vendor files

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/BUILD

@@ -0,0 +1,78 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "attacher.go",
+        "azure_common.go",
+        "azure_common_unsupported.go",
+        "azure_dd.go",
+        "azure_mounter.go",
+        "azure_provision.go",
+    ] + select({
+        "@io_bazel_rules_go//go/platform:linux_amd64": [
+            "azure_common_linux.go",
+        ],
+        "@io_bazel_rules_go//go/platform:windows_amd64": [
+            "azure_common_windows.go",
+        ],
+        "//conditions:default": [],
+    }),
+    importpath = "k8s.io/kubernetes/pkg/volume/azure_dd",
+    deps = [
+        "//pkg/apis/core:go_default_library",
+        "//pkg/cloudprovider:go_default_library",
+        "//pkg/cloudprovider/providers/azure:go_default_library",
+        "//pkg/util/keymutex:go_default_library",
+        "//pkg/util/mount:go_default_library",
+        "//pkg/util/strings:go_default_library",
+        "//pkg/volume:go_default_library",
+        "//pkg/volume/util:go_default_library",
+        "//pkg/volume/util/volumehelper:go_default_library",
+        "//vendor/github.com/Azure/azure-sdk-for-go/arm/compute:go_default_library",
+        "//vendor/github.com/Azure/azure-sdk-for-go/arm/storage:go_default_library",
+        "//vendor/github.com/golang/glog:go_default_library",
+        "//vendor/k8s.io/api/core/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/resource:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/types:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = [
+        "azure_common_test.go",
+        "azure_dd_test.go",
+    ],
+    importpath = "k8s.io/kubernetes/pkg/volume/azure_dd",
+    library = ":go_default_library",
+    deps = [
+        "//pkg/util/mount:go_default_library",
+        "//pkg/volume:go_default_library",
+        "//pkg/volume/testing:go_default_library",
+        "//vendor/k8s.io/api/core/v1:go_default_library",
+        "//vendor/k8s.io/client-go/util/testing:go_default_library",
+    ],
+)

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/OWNERS

@@ -0,0 +1,11 @@
+approvers:
+- brendandburns
+- rootfs
+reviewers:
+- rootfs
+- brendandburns
+- saad-ali
+- jsafrane
+- jingxu97
+- msau42
+- andyzhangx

