mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-22 13:00:19 +00:00
655 lines
21 KiB
Go
655 lines
21 KiB
Go
/*
|
|
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 iscsi
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/golang/glog"
|
|
"k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/types"
|
|
"k8s.io/kubernetes/pkg/util/mount"
|
|
utilstrings "k8s.io/kubernetes/pkg/util/strings"
|
|
"k8s.io/kubernetes/pkg/volume"
|
|
ioutil "k8s.io/kubernetes/pkg/volume/util"
|
|
"k8s.io/kubernetes/pkg/volume/util/volumepathhandler"
|
|
)
|
|
|
|
// This is the primary entrypoint for volume plugins.
|
|
func ProbeVolumePlugins() []volume.VolumePlugin {
|
|
return []volume.VolumePlugin{&iscsiPlugin{nil}}
|
|
}
|
|
|
|
type iscsiPlugin struct {
|
|
host volume.VolumeHost
|
|
}
|
|
|
|
var _ volume.VolumePlugin = &iscsiPlugin{}
|
|
var _ volume.PersistentVolumePlugin = &iscsiPlugin{}
|
|
var _ volume.BlockVolumePlugin = &iscsiPlugin{}
|
|
|
|
const (
|
|
iscsiPluginName = "kubernetes.io/iscsi"
|
|
)
|
|
|
|
func (plugin *iscsiPlugin) Init(host volume.VolumeHost) error {
|
|
plugin.host = host
|
|
return nil
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) GetPluginName() string {
|
|
return iscsiPluginName
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) GetVolumeName(spec *volume.Spec) (string, error) {
|
|
tp, _, iqn, lun, err := getISCSITargetInfo(spec)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return fmt.Sprintf("%v:%v:%v", tp, iqn, lun), nil
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) CanSupport(spec *volume.Spec) bool {
|
|
return (spec.Volume != nil && spec.Volume.ISCSI != nil) || (spec.PersistentVolume != nil && spec.PersistentVolume.Spec.ISCSI != nil)
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) RequiresRemount() bool {
|
|
return false
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) SupportsMountOption() bool {
|
|
return true
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) SupportsBulkVolumeVerification() bool {
|
|
return false
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) GetAccessModes() []v1.PersistentVolumeAccessMode {
|
|
return []v1.PersistentVolumeAccessMode{
|
|
v1.ReadWriteOnce,
|
|
v1.ReadOnlyMany,
|
|
}
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, _ volume.VolumeOptions) (volume.Mounter, error) {
|
|
if pod == nil {
|
|
return nil, fmt.Errorf("nil pod")
|
|
}
|
|
secret, err := createSecretMap(spec, plugin, pod.Namespace)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return plugin.newMounterInternal(spec, pod.UID, &ISCSIUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()), secret)
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) newMounterInternal(spec *volume.Spec, podUID types.UID, manager diskManager, mounter mount.Interface, exec mount.Exec, secret map[string]string) (volume.Mounter, error) {
|
|
readOnly, fsType, err := getISCSIVolumeInfo(spec)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
iscsiDisk, err := createISCSIDisk(spec, podUID, plugin, manager, secret)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if iscsiDisk != nil {
|
|
|
|
//Add volume metrics
|
|
iscsiDisk.MetricsProvider = volume.NewMetricsStatFS(iscsiDisk.GetPath())
|
|
}
|
|
return &iscsiDiskMounter{
|
|
iscsiDisk: iscsiDisk,
|
|
fsType: fsType,
|
|
readOnly: readOnly,
|
|
mounter: &mount.SafeFormatAndMount{Interface: mounter, Exec: exec},
|
|
exec: exec,
|
|
deviceUtil: ioutil.NewDeviceHandler(ioutil.NewIOHandler()),
|
|
mountOptions: ioutil.MountOptionFromSpec(spec),
|
|
}, nil
|
|
}
|
|
|
|
// NewBlockVolumeMapper creates a new volume.BlockVolumeMapper from an API specification.
