add possibility to ignore volume label in dynamic provisioning

pkg/cloudprovider/providers/openstack/openstack.go

@@ -94,6 +94,7 @@ type LoadBalancerOpts struct {
 type BlockStorageOpts struct {
 	BSVersion       string `gcfg:"bs-version"`        // overrides autodetection. v1 or v2. Defaults to auto
 	TrustDevicePath bool   `gcfg:"trust-device-path"` // See Issue #33128
+	IgnoreVolumeAZ  bool   `gcfg:"ignore-volume-az"`
 }
 
 type RouterOpts struct {
@@ -187,6 +188,7 @@ func readConfig(config io.Reader) (Config, error) {
 	// Set default values for config params
 	cfg.BlockStorage.BSVersion = "auto"
 	cfg.BlockStorage.TrustDevicePath = false
+	cfg.BlockStorage.IgnoreVolumeAZ = false
 	cfg.Metadata.SearchOrder = fmt.Sprintf("%s,%s", configDriveID, metadataID)
 
 	err := gcfg.ReadInto(&cfg, config)

pkg/cloudprovider/providers/openstack/openstack_test.go

@@ -101,6 +101,7 @@ func TestReadConfig(t *testing.T) {
  [BlockStorage]
  bs-version = auto
  trust-device-path = yes
+ ignore-volume-az = yes
  [Metadata]
  search-order = configDrive, metadataService
  `))
@@ -129,6 +130,9 @@ func TestReadConfig(t *testing.T) {
 	if cfg.BlockStorage.BSVersion != "auto" {
 		t.Errorf("incorrect bs.bs-version: %v", cfg.BlockStorage.BSVersion)
 	}
+	if cfg.BlockStorage.IgnoreVolumeAZ != true {
+		t.Errorf("incorrect bs.IgnoreVolumeAZ: %v", cfg.BlockStorage.IgnoreVolumeAZ)
+	}
 	if cfg.Metadata.SearchOrder != "configDrive, metadataService" {
 		t.Errorf("incorrect md.search-order: %v", cfg.Metadata.SearchOrder)
 	}
@@ -514,7 +518,7 @@ func TestVolumes(t *testing.T) {
 	tags := map[string]string{
 		"test": "value",
 	}
-	vol, _, err := os.CreateVolume("kubernetes-test-volume-"+rand.String(10), 1, "", "", &tags)
+	vol, _, _, err := os.CreateVolume("kubernetes-test-volume-"+rand.String(10), 1, "", "", &tags)
 	if err != nil {
 		t.Fatalf("Cannot create a new Cinder volume: %v", err)
 	}

pkg/cloudprovider/providers/openstack/openstack_volumes.go

@@ -299,11 +299,11 @@ func (os *OpenStack) getVolume(volumeID string) (Volume, error) {
 }
 
 // CreateVolume creates a volume of given size (in GiB)
-func (os *OpenStack) CreateVolume(name string, size int, vtype, availability string, tags *map[string]string) (string, string, error) {
+func (os *OpenStack) CreateVolume(name string, size int, vtype, availability string, tags *map[string]string) (string, string, bool, error) {
 	volumes, err := os.volumeService("")
 	if err != nil || volumes == nil {
 		glog.Errorf("Unable to initialize cinder client for region: %s", os.region)
-		return "", "", err
+		return "", "", os.bsOpts.IgnoreVolumeAZ, err
 	}
 
 	opts := VolumeCreateOpts{
@@ -320,11 +320,11 @@ func (os *OpenStack) CreateVolume(name string, size int, vtype, availability str
 
 	if err != nil {
 		glog.Errorf("Failed to create a %d GB volume: %v", size, err)
-		return "", "", err
+		return "", "", os.bsOpts.IgnoreVolumeAZ, err
 	}
 
-	glog.Infof("Created volume %v in Availability Zone: %v", volumeID, volumeAZ)
-	return volumeID, volumeAZ, nil
+	glog.Infof("Created volume %v in Availability Zone: %v Ignore volume AZ: %v", volumeID, volumeAZ, os.bsOpts.IgnoreVolumeAZ)
+	return volumeID, volumeAZ, os.bsOpts.IgnoreVolumeAZ, nil
 }
 
 // GetDevicePath returns the path of an attached block storage volume, specified by its id.

pkg/volume/cinder/attacher_test.go

@@ -571,8 +571,8 @@ func (testcase *testcase) ShouldTrustDevicePath() bool {
 	return true
 }
 
-func (testcase *testcase) CreateVolume(name string, size int, vtype, availability string, tags *map[string]string) (string, string, error) {
-	return "", "", errors.New("Not implemented")
+func (testcase *testcase) CreateVolume(name string, size int, vtype, availability string, tags *map[string]string) (string, string, bool, error) {
+	return "", "", false, errors.New("Not implemented")
 }
 
 func (testcase *testcase) GetDevicePath(volumeID string) string {

pkg/volume/cinder/cinder.go

@@ -46,7 +46,7 @@ type CinderProvider interface {
 	AttachDisk(instanceID, volumeID string) (string, error)
 	DetachDisk(instanceID, volumeID string) error
 	DeleteVolume(volumeID string) error
-	CreateVolume(name string, size int, vtype, availability string, tags *map[string]string) (string, string, error)
+	CreateVolume(name string, size int, vtype, availability string, tags *map[string]string) (string, string, bool, error)
 	GetDevicePath(volumeID string) string
 	InstanceID() (string, error)
 	GetAttachmentDiskPath(instanceID, volumeID string) (string, error)

pkg/volume/cinder/cinder_util.go

@@ -204,7 +204,7 @@ func (util *CinderDiskUtil) CreateVolume(c *cinderVolumeProvisioner) (volumeID s
 		}
 	}
 
-	volumeID, volumeAZ, errr := cloud.CreateVolume(name, volSizeGB, vtype, availability, c.options.CloudTags)
+	volumeID, volumeAZ, IgnoreVolumeAZ, errr := cloud.CreateVolume(name, volSizeGB, vtype, availability, c.options.CloudTags)
 	if errr != nil {
 		glog.V(2).Infof("Error creating cinder volume: %v", errr)
 		return "", 0, nil, "", errr
@@ -213,8 +213,9 @@ func (util *CinderDiskUtil) CreateVolume(c *cinderVolumeProvisioner) (volumeID s
 
 	// these are needed that pod is spawning to same AZ
 	volumeLabels = make(map[string]string)
-	volumeLabels[kubeletapis.LabelZoneFailureDomain] = volumeAZ
-
+	if IgnoreVolumeAZ == false {
+		volumeLabels[kubeletapis.LabelZoneFailureDomain] = volumeAZ
+	}
 	return volumeID, volSizeGB, volumeLabels, fstype, nil
 }