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/attacher.go

@@ -0,0 +1,294 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/Azure/azure-sdk-for-go/arm/compute"
+	"github.com/golang/glog"
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/kubernetes/pkg/cloudprovider"
+	"k8s.io/kubernetes/pkg/cloudprovider/providers/azure"
+	"k8s.io/kubernetes/pkg/util/keymutex"
+	"k8s.io/kubernetes/pkg/util/mount"
+	"k8s.io/kubernetes/pkg/volume"
+	volumeutil "k8s.io/kubernetes/pkg/volume/util"
+	"k8s.io/kubernetes/pkg/volume/util/volumehelper"
+)
+
+type azureDiskDetacher struct {
+	plugin *azureDataDiskPlugin
+	cloud  *azure.Cloud
+}
+
+type azureDiskAttacher struct {
+	plugin *azureDataDiskPlugin
+	cloud  *azure.Cloud
+}
+
+var _ volume.Attacher = &azureDiskAttacher{}
+var _ volume.Detacher = &azureDiskDetacher{}
+
+// acquire lock to get an lun number
+var getLunMutex = keymutex.NewKeyMutex()
+
+// Attach attaches a volume.Spec to an Azure VM referenced by NodeName, returning the disk's LUN
+func (a *azureDiskAttacher) Attach(spec *volume.Spec, nodeName types.NodeName) (string, error) {
+	volumeSource, err := getVolumeSource(spec)
+	if err != nil {
+		glog.Warningf("failed to get azure disk spec")
+		return "", err
+	}
+
+	instanceid, err := a.cloud.InstanceID(nodeName)
+	if err != nil {
+		glog.Warningf("failed to get azure instance id")
+		return "", fmt.Errorf("failed to get azure instance id for node %q", nodeName)
+	}
+	if ind := strings.LastIndex(instanceid, "/"); ind >= 0 {
+		instanceid = instanceid[(ind + 1):]
+	}
+
+	diskController, err := getDiskController(a.plugin.host)
+	if err != nil {
+		return "", err
+	}
+
+	lun, err := diskController.GetDiskLun(volumeSource.DiskName, volumeSource.DataDiskURI, nodeName)
+	if err == cloudprovider.InstanceNotFound {
+		// Log error and continue with attach
+		glog.Warningf(
+			"Error checking if volume is already attached to current node (%q). Will continue and try attach anyway. err=%v",
+			instanceid, err)
+	}
+
+	if err == nil {
+		// Volume is already attached to node.
+		glog.V(4).Infof("Attach operation is successful. volume %q is already attached to node %q at lun %d.", volumeSource.DiskName, instanceid, lun)
+	} else {
+		glog.V(4).Infof("GetDiskLun returned: %v. Initiating attaching volume %q to node %q.", err, volumeSource.DataDiskURI, nodeName)
+		getLunMutex.LockKey(instanceid)
+		defer getLunMutex.UnlockKey(instanceid)
+
+		lun, err = diskController.GetNextDiskLun(nodeName)
+		if err != nil {
+			glog.Warningf("no LUN available for instance %q", nodeName)
+			return "", fmt.Errorf("all LUNs are used, cannot attach volume %q to instance %q", volumeSource.DiskName, instanceid)
+		}
+		glog.V(4).Infof("Trying to attach volume %q lun %d to node %q.", volumeSource.DataDiskURI, lun, nodeName)
+		isManagedDisk := (*volumeSource.Kind == v1.AzureManagedDisk)
+		err = diskController.AttachDisk(isManagedDisk, volumeSource.DiskName, volumeSource.DataDiskURI, nodeName, lun, compute.CachingTypes(*volumeSource.CachingMode))
+		if err == nil {
+			glog.V(4).Infof("Attach operation successful: volume %q attached to node %q.", volumeSource.DataDiskURI, nodeName)
+		} else {
+			glog.V(2).Infof("Attach volume %q to instance %q failed with %v", volumeSource.DataDiskURI, instanceid, err)
+			return "", fmt.Errorf("Attach volume %q to instance %q failed with %v", volumeSource.DiskName, instanceid, err)
+		}
+	}
+
+	return strconv.Itoa(int(lun)), err
+}
+
+func (a *azureDiskAttacher) VolumesAreAttached(specs []*volume.Spec, nodeName types.NodeName) (map[*volume.Spec]bool, error) {
+	volumesAttachedCheck := make(map[*volume.Spec]bool)
+	volumeSpecMap := make(map[string]*volume.Spec)
+	volumeIDList := []string{}
+	for _, spec := range specs {
+		volumeSource, err := getVolumeSource(spec)
+		if err != nil {
+			glog.Errorf("azureDisk - Error getting volume (%q) source : %v", spec.Name(), err)
+			continue
+		}
+
+		volumeIDList = append(volumeIDList, volumeSource.DiskName)
+		volumesAttachedCheck[spec] = true
+		volumeSpecMap[volumeSource.DiskName] = spec
+	}
+
+	diskController, err := getDiskController(a.plugin.host)
+	if err != nil {
+		return nil, err
+	}
+	attachedResult, err := diskController.DisksAreAttached(volumeIDList, nodeName)
+	if err != nil {
+		// Log error and continue with attach
+		glog.Errorf(
+			"azureDisk - Error checking if volumes (%v) are attached to current node (%q). err=%v",
+			volumeIDList, nodeName, err)
+		return volumesAttachedCheck, err
+	}
+
+	for volumeID, attached := range attachedResult {
+		if !attached {
+			spec := volumeSpecMap[volumeID]
+			volumesAttachedCheck[spec] = false
+			glog.V(2).Infof("azureDisk - VolumesAreAttached: check volume %q (specName: %q) is no longer attached", volumeID, spec.Name())
+		}
+	}
+	return volumesAttachedCheck, nil
+}
+
+func (a *azureDiskAttacher) WaitForAttach(spec *volume.Spec, devicePath string, _ *v1.Pod, timeout time.Duration) (string, error) {
+	var err error
+	lun, err := strconv.Atoi(devicePath)
+	if err != nil {
+		return "", fmt.Errorf("azureDisk - Wait for attach expect device path as a lun number, instead got: %s", devicePath)
+	}
+
+	volumeSource, err := getVolumeSource(spec)
+	if err != nil {
+		return "", err
+	}
+
+	exec := a.plugin.host.GetExec(a.plugin.GetPluginName())
+
+	io := &osIOHandler{}
+	scsiHostRescan(io, exec)
+
+	diskName := volumeSource.DiskName
+	nodeName := a.plugin.host.GetHostName()
+	newDevicePath := ""
+
+	err = wait.Poll(1*time.Second, timeout, func() (bool, error) {
+		if newDevicePath, err = findDiskByLun(lun, io, exec); err != nil {
+			return false, fmt.Errorf("azureDisk - WaitForAttach ticker failed node (%s) disk (%s) lun(%v) err(%s)", nodeName, diskName, lun, err)
+		}
+
+		// did we find it?
+		if newDevicePath != "" {
+			// the curent sequence k8s uses for unformated disk (check-disk, mount, fail, mkfs.extX) hangs on
+			// Azure Managed disk scsi interface. this is a hack and will be replaced once we identify and solve
+			// the root case on Azure.
+			formatIfNotFormatted(newDevicePath, *volumeSource.FSType, exec)
+			return true, nil
+		}
+
+		return false, fmt.Errorf("azureDisk - WaitForAttach failed within timeout node (%s) diskId:(%s) lun:(%v)", nodeName, diskName, lun)
+	})
+
+	return newDevicePath, err
+}
+
+// to avoid name conflicts (similar *.vhd name)
+// we use hash diskUri and we use it as device mount target.
+// this is generalized for both managed and blob disks
+// we also prefix the hash with m/b based on disk kind
+func (a *azureDiskAttacher) GetDeviceMountPath(spec *volume.Spec) (string, error) {
+	volumeSource, err := getVolumeSource(spec)
+	if err != nil {
+		return "", err
+	}
+
+	if volumeSource.Kind == nil { // this spec was constructed from info on the node
+		pdPath := path.Join(a.plugin.host.GetPluginDir(azureDataDiskPluginName), mount.MountsInGlobalPDPath, volumeSource.DataDiskURI)
+		return pdPath, nil
+	}
+
+	isManagedDisk := (*volumeSource.Kind == v1.AzureManagedDisk)
+	return makeGlobalPDPath(a.plugin.host, volumeSource.DataDiskURI, isManagedDisk)
+}
+
+func (attacher *azureDiskAttacher) MountDevice(spec *volume.Spec, devicePath string, deviceMountPath string) error {
+	mounter := attacher.plugin.host.GetMounter(azureDataDiskPluginName)
+	notMnt, err := mounter.IsLikelyNotMountPoint(deviceMountPath)
+
+	if err != nil {
+		if os.IsNotExist(err) {
+			dir := deviceMountPath
+			if runtime.GOOS == "windows" {
+				// in windows, as we use mklink, only need to MkdirAll for parent directory
+				dir = filepath.Dir(deviceMountPath)
+			}
+			if err := os.MkdirAll(dir, 0750); err != nil {
+				return fmt.Errorf("azureDisk - mountDevice:CreateDirectory failed with %s", err)
+			}
+			notMnt = true
+		} else {
+			return fmt.Errorf("azureDisk - mountDevice:IsLikelyNotMountPoint failed with %s", err)
+		}
+	}
+
+	volumeSource, err := getVolumeSource(spec)
+	if err != nil {
+		return err
+	}
+
+	options := []string{}
+	if notMnt {
+		diskMounter := volumehelper.NewSafeFormatAndMountFromHost(azureDataDiskPluginName, attacher.plugin.host)
+		mountOptions := volume.MountOptionFromSpec(spec, options...)
+		err = diskMounter.FormatAndMount(devicePath, deviceMountPath, *volumeSource.FSType, mountOptions)
+		if err != nil {
+			if cleanErr := os.Remove(deviceMountPath); cleanErr != nil {
+				return fmt.Errorf("azureDisk - mountDevice:FormatAndMount failed with %s and clean up failed with :%v", err, cleanErr)
+			}
+			return fmt.Errorf("azureDisk - mountDevice:FormatAndMount failed with %s", err)
+		}
+	}
+	return nil
+}
+
+// Detach detaches disk from Azure VM.
+func (d *azureDiskDetacher) Detach(diskURI string, nodeName types.NodeName) error {
+	if diskURI == "" {
+		return fmt.Errorf("invalid disk to detach: %q", diskURI)
+	}
+
+	instanceid, err := d.cloud.InstanceID(nodeName)
+	if err != nil {
+		glog.Warningf("no instance id for node %q, skip detaching", nodeName)
+		return nil
+	}
+	if ind := strings.LastIndex(instanceid, "/"); ind >= 0 {
+		instanceid = instanceid[(ind + 1):]
+	}
+
+	glog.V(4).Infof("detach %v from node %q", diskURI, nodeName)
+
+	diskController, err := getDiskController(d.plugin.host)
+	if err != nil {
+		return err
+	}
+	err = diskController.DetachDiskByName("", diskURI, nodeName)
+	if err != nil {
+		glog.Errorf("failed to detach azure disk %q, err %v", diskURI, err)
+	}
+
+	glog.V(2).Infof("azureDisk - disk:%s was detached from node:%v", diskURI, nodeName)
+	return err
+}
+
+// UnmountDevice unmounts the volume on the node
+func (detacher *azureDiskDetacher) UnmountDevice(deviceMountPath string) error {
+	err := volumeutil.UnmountPath(deviceMountPath, detacher.plugin.host.GetMounter(detacher.plugin.GetPluginName()))
+	if err == nil {
+		glog.V(4).Infof("azureDisk - Device %s was unmounted", deviceMountPath)
+	} else {
+		glog.Infof("azureDisk - Device %s failed to unmount with error: %s", deviceMountPath, err.Error())
+	}
+	return err
+}