|
|
func (plugin *iscsiPlugin) NewBlockVolumeMapper(spec *volume.Spec, pod *v1.Pod, _ volume.VolumeOptions) (volume.BlockVolumeMapper, error) {
|
|
// If this is called via GenerateUnmapDeviceFunc(), pod is nil.
|
|
// Pass empty string as dummy uid since uid isn't used in the case.
|
|
var uid types.UID
|
|
var secret map[string]string
|
|
var err error
|
|
if pod != nil {
|
|
uid = pod.UID
|
|
secret, err = createSecretMap(spec, plugin, pod.Namespace)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return plugin.newBlockVolumeMapperInternal(spec, uid, &ISCSIUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()), secret)
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) newBlockVolumeMapperInternal(spec *volume.Spec, podUID types.UID, manager diskManager, mounter mount.Interface, exec mount.Exec, secret map[string]string) (volume.BlockVolumeMapper, error) {
|
|
readOnly, _, err := getISCSIVolumeInfo(spec)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
iscsiDisk, err := createISCSIDisk(spec, podUID, plugin, manager, secret)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &iscsiDiskMapper{
|
|
iscsiDisk: iscsiDisk,
|
|
readOnly: readOnly,
|
|
exec: exec,
|
|
deviceUtil: ioutil.NewDeviceHandler(ioutil.NewIOHandler()),
|
|
}, nil
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
|
|
return plugin.newUnmounterInternal(volName, podUID, &ISCSIUtil{}, plugin.host.GetMounter(plugin.GetPluginName()), plugin.host.GetExec(plugin.GetPluginName()))
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) newUnmounterInternal(volName string, podUID types.UID, manager diskManager, mounter mount.Interface, exec mount.Exec) (volume.Unmounter, error) {
|
|
return &iscsiDiskUnmounter{
|
|
iscsiDisk: &iscsiDisk{
|
|
podUID: podUID,
|
|
VolName: volName,
|
|
manager: manager,
|
|
plugin: plugin,
|
|
MetricsProvider: volume.NewMetricsStatFS(plugin.host.GetPodVolumeDir(podUID, utilstrings.EscapeQualifiedNameForDisk(iscsiPluginName), volName)),
|
|
},
|
|
mounter: mounter,
|
|
exec: exec,
|
|
}, nil
|
|
}
|
|
|
|
// NewBlockVolumeUnmapper creates a new volume.BlockVolumeUnmapper from recoverable state.
|
|
func (plugin *iscsiPlugin) NewBlockVolumeUnmapper(volName string, podUID types.UID) (volume.BlockVolumeUnmapper, error) {
|
|
return plugin.newUnmapperInternal(volName, podUID, &ISCSIUtil{}, plugin.host.GetExec(plugin.GetPluginName()))
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) newUnmapperInternal(volName string, podUID types.UID, manager diskManager, exec mount.Exec) (volume.BlockVolumeUnmapper, error) {
|
|
return &iscsiDiskUnmapper{
|
|
iscsiDisk: &iscsiDisk{
|
|
podUID: podUID,
|
|
VolName: volName,
|
|
manager: manager,
|
|
plugin: plugin,
|
|
},
|
|
exec: exec,
|
|
deviceUtil: ioutil.NewDeviceHandler(ioutil.NewIOHandler()),
|
|
}, nil
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) ConstructVolumeSpec(volumeName, mountPath string) (*volume.Spec, error) {
|
|
// Find globalPDPath from pod volume directory(mountPath)
|
|
var globalPDPath string
|
|
mounter := plugin.host.GetMounter(plugin.GetPluginName())
|
|
paths, err := mount.GetMountRefs(mounter, mountPath)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, path := range paths {
|
|
if strings.Contains(path, plugin.host.GetPluginDir(iscsiPluginName)) {
|
|
globalPDPath = path
|
|
break
|
|
}
|
|
}
|
|
// Couldn't fetch globalPDPath
|
|
if len(globalPDPath) == 0 {
|
|
return nil, fmt.Errorf("couldn't fetch globalPDPath. failed to obtain volume spec")
