fatalf("Failed to create a fakeDriver: %v", err)
+	}
+
+	host := volumetest.NewFakeVolumeHostWithCSINodeName(
+		tmpDir,
+		fakeClient,
+		nil,
+		"fakeNode",
+		nil,
+	)
+	plug.host = host
+	csiMapper, _, _, err := prepareBlockMapperTest(plug, "test-pv", t)
+	if err != nil {
+		t.Fatalf("Failed to make a new Mapper: %v", err)
+	}
+	csiMapper.csiClient = setupClient(t, true)
+	devicePath, err := csiMapper.SetUpDevice()
+	if err != nil {
+		t.Fatalf("mapper failed to SetupDevice: %v", err)
+	}
+	globalMapPath, err := csiMapper.GetGlobalMapPath(csiMapper.spec)
+	if err != nil {
+		t.Fatalf("mapper failed to GetGlobalMapPath: %v", err)
+	}
+
+	// Actual SetupDevice should create a symlink to or a bind mout of device in devicePath.
+	// Create dummy file there before calling MapDevice to test it properly.
+	fd, err := os.Create(devicePath)
+	if err != nil {
+		t.Fatalf("mapper failed to create dummy file in devicePath: %v", err)
+	}
+	if err := fd.Close(); err != nil {
+		t.Fatalf("mapper failed to close dummy file in devicePath: %v", err)
+	}
+
+	// Map device to global and pod device map path
+	volumeMapPath, volName := csiMapper.GetPodDeviceMapPath()
+	err = csiMapper.MapDevice(devicePath, globalMapPath, volumeMapPath, volName, csiMapper.podUID)
+	if err != nil {
+		t.Fatalf("mapper failed to GetGlobalMapPath: %v", err)
+	}
+
+	// Check if symlink {globalMapPath}/{podUID} exists
+	globalMapFilePath := filepath.Join(globalMapPath, string(csiMapper.podUID))
+	if _, err := os.Stat(globalMapFilePath); err != nil {
+		if os.IsNotExist(err) {
+			t.Errorf("mapper.MapDevice failed, symlink in globalMapPath not created: %v", err)
+			t.Errorf("mapper.MapDevice devicePath:%v, globalMapPath: %v, globalMapFilePath: %v",
+				devicePath, globalMapPath, globalMapFilePath)
+		} else {
+			t.Errorf("mapper.MapDevice failed: %v", err)
+		}
+	}
+
+	// Check if symlink {volumeMapPath}/{volName} exists
+	volumeMapFilePath := filepath.Join(volumeMapPath, volName)
+	if _, err := os.Stat(volumeMapFilePath); err != nil {
+		if os.IsNotExist(err) {
+			t.Errorf("mapper.MapDevice failed, symlink in volumeMapPath not created: %v", err)
+		} else {
+			t.Errorf("mapper.MapDevice failed: %v", err)
+		}
+	}
+}
+
 func TestBlockMapperTearDownDevice(t *testing.T) {
 	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.CSIBlockVolume, true)()