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_common.go

@@ -0,0 +1,206 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path"
+	libstrings "strings"
+
+	storage "github.com/Azure/azure-sdk-for-go/arm/storage"
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/sets"
+	api "k8s.io/kubernetes/pkg/apis/core"
+	"k8s.io/kubernetes/pkg/cloudprovider/providers/azure"
+	"k8s.io/kubernetes/pkg/util/mount"
+	"k8s.io/kubernetes/pkg/util/strings"
+	"k8s.io/kubernetes/pkg/volume"
+)
+
+const (
+	defaultFSType             = "ext4"
+	defaultStorageAccountType = storage.StandardLRS
+	defaultAzureDiskKind      = v1.AzureSharedBlobDisk
+)
+
+type dataDisk struct {
+	volume.MetricsProvider
+	volumeName string
+	diskName   string
+	podUID     types.UID
+}
+
+var (
+	supportedCachingModes = sets.NewString(
+		string(api.AzureDataDiskCachingNone),
+		string(api.AzureDataDiskCachingReadOnly),
+		string(api.AzureDataDiskCachingReadWrite))
+
+	supportedDiskKinds = sets.NewString(
+		string(api.AzureSharedBlobDisk),
+		string(api.AzureDedicatedBlobDisk),
+		string(api.AzureManagedDisk))
+
+	supportedStorageAccountTypes = sets.NewString("Premium_LRS", "Standard_LRS", "Standard_GRS", "Standard_RAGRS")
+)
+
+func getPath(uid types.UID, volName string, host volume.VolumeHost) string {
+	return host.GetPodVolumeDir(uid, strings.EscapeQualifiedNameForDisk(azureDataDiskPluginName), volName)
+}
+
+// creates a unique path for disks (even if they share the same *.vhd name)
+func makeGlobalPDPath(host volume.VolumeHost, diskUri string, isManaged bool) (string, error) {
+	diskUri = libstrings.ToLower(diskUri) // always lower uri because users may enter it in caps.
+	uniqueDiskNameTemplate := "%s%s"
+	hashedDiskUri := azure.MakeCRC32(diskUri)
+	prefix := "b"
+	if isManaged {
+		prefix = "m"
+	}
+	// "{m for managed b for blob}{hashed diskUri or DiskId depending on disk kind }"
+	diskName := fmt.Sprintf(uniqueDiskNameTemplate, prefix, hashedDiskUri)
+	pdPath := path.Join(host.GetPluginDir(azureDataDiskPluginName), mount.MountsInGlobalPDPath, diskName)
+
+	return pdPath, nil
+}
+
+func makeDataDisk(volumeName string, podUID types.UID, diskName string, host volume.VolumeHost) *dataDisk {
+	var metricProvider volume.MetricsProvider
+	if podUID != "" {
+		metricProvider = volume.NewMetricsStatFS(getPath(podUID, volumeName, host))
+	}
+
+	return &dataDisk{
+		MetricsProvider: metricProvider,
+		volumeName:      volumeName,
+		diskName:        diskName,
+		podUID:          podUID,
+	}
+}
+
+func getVolumeSource(spec *volume.Spec) (*v1.AzureDiskVolumeSource, error) {
+	if spec.Volume != nil && spec.Volume.AzureDisk != nil {
+		return spec.Volume.AzureDisk, nil
+	}
+
+	if spec.PersistentVolume != nil && spec.PersistentVolume.Spec.AzureDisk != nil {
+		return spec.PersistentVolume.Spec.AzureDisk, nil
+	}
+
+	return nil, fmt.Errorf("azureDisk - Spec does not reference an Azure disk volume type")
+}
+
+func normalizeFsType(fsType string) string {
+	if fsType == "" {
+		return defaultFSType
+	}
+
+	return fsType
+}
+
+func normalizeKind(kind string) (v1.AzureDataDiskKind, error) {
+	if kind == "" {
+		return defaultAzureDiskKind, nil
+	}
+
+	if !supportedDiskKinds.Has(kind) {
+		return "", fmt.Errorf("azureDisk - %s is not supported disk kind. Supported values are %s", kind, supportedDiskKinds.List())
+	}
+
+	return v1.AzureDataDiskKind(kind), nil
+}
+
+func normalizeStorageAccountType(storageAccountType string) (storage.SkuName, error) {
+	if storageAccountType == "" {
+		return defaultStorageAccountType, nil
+	}
+
+	if !supportedStorageAccountTypes.Has(storageAccountType) {
+		return "", fmt.Errorf("azureDisk - %s is not supported sku/storageaccounttype. Supported values are %s", storageAccountType, supportedStorageAccountTypes.List())
+	}
+
+	return storage.SkuName(storageAccountType), nil
+}
+
+func normalizeCachingMode(cachingMode v1.AzureDataDiskCachingMode) (v1.AzureDataDiskCachingMode, error) {
+	if cachingMode == "" {
+		return v1.AzureDataDiskCachingReadWrite, nil
+	}
+
+	if !supportedCachingModes.Has(string(cachingMode)) {
+		return "", fmt.Errorf("azureDisk - %s is not supported cachingmode. Supported values are %s", cachingMode, supportedCachingModes.List())
+	}
+
+	return cachingMode, nil
+}
+
+type ioHandler interface {
+	ReadDir(dirname string) ([]os.FileInfo, error)
+	WriteFile(filename string, data []byte, perm os.FileMode) error
+	Readlink(name string) (string, error)
+	ReadFile(filename string) ([]byte, error)
+}
+
+//TODO: check if priming the iscsi interface is actually needed
+
+type osIOHandler struct{}
+
+func (handler *osIOHandler) ReadDir(dirname string) ([]os.FileInfo, error) {
+	return ioutil.ReadDir(dirname)
+}
+
+func (handler *osIOHandler) WriteFile(filename string, data []byte, perm os.FileMode) error {
+	return ioutil.WriteFile(filename, data, perm)
+}
+
+func (handler *osIOHandler) Readlink(name string) (string, error) {
+	return os.Readlink(name)
+}
+
+func (handler *osIOHandler) ReadFile(filename string) ([]byte, error) {
+	return ioutil.ReadFile(filename)
+}
+
+func getDiskController(host volume.VolumeHost) (DiskController, error) {
+	cloudProvider := host.GetCloudProvider()
+	az, ok := cloudProvider.(*azure.Cloud)
+
+	if !ok || az == nil {
+		return nil, fmt.Errorf("AzureDisk -  failed to get Azure Cloud Provider. GetCloudProvider returned %v instead", cloudProvider)
+	}
+	return az, nil
+}
+
+func getCloud(host volume.VolumeHost) (*azure.Cloud, error) {
+	cloudProvider := host.GetCloudProvider()
+	az, ok := cloudProvider.(*azure.Cloud)
+
+	if !ok || az == nil {
+		return nil, fmt.Errorf("AzureDisk -  failed to get Azure Cloud Provider. GetCloudProvider returned %v instead", cloudProvider)
+	}
+	return az, nil
+}
+
+func strFirstLetterToUpper(str string) string {
+	if len(str) < 2 {
+		return str
+	}
+	return libstrings.ToUpper(string(str[0])) + str[1:]
+}