|
|
}
|
|
|
|
// Obtain iscsi disk configurations from globalPDPath
|
|
device, _, err := extractDeviceAndPrefix(globalPDPath)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
bkpPortal, iqn, err := extractPortalAndIqn(device)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
iface, _ := extractIface(globalPDPath)
|
|
iscsiVolume := &v1.Volume{
|
|
Name: volumeName,
|
|
VolumeSource: v1.VolumeSource{
|
|
ISCSI: &v1.ISCSIVolumeSource{
|
|
TargetPortal: bkpPortal,
|
|
IQN: iqn,
|
|
ISCSIInterface: iface,
|
|
},
|
|
},
|
|
}
|
|
return volume.NewSpecFromVolume(iscsiVolume), nil
|
|
}
|
|
|
|
func (plugin *iscsiPlugin) ConstructBlockVolumeSpec(podUID types.UID, volumeName, mapPath string) (*volume.Spec, error) {
|
|
pluginDir := plugin.host.GetVolumeDevicePluginDir(iscsiPluginName)
|
|
blkutil := volumepathhandler.NewBlockVolumePathHandler()
|
|
globalMapPathUUID, err := blkutil.FindGlobalMapPathUUIDFromPod(pluginDir, mapPath, podUID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
glog.V(5).Infof("globalMapPathUUID: %v, err: %v", globalMapPathUUID, err)
|
|
// Retrieve volume information from globalMapPathUUID
|
|
// globalMapPathUUID example:
|
|
// plugins/kubernetes.io/{PluginName}/{DefaultKubeletVolumeDevicesDirName}/{volumePluginDependentPath}/{pod uuid}
|
|
// plugins/kubernetes.io/iscsi/volumeDevices/iface-default/192.168.0.10:3260-iqn.2017-05.com.example:test-lun-0/{pod uuid}
|
|
globalMapPath := filepath.Dir(globalMapPathUUID)
|
|
return getVolumeSpecFromGlobalMapPath(volumeName, globalMapPath)
|
|
}
|
|
|
|
type iscsiDisk struct {
|
|
VolName string
|
|
podUID types.UID
|
|
Portals []string
|
|
Iqn string
|
|
Lun string
|
|
Iface string
|
|
chap_discovery bool
|
|
chap_session bool
|
|
secret map[string]string
|
|
InitiatorName string
|
|
plugin *iscsiPlugin
|
|
// Utility interface that provides API calls to the provider to attach/detach disks.
|
|
manager diskManager
|
|
volume.MetricsProvider
|
|
}
|
|
|
|
func (iscsi *iscsiDisk) GetPath() string {
|
|
name := iscsiPluginName
|
|
// safe to use PodVolumeDir now: volume teardown occurs before pod is cleaned up
|
|
return iscsi.plugin.host.GetPodVolumeDir(iscsi.podUID, utilstrings.EscapeQualifiedNameForDisk(name), iscsi.VolName)
|
|
}
|
|
|
|
func (iscsi *iscsiDisk) iscsiGlobalMapPath(spec *volume.Spec) (string, error) {
|
|
mounter, err := volumeSpecToMounter(spec, iscsi.plugin.host, nil /* pod */)
|
|
if err != nil {
|
|
glog.Warningf("failed to get iscsi mounter: %v", err)
|
|
return "", err
|
|
}
|
|
return iscsi.manager.MakeGlobalVDPDName(*mounter.iscsiDisk), nil
|
|
}
|
|
|
|
func (iscsi *iscsiDisk) iscsiPodDeviceMapPath() (string, string) {
|
|
name := iscsiPluginName
|
|
return iscsi.plugin.host.GetPodVolumeDeviceDir(iscsi.podUID, utilstrings.EscapeQualifiedNameForDisk(name)), iscsi.VolName
|
|
}
|
|
|
|
type iscsiDiskMounter struct {
|
|
*iscsiDisk
|
|
readOnly bool
|
|
fsType string
|
|
volumeMode v1.PersistentVolumeMode
|
|
mounter *mount.SafeFormatAndMount
|
|
exec mount.Exec
|
|
deviceUtil ioutil.DeviceUtil
|
|
mountOptions []string
|
|
}
|
|
|
|
var _ volume.Mounter = &iscsiDiskMounter{}
|
|
|
|
func (b *iscsiDiskMounter) GetAttributes() volume.Attributes {
|
|
return volume.Attributes{
|
|
ReadOnly: b.readOnly,
|
|
Managed: !b.readOnly,
|
|
SupportsSELinux: true,
|
|
}
|
|
}
|
|
|
|
// Checks prior to mount operations to verify that the required components (binaries, etc.)