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_common_linux.go

@@ -0,0 +1,189 @@
+// +build linux
+
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"path"
+	"strconv"
+	libstrings "strings"
+
+	"github.com/golang/glog"
+	"k8s.io/kubernetes/pkg/util/mount"
+)
+
+// exclude those used by azure as resource and OS root in /dev/disk/azure
+func listAzureDiskPath(io ioHandler) []string {
+	azureDiskPath := "/dev/disk/azure/"
+	var azureDiskList []string
+	if dirs, err := io.ReadDir(azureDiskPath); err == nil {
+		for _, f := range dirs {
+			name := f.Name()
+			diskPath := azureDiskPath + name
+			if link, linkErr := io.Readlink(diskPath); linkErr == nil {
+				sd := link[(libstrings.LastIndex(link, "/") + 1):]
+				azureDiskList = append(azureDiskList, sd)
+			}
+		}
+	}
+	glog.V(12).Infof("Azure sys disks paths: %v", azureDiskList)
+	return azureDiskList
+}
+
+func scsiHostRescan(io ioHandler, exec mount.Exec) {
+	scsi_path := "/sys/class/scsi_host/"
+	if dirs, err := io.ReadDir(scsi_path); err == nil {
+		for _, f := range dirs {
+			name := scsi_path + f.Name() + "/scan"
+			data := []byte("- - -")
+			if err = io.WriteFile(name, data, 0666); err != nil {
+				glog.Warningf("failed to rescan scsi host %s", name)
+			}
+		}
+	} else {
+		glog.Warningf("failed to read %s, err %v", scsi_path, err)
+	}
+}
+
+func findDiskByLun(lun int, io ioHandler, exec mount.Exec) (string, error) {
+	azureDisks := listAzureDiskPath(io)
+	return findDiskByLunWithConstraint(lun, io, azureDisks)
+}
+
+// finds a device mounted to "current" node
+func findDiskByLunWithConstraint(lun int, io ioHandler, azureDisks []string) (string, error) {
+	var err error
+	sys_path := "/sys/bus/scsi/devices"
+	if dirs, err := io.ReadDir(sys_path); err == nil {
+		for _, f := range dirs {
+			name := f.Name()
+			// look for path like /sys/bus/scsi/devices/3:0:0:1
+			arr := libstrings.Split(name, ":")
+			if len(arr) < 4 {
+				continue
+			}
+			if len(azureDisks) == 0 {
+				glog.V(4).Infof("/dev/disk/azure is not populated, now try to parse %v directly", name)
+				target, err := strconv.Atoi(arr[0])
+				if err != nil {
+					glog.Errorf("failed to parse target from %v (%v), err %v", arr[0], name, err)
+					continue
+				}
+				// as observed, targets 0-3 are used by OS disks. Skip them
+				if target <= 3 {
+					continue
+				}
+			}
+
+			// extract LUN from the path.
+			// LUN is the last index of the array, i.e. 1 in /sys/bus/scsi/devices/3:0:0:1
+			l, err := strconv.Atoi(arr[3])
+			if err != nil {
+				// unknown path format, continue to read the next one
+				glog.V(4).Infof("azure disk - failed to parse lun from %v (%v), err %v", arr[3], name, err)
+				continue
+			}
+			if lun == l {
+				// find the matching LUN
+				// read vendor and model to ensure it is a VHD disk
+				vendorPath := path.Join(sys_path, name, "vendor")
+				vendorBytes, err := io.ReadFile(vendorPath)
+				if err != nil {
+					glog.Errorf("failed to read device vendor, err: %v", err)
+					continue
+				}
+				vendor := libstrings.TrimSpace(string(vendorBytes))
+				if libstrings.ToUpper(vendor) != "MSFT" {
+					glog.V(4).Infof("vendor doesn't match VHD, got %s", vendor)
+					continue
+				}
+
+				modelPath := path.Join(sys_path, name, "model")
+				modelBytes, err := io.ReadFile(modelPath)
+				if err != nil {
+					glog.Errorf("failed to read device model, err: %v", err)
+					continue
+				}
+				model := libstrings.TrimSpace(string(modelBytes))
+				if libstrings.ToUpper(model) != "VIRTUAL DISK" {
+					glog.V(4).Infof("model doesn't match VHD, got %s", model)
+					continue
+				}
+
+				// find a disk, validate name
+				dir := path.Join(sys_path, name, "block")
+				if dev, err := io.ReadDir(dir); err == nil {
+					found := false
+					for _, diskName := range azureDisks {
+						glog.V(12).Infof("azure disk - validating disk %q with sys disk %q", dev[0].Name(), diskName)
+						if string(dev[0].Name()) == diskName {
+							found = true
+							break
+						}
+					}
+					if !found {
+						return "/dev/" + dev[0].Name(), nil
+					}
+				}
+			}
+		}
+	}
+	return "", err
+}
+
+func formatIfNotFormatted(disk string, fstype string, exec mount.Exec) {
+	notFormatted, err := diskLooksUnformatted(disk, exec)
+	if err == nil && notFormatted {
+		args := []string{disk}
+		// Disk is unformatted so format it.
+		// Use 'ext4' as the default
+		if len(fstype) == 0 {
+			fstype = "ext4"
+		}
+		if fstype == "ext4" || fstype == "ext3" {
+			args = []string{"-E", "lazy_itable_init=0,lazy_journal_init=0", "-F", disk}
+		}
+		glog.Infof("azureDisk - Disk %q appears to be unformatted, attempting to format as type: %q with options: %v", disk, fstype, args)
+
+		_, err := exec.Run("mkfs."+fstype, args...)
+		if err == nil {
+			// the disk has been formatted successfully try to mount it again.
+			glog.Infof("azureDisk - Disk successfully formatted with 'mkfs.%s %v'", fstype, args)
+		} else {
+			glog.Warningf("azureDisk - Error formatting volume with 'mkfs.%s %v': %v", fstype, args, err)
+		}
+	} else {
+		if err != nil {
+			glog.Warningf("azureDisk - Failed to check if the disk %s formatted with error %s, will attach anyway", disk, err)
+		} else {
+			glog.Infof("azureDisk - Disk %s already formatted, will not format", disk)
+		}
+	}
+}
+
+func diskLooksUnformatted(disk string, exec mount.Exec) (bool, error) {
+	args := []string{"-nd", "-o", "FSTYPE", disk}
+	glog.V(4).Infof("Attempting to determine if disk %q is formatted using lsblk with args: (%v)", disk, args)
+	dataOut, err := exec.Run("lsblk", args...)
+	if err != nil {
+		glog.Errorf("Could not determine if disk %q is formatted (%v)", disk, err)
+		return false, err
+	}
+	output := libstrings.TrimSpace(string(dataOut))
+	return output == "", nil
+}

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_common_test.go

@@ -0,0 +1,136 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+	"strings"
+	"testing"
+	"time"
+
+	"k8s.io/kubernetes/pkg/util/mount"
+)
+
+type fakeFileInfo struct {
+	name string
+}
+
+func (fi *fakeFileInfo) Name() string {
+	return fi.name
+}
+
+func (fi *fakeFileInfo) Size() int64 {
+	return 0
+}
+
+func (fi *fakeFileInfo) Mode() os.FileMode {
+	return 777
+}
+
+func (fi *fakeFileInfo) ModTime() time.Time {
+	return time.Now()
+}
+func (fi *fakeFileInfo) IsDir() bool {
+	return false
+}
+
+func (fi *fakeFileInfo) Sys() interface{} {
+	return nil
+}
+
+var (
+	lun       = 1
+	lunStr    = "1"
+	diskPath  = "4:0:0:" + lunStr
+	devName   = "sdd"
+	lun1      = 2
+	lunStr1   = "2"
+	diskPath1 = "3:0:0:" + lunStr1
+	devName1  = "sde"
+)
+
+type fakeIOHandler struct{}
+
+func (handler *fakeIOHandler) ReadDir(dirname string) ([]os.FileInfo, error) {
+	switch dirname {
+	case "/sys/bus/scsi/devices":
+		f1 := &fakeFileInfo{
+			name: "3:0:0:1",
+		}
+		f2 := &fakeFileInfo{
+			name: "4:0:0:0",
+		}
+		f3 := &fakeFileInfo{
+			name: diskPath,
+		}
+		f4 := &fakeFileInfo{
+			name: "host1",
+		}
+		f5 := &fakeFileInfo{
+			name: "target2:0:0",
+		}
+		return []os.FileInfo{f1, f2, f3, f4, f5}, nil
+	case "/sys/bus/scsi/devices/" + diskPath + "/block":
+		n := &fakeFileInfo{
+			name: devName,
+		}
+		return []os.FileInfo{n}, nil
+	case "/sys/bus/scsi/devices/" + diskPath1 + "/block":
+		n := &fakeFileInfo{
+			name: devName1,
+		}
+		return []os.FileInfo{n}, nil
+	}
+	return nil, fmt.Errorf("bad dir")
+}
+
+func (handler *fakeIOHandler) WriteFile(filename string, data []byte, perm os.FileMode) error {
+	return nil
+}
+
+func (handler *fakeIOHandler) Readlink(name string) (string, error) {
+	return "/dev/azure/disk/sda", nil
+}
+
+func (handler *fakeIOHandler) ReadFile(filename string) ([]byte, error) {
+	if strings.HasSuffix(filename, "vendor") {
+		return []byte("Msft    \n"), nil
+	}
+	if strings.HasSuffix(filename, "model") {
+		return []byte("Virtual Disk \n"), nil
+	}
+	return nil, fmt.Errorf("unknown file")
+}
+
+func TestIoHandler(t *testing.T) {
+	if runtime.GOOS != "windows" && runtime.GOOS != "linux" {
+		t.Skipf("TestIoHandler not supported on GOOS=%s", runtime.GOOS)
+	}
+	disk, err := findDiskByLun(lun, &fakeIOHandler{}, mount.NewOsExec())
+	if runtime.GOOS == "windows" {
+		if err != nil {
+			t.Errorf("no data disk found: disk %v err %v", disk, err)
+		}
+	} else {
+		// if no disk matches lun, exit
+		if disk != "/dev/"+devName || err != nil {
+			t.Errorf("no data disk found: disk %v err %v", disk, err)
+		}
+	}
+}

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_common_unsupported.go

@@ -0,0 +1,31 @@
+// +build !linux,!windows
+
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import "k8s.io/kubernetes/pkg/util/mount"
+
+func scsiHostRescan(io ioHandler, exec mount.Exec) {
+}
+
+func findDiskByLun(lun int, io ioHandler, exec mount.Exec) (string, error) {
+	return "", nil
+}
+
+func formatIfNotFormatted(disk string, fstype string, exec mount.Exec) {
+}

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_common_windows.go

@@ -0,0 +1,114 @@
+// +build windows
+
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/golang/glog"
+
+	"k8s.io/kubernetes/pkg/util/mount"
+)
+
+func scsiHostRescan(io ioHandler, exec mount.Exec) {
+	cmd := "Update-HostStorageCache"
+	output, err := exec.Run("powershell", "/c", cmd)
+	if err != nil {
+		glog.Errorf("Update-HostStorageCache failed in scsiHostRescan, error: %v, output: %q", err, string(output))
+	}
+}
+
+// search Windows disk number by LUN
+func findDiskByLun(lun int, iohandler ioHandler, exec mount.Exec) (string, error) {
+	cmd := `Get-Disk | select number, location | ConvertTo-Json`
+	output, err := exec.Run("powershell", "/c", cmd)
+	if err != nil {
+		glog.Errorf("Get-Disk failed in findDiskByLun, error: %v, output: %q", err, string(output))
+		return "", err
+	}
+
+	if len(output) < 10 {
+		return "", fmt.Errorf("Get-Disk output is too short, output: %q", string(output))
+	}
+
+	var data []map[string]interface{}
+	if err = json.Unmarshal(output, &data); err != nil {
+		glog.Errorf("Get-Disk output is not a json array, output: %q", string(output))
+		return "", err
+	}
+
+	for _, v := range data {
+		if jsonLocation, ok := v["location"]; ok {
+			if location, ok := jsonLocation.(string); ok {
+				if !strings.Contains(location, " LUN ") {
+					continue
+				}
+
+				arr := strings.Split(location, " ")
+				arrLen := len(arr)
+				if arrLen < 3 {
+					glog.Warningf("unexpected json structure from Get-Disk, location: %q", jsonLocation)
+					continue
+				}
+
+				glog.V(4).Infof("found a disk, locatin: %q, lun: %q", location, arr[arrLen-1])
+				//last element of location field is LUN number, e.g.
+				//		"location":  "Integrated : Adapter 3 : Port 0 : Target 0 : LUN 1"
+				l, err := strconv.Atoi(arr[arrLen-1])
+				if err != nil {
+					glog.Warningf("cannot parse element from data structure, location: %q, element: %q", location, arr[arrLen-1])
+					continue
+				}
+
+				if l == lun {
+					glog.V(4).Infof("found a disk and lun, locatin: %q, lun: %d", location, lun)
+					if d, ok := v["number"]; ok {
+						if diskNum, ok := d.(float64); ok {
+							glog.V(2).Infof("azureDisk Mount: got disk number(%d) by LUN(%d)", int(diskNum), lun)
+							return strconv.Itoa(int(diskNum)), nil
+						}
+						glog.Warningf("LUN(%d) found, but could not get disk number(%q), location: %q", lun, d, location)
+					}
+					return "", fmt.Errorf("LUN(%d) found, but could not get disk number, location: %q", lun, location)
+				}
+			}
+		}
+	}
+
+	return "", nil
+}
+
+func formatIfNotFormatted(disk string, fstype string, exec mount.Exec) {
+	if err := mount.ValidateDiskNumber(disk); err != nil {
+		glog.Errorf("azureDisk Mount: formatIfNotFormatted failed, err: %v\n", err)
+		return
+	}
+
+	cmd := fmt.Sprintf("Get-Disk -Number %s | Where partitionstyle -eq 'raw' | Initialize-Disk -PartitionStyle MBR -PassThru", disk)
+	cmd += " | New-Partition -AssignDriveLetter -UseMaximumSize | Format-Volume -FileSystem NTFS -Confirm:$false"
+	output, err := exec.Run("powershell", "/c", cmd)
+	if err != nil {
+		glog.Errorf("azureDisk Mount: Get-Disk failed, error: %v, output: %q", err, string(output))
+	} else {
+		glog.Infof("azureDisk Mount: Disk successfully formatted, disk: %q, fstype: %q\n", disk, fstype)
+	}
+}