|
|
// to mount the volume are available on the underlying node.
|
|
// If not, it returns an error
|
|
func (b *iscsiDiskMounter) CanMount() error {
|
|
return nil
|
|
}
|
|
|
|
func (b *iscsiDiskMounter) SetUp(fsGroup *int64) error {
|
|
return b.SetUpAt(b.GetPath(), fsGroup)
|
|
}
|
|
|
|
func (b *iscsiDiskMounter) SetUpAt(dir string, fsGroup *int64) error {
|
|
// diskSetUp checks mountpoints and prevent repeated calls
|
|
err := diskSetUp(b.manager, *b, dir, b.mounter, fsGroup)
|
|
if err != nil {
|
|
glog.Errorf("iscsi: failed to setup")
|
|
}
|
|
return err
|
|
}
|
|
|
|
type iscsiDiskUnmounter struct {
|
|
*iscsiDisk
|
|
mounter mount.Interface
|
|
exec mount.Exec
|
|
}
|
|
|
|
var _ volume.Unmounter = &iscsiDiskUnmounter{}
|
|
|
|
// Unmounts the bind mount, and detaches the disk only if the disk
|
|
// resource was the last reference to that disk on the kubelet.
|
|
func (c *iscsiDiskUnmounter) TearDown() error {
|
|
return c.TearDownAt(c.GetPath())
|
|
}
|
|
|
|
func (c *iscsiDiskUnmounter) TearDownAt(dir string) error {
|
|
return ioutil.UnmountPath(dir, c.mounter)
|
|
}
|
|
|
|
// Block Volumes Support
|
|
type iscsiDiskMapper struct {
|
|
*iscsiDisk
|
|
readOnly bool
|
|
exec mount.Exec
|
|
deviceUtil ioutil.DeviceUtil
|
|
}
|
|
|
|
var _ volume.BlockVolumeMapper = &iscsiDiskMapper{}
|
|
|
|
func (b *iscsiDiskMapper) SetUpDevice() (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
func (b *iscsiDiskMapper) MapDevice(devicePath, globalMapPath, volumeMapPath, volumeMapName string, podUID types.UID) error {
|
|
return ioutil.MapBlockVolume(devicePath, globalMapPath, volumeMapPath, volumeMapName, podUID)
|
|
}
|
|
|
|
type iscsiDiskUnmapper struct {
|
|
*iscsiDisk
|
|
exec mount.Exec
|
|
deviceUtil ioutil.DeviceUtil
|
|
}
|
|
|
|
var _ volume.BlockVolumeUnmapper = &iscsiDiskUnmapper{}
|
|
|
|
// Even though iSCSI plugin has attacher/detacher implementation, iSCSI plugin
|
|
// needs volume detach operation during TearDownDevice(). This method is only
|
|
// chance that operations are done on kubelet node during volume teardown sequences.