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_dd.go

@@ -0,0 +1,215 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"github.com/Azure/azure-sdk-for-go/arm/compute"
+	storage "github.com/Azure/azure-sdk-for-go/arm/storage"
+	"github.com/golang/glog"
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/kubernetes/pkg/util/mount"
+	"k8s.io/kubernetes/pkg/volume"
+)
+
+// interface exposed by the cloud provider implementing Disk functionlity
+type DiskController interface {
+	CreateBlobDisk(dataDiskName string, storageAccountType storage.SkuName, sizeGB int) (string, error)
+	DeleteBlobDisk(diskUri string) error
+
+	CreateManagedDisk(diskName string, storageAccountType storage.SkuName, sizeGB int, tags map[string]string) (string, error)
+	DeleteManagedDisk(diskURI string) error
+
+	// Attaches the disk to the host machine.
+	AttachDisk(isManagedDisk bool, diskName, diskUri string, nodeName types.NodeName, lun int32, cachingMode compute.CachingTypes) error
+	// Detaches the disk, identified by disk name or uri, from the host machine.
+	DetachDiskByName(diskName, diskUri string, nodeName types.NodeName) error
+
+	// Check if a list of volumes are attached to the node with the specified NodeName
+	DisksAreAttached(diskNames []string, nodeName types.NodeName) (map[string]bool, error)
+
+	// Get the LUN number of the disk that is attached to the host
+	GetDiskLun(diskName, diskUri string, nodeName types.NodeName) (int32, error)
+	// Get the next available LUN number to attach a new VHD
+	GetNextDiskLun(nodeName types.NodeName) (int32, error)
+
+	// Create a VHD blob
+	CreateVolume(name, storageAccount, storageAccountType, location string, requestGB int) (string, string, int, error)
+	// Delete a VHD blob
+	DeleteVolume(diskURI string) error
+}
+
+type azureDataDiskPlugin struct {
+	host volume.VolumeHost
+}
+
+var _ volume.VolumePlugin = &azureDataDiskPlugin{}
+var _ volume.PersistentVolumePlugin = &azureDataDiskPlugin{}
+var _ volume.DeletableVolumePlugin = &azureDataDiskPlugin{}
+var _ volume.ProvisionableVolumePlugin = &azureDataDiskPlugin{}
+var _ volume.AttachableVolumePlugin = &azureDataDiskPlugin{}
+
+const (
+	azureDataDiskPluginName = "kubernetes.io/azure-disk"
+)
+
+func ProbeVolumePlugins() []volume.VolumePlugin {
+	return []volume.VolumePlugin{&azureDataDiskPlugin{}}
+}
+
+func (plugin *azureDataDiskPlugin) Init(host volume.VolumeHost) error {
+	plugin.host = host
+	return nil
+}
+
+func (plugin *azureDataDiskPlugin) GetPluginName() string {
+	return azureDataDiskPluginName
+}
+
+func (plugin *azureDataDiskPlugin) GetVolumeName(spec *volume.Spec) (string, error) {
+	volumeSource, err := getVolumeSource(spec)
+	if err != nil {
+		return "", err
+	}
+
+	return volumeSource.DataDiskURI, nil
+}
+
+func (plugin *azureDataDiskPlugin) CanSupport(spec *volume.Spec) bool {
+	return (spec.PersistentVolume != nil && spec.PersistentVolume.Spec.AzureDisk != nil) ||
+		(spec.Volume != nil && spec.Volume.AzureDisk != nil)
+}
+
+func (plugin *azureDataDiskPlugin) RequiresRemount() bool {
+	return false
+}
+
+func (plugin *azureDataDiskPlugin) SupportsMountOption() bool {
+	return true
+}
+
+func (plugin *azureDataDiskPlugin) SupportsBulkVolumeVerification() bool {
+	return false
+}
+
+func (plugin *azureDataDiskPlugin) GetAccessModes() []v1.PersistentVolumeAccessMode {
+	return []v1.PersistentVolumeAccessMode{
+		v1.ReadWriteOnce,
+	}
+}
+
+// NewAttacher initializes an Attacher
+func (plugin *azureDataDiskPlugin) NewAttacher() (volume.Attacher, error) {
+	azure, err := getCloud(plugin.host)
+	if err != nil {
+		glog.Errorf("failed to get azure cloud in NewAttacher, plugin.host : %s, err:%v", plugin.host.GetHostName(), err)
+		return nil, err
+	}
+
+	return &azureDiskAttacher{
+		plugin: plugin,
+		cloud:  azure,
+	}, nil
+}
+
+func (plugin *azureDataDiskPlugin) NewDetacher() (volume.Detacher, error) {
+	azure, err := getCloud(plugin.host)
+	if err != nil {
+		glog.V(4).Infof("failed to get azure cloud in NewDetacher, plugin.host : %s", plugin.host.GetHostName())
+		return nil, err
+	}
+
+	return &azureDiskDetacher{
+		plugin: plugin,
+		cloud:  azure,
+	}, nil
+}
+
+func (plugin *azureDataDiskPlugin) NewDeleter(spec *volume.Spec) (volume.Deleter, error) {
+	volumeSource, err := getVolumeSource(spec)
+	if err != nil {
+		return nil, err
+	}
+
+	disk := makeDataDisk(spec.Name(), "", volumeSource.DiskName, plugin.host)
+
+	return &azureDiskDeleter{
+		spec:     spec,
+		plugin:   plugin,
+		dataDisk: disk,
+	}, nil
+}
+
+func (plugin *azureDataDiskPlugin) NewProvisioner(options volume.VolumeOptions) (volume.Provisioner, error) {
+	if len(options.PVC.Spec.AccessModes) == 0 {
+		options.PVC.Spec.AccessModes = plugin.GetAccessModes()
+	}
+
+	return &azureDiskProvisioner{
+		plugin:  plugin,
+		options: options,
+	}, nil
+}
+
+func (plugin *azureDataDiskPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, options volume.VolumeOptions) (volume.Mounter, error) {
+	volumeSource, err := getVolumeSource(spec)
+	if err != nil {
+		return nil, err
+	}
+	disk := makeDataDisk(spec.Name(), pod.UID, volumeSource.DiskName, plugin.host)
+
+	return &azureDiskMounter{
+		plugin:   plugin,
+		spec:     spec,
+		options:  options,
+		dataDisk: disk,
+	}, nil
+}
+
+func (plugin *azureDataDiskPlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
+	disk := makeDataDisk(volName, podUID, "", plugin.host)
+
+	return &azureDiskUnmounter{
+		plugin:   plugin,
+		dataDisk: disk,
+	}, nil
+}
+
+func (plugin *azureDataDiskPlugin) ConstructVolumeSpec(volumeName, mountPath string) (*volume.Spec, error) {
+	mounter := plugin.host.GetMounter(plugin.GetPluginName())
+	pluginDir := plugin.host.GetPluginDir(plugin.GetPluginName())
+	sourceName, err := mounter.GetDeviceNameFromMount(mountPath, pluginDir)
+
+	if err != nil {
+		return nil, err
+	}
+
+	azureVolume := &v1.Volume{
+		Name: volumeName,
+		VolumeSource: v1.VolumeSource{
+			AzureDisk: &v1.AzureDiskVolumeSource{
+				DataDiskURI: sourceName,
+			},
+		},
+	}
+	return volume.NewSpecFromVolume(azureVolume), nil
+}
+
+func (plugin *azureDataDiskPlugin) GetDeviceMountRefs(deviceMountPath string) ([]string, error) {
+	m := plugin.host.GetMounter(plugin.GetPluginName())
+	return mount.GetMountRefs(m, deviceMountPath)
+}

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_dd_test.go

@@ -0,0 +1,55 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"os"
+	"testing"
+
+	"k8s.io/api/core/v1"
+	utiltesting "k8s.io/client-go/util/testing"
+	"k8s.io/kubernetes/pkg/volume"
+	volumetest "k8s.io/kubernetes/pkg/volume/testing"
+)
+
+func TestCanSupport(t *testing.T) {
+	tmpDir, err := utiltesting.MkTmpdir("azure_dd")
+	if err != nil {
+		t.Fatalf("can't make a temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+	plugMgr := volume.VolumePluginMgr{}
+	plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
+
+	plug, err := plugMgr.FindPluginByName(azureDataDiskPluginName)
+	if err != nil {
+		t.Errorf("Can't find the plugin by name")
+	}
+	if plug.GetPluginName() != azureDataDiskPluginName {
+		t.Errorf("Wrong name: %s", plug.GetPluginName())
+	}
+	if !plug.CanSupport(&volume.Spec{Volume: &v1.Volume{VolumeSource: v1.VolumeSource{AzureDisk: &v1.AzureDiskVolumeSource{}}}}) {
+		t.Errorf("Expected true")
+	}
+
+	if !plug.CanSupport(&volume.Spec{PersistentVolume: &v1.PersistentVolume{Spec: v1.PersistentVolumeSpec{PersistentVolumeSource: v1.PersistentVolumeSource{AzureDisk: &v1.AzureDiskVolumeSource{}}}}}) {
+		t.Errorf("Expected true")
+	}
+}
+
+// fakeAzureProvider type was removed because all functions were not used
+// Testing mounting will require path calculation which depends on the cloud provider, which is faked in the above test.