|
|
func (c *iscsiDiskUnmapper) TearDownDevice(mapPath, _ string) error {
|
|
err := c.manager.DetachBlockISCSIDisk(*c, mapPath)
|
|
if err != nil {
|
|
return fmt.Errorf("iscsi: failed to detach disk: %s\nError: %v", mapPath, err)
|
|
}
|
|
glog.V(4).Infof("iscsi: %q is unmounted, deleting the directory", mapPath)
|
|
err = os.RemoveAll(mapPath)
|
|
if err != nil {
|
|
return fmt.Errorf("iscsi: failed to delete the directory: %s\nError: %v", mapPath, err)
|
|
}
|
|
glog.V(4).Infof("iscsi: successfully detached disk: %s", mapPath)
|
|
return nil
|
|
}
|
|
|
|
// GetGlobalMapPath returns global map path and error
|
|
// path: plugins/kubernetes.io/{PluginName}/volumeDevices/{ifaceName}/{portal-some_iqn-lun-lun_id}
|
|
func (iscsi *iscsiDisk) GetGlobalMapPath(spec *volume.Spec) (string, error) {
|
|
return iscsi.iscsiGlobalMapPath(spec)
|
|
}
|
|
|
|
// GetPodDeviceMapPath returns pod device map path and volume name
|
|
// path: pods/{podUid}/volumeDevices/kubernetes.io~iscsi
|
|
// volumeName: pv0001
|
|
func (iscsi *iscsiDisk) GetPodDeviceMapPath() (string, string) {
|
|
return iscsi.iscsiPodDeviceMapPath()
|
|
}
|
|
|
|
func portalMounter(portal string) string {
|
|
if !strings.Contains(portal, ":") {
|
|
portal = portal + ":3260"
|
|
}
|
|
return portal
|
|
}
|
|
|
|
// get iSCSI volume info: readOnly and fstype
|
|
func getISCSIVolumeInfo(spec *volume.Spec) (bool, string, error) {
|
|
// for volume source, readonly is in volume spec
|
|
// for PV, readonly is in PV spec. PV gets the ReadOnly flag indirectly through the PVC source
|
|
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
|
return spec.Volume.ISCSI.ReadOnly, spec.Volume.ISCSI.FSType, nil
|
|
} else if spec.PersistentVolume != nil &&
|
|
spec.PersistentVolume.Spec.ISCSI != nil {
|
|
return spec.ReadOnly, spec.PersistentVolume.Spec.ISCSI.FSType, nil
|
|
}
|
|
|
|
return false, "", fmt.Errorf("Spec does not reference an ISCSI volume type")
|
|
}
|
|
|
|
// get iSCSI target info: target portal, portals, iqn, and lun
|
|
func getISCSITargetInfo(spec *volume.Spec) (string, []string, string, int32, error) {
|
|
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
|
return spec.Volume.ISCSI.TargetPortal, spec.Volume.ISCSI.Portals, spec.Volume.ISCSI.IQN, spec.Volume.ISCSI.Lun, nil
|
|
} else if spec.PersistentVolume != nil &&
|
|
spec.PersistentVolume.Spec.ISCSI != nil {
|
|
return spec.PersistentVolume.Spec.ISCSI.TargetPortal, spec.PersistentVolume.Spec.ISCSI.Portals, spec.PersistentVolume.Spec.ISCSI.IQN, spec.PersistentVolume.Spec.ISCSI.Lun, nil
|
|
}
|
|
|
|
return "", nil, "", 0, fmt.Errorf("Spec does not reference an ISCSI volume type")
|
|
}
|
|
|
|
// get iSCSI initiator info: iface and initiator name
|
|
func getISCSIInitiatorInfo(spec *volume.Spec) (string, *string, error) {
|
|
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
|
return spec.Volume.ISCSI.ISCSIInterface, spec.Volume.ISCSI.InitiatorName, nil
|
|
} else if spec.PersistentVolume != nil &&
|
|
spec.PersistentVolume.Spec.ISCSI != nil {
|
|
return spec.PersistentVolume.Spec.ISCSI.ISCSIInterface, spec.PersistentVolume.Spec.ISCSI.InitiatorName, nil
|
|
}
|
|
|
|
return "", nil, fmt.Errorf("Spec does not reference an ISCSI volume type")
|
|
}
|
|
|
|
// get iSCSI Discovery CHAP boolean
|
|
func getISCSIDiscoveryCHAPInfo(spec *volume.Spec) (bool, error) {
|
|
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
|
return spec.Volume.ISCSI.DiscoveryCHAPAuth, nil
|
|
} else if spec.PersistentVolume != nil &&
|
|
spec.PersistentVolume.Spec.ISCSI != nil {
|
|
return spec.PersistentVolume.Spec.ISCSI.DiscoveryCHAPAuth, nil
|
|
}
|
|
|
|
return false, fmt.Errorf("Spec does not reference an ISCSI volume type")
|
|
}
|
|
|
|
// get iSCSI Session CHAP boolean
|
|
func getISCSISessionCHAPInfo(spec *volume.Spec) (bool, error) {
|
|
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
|
return spec.Volume.ISCSI.SessionCHAPAuth, nil
|
|
} else if spec.PersistentVolume != nil &&
|
|
spec.PersistentVolume.Spec.ISCSI != nil {
|
|
return spec.PersistentVolume.Spec.ISCSI.SessionCHAPAuth, nil
|
|
}
|
|
|
|
return false, fmt.Errorf("Spec does not reference an ISCSI volume type")
|
|
}
|
|
|
|
// get iSCSI CHAP Secret info: secret name and namespace
|
|
func getISCSISecretNameAndNamespace(spec *volume.Spec, defaultSecretNamespace string) (string, string, error) {
|
|
if spec.Volume != nil && spec.Volume.ISCSI != nil {
|
|
if spec.Volume.ISCSI.SecretRef != nil {
|
|
return spec.Volume.ISCSI.SecretRef.Name, defaultSecretNamespace, nil
|
|
}
|
|
return "", "", nil
|
|
} else if spec.PersistentVolume != nil &&
|
|
spec.PersistentVolume.Spec.ISCSI != nil {
|
|
secretRef := spec.PersistentVolume.Spec.ISCSI.SecretRef
|
|
secretNs := defaultSecretNamespace
|
|
if secretRef != nil {
|
|
if len(secretRef.Namespace) != 0 {
|
|
secretNs = secretRef.Namespace
|
|
}
|
|
return secretRef.Name, secretNs, nil
|
|
}
|
|
return "", "", nil
|
|
}
|
|
|
|
return "", "", fmt.Errorf("Spec does not reference an ISCSI volume type")
|
|
}
|
|
|
|
func createISCSIDisk(spec *volume.Spec, podUID types.UID, plugin *iscsiPlugin, manager diskManager, secret map[string]string) (*iscsiDisk, error) {
|
|
tp, portals, iqn, lunStr, err := getISCSITargetInfo(spec)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
lun := strconv.Itoa(int(lunStr))
|
|
portal := portalMounter(tp)
|
|
var bkportal []string
|
|
bkportal = append(bkportal, portal)
|
|
for _, p := range portals {
|
|
bkportal = append(bkportal, portalMounter(string(p)))
|
|
}
|
|
|
|
iface, initiatorNamePtr, err := getISCSIInitiatorInfo(spec)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var initiatorName string
|
|
if initiatorNamePtr != nil {
|
|
initiatorName = *initiatorNamePtr
|
|
}
|
|
chapDiscovery, err := getISCSIDiscoveryCHAPInfo(spec)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
chapSession, err := getISCSISessionCHAPInfo(spec)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &iscsiDisk{
|
|
podUID: podUID,
|
|
VolName: spec.Name(),
|
|
Portals: bkportal,
|
|
Iqn: iqn,
|
|
Lun: lun,
|
|
Iface: iface,
|
|
chap_discovery: chapDiscovery,
|
|
chap_session: chapSession,
|
|
secret: secret,
|
|
InitiatorName: initiatorName,
|
|
manager: manager,
|
|
plugin: plugin}, nil
|
|
}
|
|
|
|
func createSecretMap(spec *volume.Spec, plugin *iscsiPlugin, namespace string) (map[string]string, error) {
|
|
var secret map[string]string
|
|
chapDiscover, err := getISCSIDiscoveryCHAPInfo(spec)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
chapSession, err := getISCSISessionCHAPInfo(spec)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if chapDiscover || chapSession {