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_mounter.go

@@ -0,0 +1,195 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+
+	"github.com/golang/glog"
+	"k8s.io/api/core/v1"
+	"k8s.io/kubernetes/pkg/volume"
+	"k8s.io/kubernetes/pkg/volume/util"
+)
+
+type azureDiskMounter struct {
+	*dataDisk
+	spec    *volume.Spec
+	plugin  *azureDataDiskPlugin
+	options volume.VolumeOptions
+}
+
+type azureDiskUnmounter struct {
+	*dataDisk
+	plugin *azureDataDiskPlugin
+}
+
+var _ volume.Unmounter = &azureDiskUnmounter{}
+var _ volume.Mounter = &azureDiskMounter{}
+
+func (m *azureDiskMounter) GetAttributes() volume.Attributes {
+	readOnly := false
+	volumeSource, err := getVolumeSource(m.spec)
+	if err != nil {
+		glog.Infof("azureDisk - mounter failed to get volume source for spec %s %v", m.spec.Name(), err)
+	} else if volumeSource.ReadOnly != nil {
+		readOnly = *volumeSource.ReadOnly
+	}
+	return volume.Attributes{
+		ReadOnly:        readOnly,
+		Managed:         !readOnly,
+		SupportsSELinux: true,
+	}
+}
+
+func (m *azureDiskMounter) CanMount() error {
+	return nil
+}
+
+func (m *azureDiskMounter) SetUp(fsGroup *int64) error {
+	return m.SetUpAt(m.GetPath(), fsGroup)
+}
+
+func (m *azureDiskMounter) GetPath() string {
+	return getPath(m.dataDisk.podUID, m.dataDisk.volumeName, m.plugin.host)
+}
+
+func (m *azureDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
+	mounter := m.plugin.host.GetMounter(m.plugin.GetPluginName())
+	volumeSource, err := getVolumeSource(m.spec)
+
+	if err != nil {
+		glog.Infof("azureDisk - mounter failed to get volume source for spec %s", m.spec.Name())
+		return err
+	}
+
+	diskName := volumeSource.DiskName
+	mountPoint, err := mounter.IsLikelyNotMountPoint(dir)
+
+	if err != nil && !os.IsNotExist(err) {
+		glog.Infof("azureDisk - cannot validate mount point for disk %s on  %s %v", diskName, dir, err)
+		return err
+	}
+	if !mountPoint {
+		glog.V(4).Infof("azureDisk - already mounted to target %s", dir)
+		return nil
+	}
+
+	if runtime.GOOS != "windows" {
+		// in windows, we will use mklink to mount, will MkdirAll in Mount func
+		if err := os.MkdirAll(dir, 0750); err != nil {
+			glog.Errorf("azureDisk - mkdir failed on disk %s on dir: %s (%v)", diskName, dir, err)
+			return err
+		}
+	}
+
+	options := []string{"bind"}
+
+	if volumeSource.ReadOnly != nil && *volumeSource.ReadOnly {
+		options = append(options, "ro")
+	}
+
+	glog.V(4).Infof("azureDisk - Attempting to mount %s on %s", diskName, dir)
+	isManagedDisk := (*volumeSource.Kind == v1.AzureManagedDisk)
+	globalPDPath, err := makeGlobalPDPath(m.plugin.host, volumeSource.DataDiskURI, isManagedDisk)
+
+	if err != nil {
+		return err
+	}
+
+	mountErr := mounter.Mount(globalPDPath, dir, *volumeSource.FSType, options)
+	// Everything in the following control flow is meant as an
+	// attempt cleanup a failed setupAt (bind mount)
+	if mountErr != nil {
+		glog.Infof("azureDisk - SetupAt:Mount disk:%s at dir:%s failed during mounting with error:%v, will attempt to clean up", diskName, dir, mountErr)
+		mountPoint, err := mounter.IsLikelyNotMountPoint(dir)
+		if err != nil {
+			return fmt.Errorf("azureDisk - SetupAt:Mount:Failure:cleanup IsLikelyNotMountPoint check failed for disk:%s on dir:%s with error %v original-mountErr:%v", diskName, dir, err, mountErr)
+		}
+
+		if !mountPoint {
+			if err = mounter.Unmount(dir); err != nil {
+				return fmt.Errorf("azureDisk - SetupAt:Mount:Failure:cleanup failed to unmount disk:%s on dir:%s with error:%v original-mountErr:%v", diskName, dir, err, mountErr)
+			}
+			mountPoint, err := mounter.IsLikelyNotMountPoint(dir)
+			if err != nil {
+				return fmt.Errorf("azureDisk - SetupAt:Mount:Failure:cleanup IsLikelyNotMountPoint for disk:%s on dir:%s check failed with error:%v original-mountErr:%v", diskName, dir, err, mountErr)
+			}
+			if !mountPoint {
+				// not cool. leave for next sync loop.
+				return fmt.Errorf("azureDisk - SetupAt:Mount:Failure:cleanup disk %s is still mounted on %s during cleanup original-mountErr:%v, despite call to unmount(). Will try again next sync loop.", diskName, dir, mountErr)
+			}
+		}
+
+		if err = os.Remove(dir); err != nil {
+			return fmt.Errorf("azureDisk - SetupAt:Mount:Failure error cleaning up (removing dir:%s) with error:%v original-mountErr:%v", dir, err, mountErr)
+		}
+
+		glog.V(2).Infof("azureDisk - Mount of disk:%s on dir:%s failed with mount error:%v post failure clean up was completed", diskName, dir, err, mountErr)
+		return mountErr
+	}
+
+	if volumeSource.ReadOnly == nil || !*volumeSource.ReadOnly {
+		volume.SetVolumeOwnership(m, fsGroup)
+	}
+
+	glog.V(2).Infof("azureDisk - successfully mounted disk %s on %s", diskName, dir)
+	return nil
+}
+
+func (u *azureDiskUnmounter) TearDown() error {
+	return u.TearDownAt(u.GetPath())
+}
+
+func (u *azureDiskUnmounter) TearDownAt(dir string) error {
+	if pathExists, pathErr := util.PathExists(dir); pathErr != nil {
+		return fmt.Errorf("Error checking if path exists: %v", pathErr)
+	} else if !pathExists {
+		glog.Warningf("Warning: Unmount skipped because path does not exist: %v", dir)
+		return nil
+	}
+
+	glog.V(4).Infof("azureDisk - TearDownAt: %s", dir)
+	mounter := u.plugin.host.GetMounter(u.plugin.GetPluginName())
+	mountPoint, err := mounter.IsLikelyNotMountPoint(dir)
+	if err != nil {
+		return fmt.Errorf("azureDisk - TearDownAt: %s failed to do IsLikelyNotMountPoint %s", dir, err)
+	}
+	if mountPoint {
+		if err := os.Remove(dir); err != nil {
+			return fmt.Errorf("azureDisk - TearDownAt: %s failed to do os.Remove %s", dir, err)
+		}
+	}
+	if err := mounter.Unmount(dir); err != nil {
+		return fmt.Errorf("azureDisk - TearDownAt: %s failed to do mounter.Unmount %s", dir, err)
+	}
+	mountPoint, err = mounter.IsLikelyNotMountPoint(dir)
+	if err != nil {
+		return fmt.Errorf("azureDisk - TearTownAt:IsLikelyNotMountPoint check failed: %v", err)
+	}
+
+	if mountPoint {
+		return os.Remove(dir)
+	}
+
+	return fmt.Errorf("azureDisk - failed to un-bind-mount volume dir")
+}
+
+func (u *azureDiskUnmounter) GetPath() string {
+	return getPath(u.dataDisk.podUID, u.dataDisk.volumeName, u.plugin.host)
+}

vendor/k8s.io/kubernetes/pkg/volume/azure_dd/azure_provision.go

@@ -0,0 +1,191 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure_dd
+
+import (
+	"fmt"
+	"strings"
+
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/resource"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/pkg/volume"
+)
+
+type azureDiskProvisioner struct {
+	plugin  *azureDataDiskPlugin
+	options volume.VolumeOptions
+}
+
+type azureDiskDeleter struct {
+	*dataDisk
+	spec   *volume.Spec
+	plugin *azureDataDiskPlugin
+}
+
+var _ volume.Provisioner = &azureDiskProvisioner{}
+var _ volume.Deleter = &azureDiskDeleter{}
+
+func (d *azureDiskDeleter) GetPath() string {
+	return getPath(d.podUID, d.dataDisk.diskName, d.plugin.host)
+}
+
+func (d *azureDiskDeleter) Delete() error {
+	volumeSource, err := getVolumeSource(d.spec)
+	if err != nil {
+		return err
+	}
+
+	diskController, err := getDiskController(d.plugin.host)
+	if err != nil {
+		return err
+	}
+
+	managed := (*volumeSource.Kind == v1.AzureManagedDisk)
+
+	if managed {
+		return diskController.DeleteManagedDisk(volumeSource.DataDiskURI)
+	}
+
+	return diskController.DeleteBlobDisk(volumeSource.DataDiskURI)
+}
+
+func (p *azureDiskProvisioner) Provision() (*v1.PersistentVolume, error) {
+	if !volume.AccessModesContainedInAll(p.plugin.GetAccessModes(), p.options.PVC.Spec.AccessModes) {
+		return nil, fmt.Errorf("invalid AccessModes %v: only AccessModes %v are supported", p.options.PVC.Spec.AccessModes, p.plugin.GetAccessModes())
+	}
+	supportedModes := p.plugin.GetAccessModes()
+
+	// perform static validation first
+	if p.options.PVC.Spec.Selector != nil {
+		return nil, fmt.Errorf("azureDisk - claim.Spec.Selector is not supported for dynamic provisioning on Azure disk")
+	}
+
+	if len(p.options.PVC.Spec.AccessModes) > 1 {
+		return nil, fmt.Errorf("AzureDisk - multiple access modes are not supported on AzureDisk plugin")
+	}
+
+	if len(p.options.PVC.Spec.AccessModes) == 1 {
+		if p.options.PVC.Spec.AccessModes[0] != supportedModes[0] {
+			return nil, fmt.Errorf("AzureDisk - mode %s is not supporetd by AzureDisk plugin supported mode is %s", p.options.PVC.Spec.AccessModes[0], supportedModes)
+		}
+	}
+
+	var (
+		location, account          string
+		storageAccountType, fsType string
+		cachingMode                v1.AzureDataDiskCachingMode
+		strKind                    string
+		err                        error
+	)
+	// maxLength = 79 - (4 for ".vhd") = 75
+	name := volume.GenerateVolumeName(p.options.ClusterName, p.options.PVName, 75)
+	capacity := p.options.PVC.Spec.Resources.Requests[v1.ResourceName(v1.ResourceStorage)]
+	requestBytes := capacity.Value()
+	requestGB := int(volume.RoundUpSize(requestBytes, 1024*1024*1024))
+
+	for k, v := range p.options.Parameters {
+		switch strings.ToLower(k) {
+		case "skuname":
+			storageAccountType = v
+		case "location":
+			location = v
+		case "storageaccount":
+			account = v
+		case "storageaccounttype":
+			storageAccountType = v
+		case "kind":
+			strKind = v
+		case "cachingmode":
+			cachingMode = v1.AzureDataDiskCachingMode(v)
+		case volume.VolumeParameterFSType:
+			fsType = strings.ToLower(v)
+		default:
+			return nil, fmt.Errorf("AzureDisk - invalid option %s in storage class", k)
+		}
+	}
+
+	// normalize values
+	fsType = normalizeFsType(fsType)
+	skuName, err := normalizeStorageAccountType(storageAccountType)
+	if err != nil {
+		return nil, err
+	}
+
+	kind, err := normalizeKind(strFirstLetterToUpper(strKind))
+	if err != nil {
+		return nil, err
+	}
+
+	if cachingMode, err = normalizeCachingMode(cachingMode); err != nil {
+		return nil, err
+	}
+
+	diskController, err := getDiskController(p.plugin.host)
+	if err != nil {
+		return nil, err
+	}
+
+	// create disk
+	diskURI := ""
+	if kind == v1.AzureManagedDisk {
+		diskURI, err = diskController.CreateManagedDisk(name, skuName, requestGB, *(p.options.CloudTags))
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		if kind == v1.AzureDedicatedBlobDisk {
+			_, diskURI, _, err = diskController.CreateVolume(name, account, storageAccountType, location, requestGB)
+			if err != nil {
+				return nil, err
+			}
+		} else {
+			diskURI, err = diskController.CreateBlobDisk(name, skuName, requestGB)
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	pv := &v1.PersistentVolume{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:   p.options.PVName,
+			Labels: map[string]string{},
+			Annotations: map[string]string{
+				"volumehelper.VolumeDynamicallyCreatedByKey": "azure-disk-dynamic-provisioner",
+			},
+		},
+		Spec: v1.PersistentVolumeSpec{
+			PersistentVolumeReclaimPolicy: p.options.PersistentVolumeReclaimPolicy,
+			AccessModes:                   supportedModes,
+			Capacity: v1.ResourceList{
+				v1.ResourceName(v1.ResourceStorage): resource.MustParse(fmt.Sprintf("%dGi", requestGB)),
+			},
+			PersistentVolumeSource: v1.PersistentVolumeSource{
+				AzureDisk: &v1.AzureDiskVolumeSource{
+					CachingMode: &cachingMode,
+					DiskName:    name,
+					DataDiskURI: diskURI,
+					Kind:        &kind,
+					FSType:      &fsType,
+				},
+			},
+			MountOptions: p.options.MountOptions,
+		},
+	}
+	return pv, nil
+}