|
|
secretName, secretNamespace, err := getISCSISecretNameAndNamespace(spec, namespace)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if len(secretName) > 0 && len(secretNamespace) > 0 {
|
|
// if secret is provideded, retrieve it
|
|
kubeClient := plugin.host.GetKubeClient()
|
|
if kubeClient == nil {
|
|
return nil, fmt.Errorf("Cannot get kube client")
|
|
}
|
|
secretObj, err := kubeClient.CoreV1().Secrets(secretNamespace).Get(secretName, metav1.GetOptions{})
|
|
if err != nil {
|
|
err = fmt.Errorf("Couldn't get secret %v/%v error: %v", secretNamespace, secretName, err)
|
|
return nil, err
|
|
}
|
|
secret = make(map[string]string)
|
|
for name, data := range secretObj.Data {
|
|
glog.V(4).Infof("retrieving CHAP secret name: %s", name)
|
|
secret[name] = string(data)
|
|
}
|
|
}
|
|
}
|
|
return secret, err
|
|
}
|
|
|
|
func createVolumeFromISCSIVolumeSource(volumeName string, iscsi v1.ISCSIVolumeSource) *v1.Volume {
|
|
return &v1.Volume{
|
|
Name: volumeName,
|
|
VolumeSource: v1.VolumeSource{
|
|
ISCSI: &iscsi,
|
|
},
|
|
}
|
|
}
|
|
|
|
func createPersistentVolumeFromISCSIPVSource(volumeName string, iscsi v1.ISCSIPersistentVolumeSource) *v1.PersistentVolume {
|
|
block := v1.PersistentVolumeBlock
|
|
return &v1.PersistentVolume{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: volumeName,
|
|
},
|
|
Spec: v1.PersistentVolumeSpec{
|
|
PersistentVolumeSource: v1.PersistentVolumeSource{
|
|
ISCSI: &iscsi,
|
|
},
|
|
VolumeMode: &block,
|
|
},
|
|
}
|
|
}
|
|
|
|
func getVolumeSpecFromGlobalMapPath(volumeName, globalMapPath string) (*volume.Spec, error) {
|
|
// Retrieve volume spec information from globalMapPath
|
|
// globalMapPath example:
|
|
// plugins/kubernetes.io/{PluginName}/{DefaultKubeletVolumeDevicesDirName}/{volumePluginDependentPath}
|
|
// plugins/kubernetes.io/iscsi/volumeDevices/iface-default/192.168.0.10:3260-iqn.2017-05.com.example:test-lun-0
|
|
|
|
// device: 192.168.0.10:3260-iqn.2017-05.com.example:test-lun-0
|
|
device, _, err := extractDeviceAndPrefix(globalMapPath)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
bkpPortal, iqn, err := extractPortalAndIqn(device)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
arr := strings.Split(device, "-lun-")
|
|
if len(arr) < 2 {
|
|
return nil, fmt.Errorf("failed to retrieve lun from globalMapPath: %v", globalMapPath)
|
|
}
|
|
lun, err := strconv.Atoi(arr[1])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
iface, found := extractIface(globalMapPath)
|
|
if !found {
|
|
return nil, fmt.Errorf("failed to retrieve iface from globalMapPath: %v", globalMapPath)
|
|
}
|
|
iscsiPV := createPersistentVolumeFromISCSIPVSource(volumeName,
|
|
v1.ISCSIPersistentVolumeSource{
|
|
TargetPortal: bkpPortal,
|
|
IQN: iqn,
|
|
Lun: int32(lun),
|
|
ISCSIInterface: iface,
|
|
},
|
|
)
|
|
glog.V(5).Infof("ConstructBlockVolumeSpec: TargetPortal: %v, IQN: %v, Lun: %v, ISCSIInterface: %v",
|
|
iscsiPV.Spec.PersistentVolumeSource.ISCSI.TargetPortal,
|
|
iscsiPV.Spec.PersistentVolumeSource.ISCSI.IQN,
|
|
iscsiPV.Spec.PersistentVolumeSource.ISCSI.Lun,
|
|
iscsiPV.Spec.PersistentVolumeSource.ISCSI.ISCSIInterface,
|
|
)
|
|
return volume.NewSpecFromPersistentVolume(iscsiPV, false), nil
|
|
}
|