Merge pull request #51498 from NickrenREN/pvc-resize-cinder

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Implement volume resize for cinder

**What this PR does / why we need it**:
resize for cinder
xref: [resize proposal](https://github.com/kubernetes/community/pull/657)

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: xref https://github.com/kubernetes/community/pull/657
Follow up: #49727

**Special notes for your reviewer**:

**Release note**:
```release-note
Implement volume resize for cinder
```

wip, assign to myself first

/assign @NickrenREN

Godeps/Godeps.json

@@ -1574,107 +1574,111 @@
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
+		},
+		{
+			"ImportPath": "github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions",
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/blockstorage/v1/volumes",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/blockstorage/v2/volumes",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/common/extensions",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/attachinterfaces",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/volumeattach",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/compute/v2/flavors",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/compute/v2/images",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/compute/v2/servers",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v2/tenants",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v2/tokens",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v3/extensions/trusts",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v3/tokens",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/layer3/floatingips",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/layer3/routers",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas_v2/listeners",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas_v2/loadbalancers",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas_v2/monitors",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas_v2/pools",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/security/groups",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/security/rules",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/networking/v2/ports",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/utils",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/pagination",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gorilla/context",

Godeps/LICENSES

@@ -53273,6 +53273,205 @@ specific language governing permissions and limitations under the License.
 ================================================================================
 
 
+================================================================================
+= vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions licensed under: =
+
+Copyright 2012-2013 Rackspace, Inc.
+
+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.                                
+
+------
+ 
+				Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+= vendor/github.com/gophercloud/gophercloud/LICENSE dd19699707373c2ca31531a659130416
+================================================================================
+
+
 ================================================================================
 = vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/v1/volumes licensed under: =
 

pkg/cloudprovider/providers/openstack/BUILD

@@ -29,6 +29,7 @@ go_library(
         "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/github.com/gophercloud/gophercloud:go_default_library",
         "//vendor/github.com/gophercloud/gophercloud/openstack:go_default_library",
+        "//vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions:go_default_library",
         "//vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/v1/volumes:go_default_library",
         "//vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/v2/volumes:go_default_library",
         "//vendor/github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/attachinterfaces:go_default_library",
@@ -51,6 +52,7 @@ go_library(
         "//vendor/github.com/prometheus/client_golang/prometheus:go_default_library",
         "//vendor/gopkg.in/gcfg.v1: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/types:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/net:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",

pkg/cloudprovider/providers/openstack/openstack_volumes.go

@@ -24,9 +24,11 @@ import (
 	"strings"
 	"time"
 
+	"k8s.io/apimachinery/pkg/api/resource"
 	k8s_volume "k8s.io/kubernetes/pkg/volume"
 
 	"github.com/gophercloud/gophercloud"
+	volumeexpand "github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions"
 	volumes_v1 "github.com/gophercloud/gophercloud/openstack/blockstorage/v1/volumes"
 	volumes_v2 "github.com/gophercloud/gophercloud/openstack/blockstorage/v2/volumes"
 	"github.com/gophercloud/gophercloud/openstack/compute/v2/extensions/volumeattach"
@@ -39,6 +41,7 @@ type volumeService interface {
 	createVolume(opts VolumeCreateOpts) (string, string, error)
 	getVolume(volumeID string) (Volume, error)
 	deleteVolume(volumeName string) error
+	expandVolume(volumeID string, newSize int) error
 }
 
 // Volumes implementation for v1
@@ -64,6 +67,8 @@ type Volume struct {
 	Name string
 	// Current status of the volume.
 	Status string
+	// Volume size in GB
+	Size int
 }
 
 type VolumeCreateOpts struct {
@@ -139,6 +144,7 @@ func (volumes *VolumesV1) getVolume(volumeID string) (Volume, error) {
 		ID:     volumeV1.ID,
 		Name:   volumeV1.Name,
 		Status: volumeV1.Status,
+		Size:   volumeV1.Size,
 	}
 
 	if len(volumeV1.Attachments) > 0 && volumeV1.Attachments[0]["server_id"] != nil {
@@ -162,6 +168,7 @@ func (volumes *VolumesV2) getVolume(volumeID string) (Volume, error) {
 		ID:     volumeV2.ID,
 		Name:   volumeV2.Name,
 		Status: volumeV2.Status,
+		Size:   volumeV2.Size,
 	}
 
 	if len(volumeV2.Attachments) > 0 {
@@ -188,6 +195,30 @@ func (volumes *VolumesV2) deleteVolume(volumeID string) error {
 	return err
 }
 
+func (volumes *VolumesV1) expandVolume(volumeID string, newSize int) error {
+	startTime := time.Now()
+	create_opts := volumeexpand.ExtendSizeOpts{
+		NewSize: newSize,
+	}
+	err := volumeexpand.ExtendSize(volumes.blockstorage, volumeID, create_opts).ExtractErr()
+	timeTaken := time.Since(startTime).Seconds()
+	recordOpenstackOperationMetric("expand_volume", timeTaken, err)
+
+	return err
+}
+
+func (volumes *VolumesV2) expandVolume(volumeID string, newSize int) error {
+	startTime := time.Now()
+	create_opts := volumeexpand.ExtendSizeOpts{
+		NewSize: newSize,
+	}
+	err := volumeexpand.ExtendSize(volumes.blockstorage, volumeID, create_opts).ExtractErr()
+	timeTaken := time.Since(startTime).Seconds()
+	recordOpenstackOperationMetric("expand_volume", timeTaken, err)
+
+	return err
+}
+
 func (os *OpenStack) OperationPending(diskName string) (bool, string, error) {
 	volume, err := os.getVolume(diskName)
 	if err != nil {
@@ -274,6 +305,39 @@ func (os *OpenStack) DetachDisk(instanceID, volumeID string) error {
 	return nil
 }
 
+// ExpandVolume expands the size of specific cinder volume (in GiB)
+func (os *OpenStack) ExpandVolume(volumeID string, oldSize resource.Quantity, newSize resource.Quantity) (resource.Quantity, error) {
+	volume, err := os.getVolume(volumeID)
+	if err != nil {
+		return oldSize, err
+	}
+	if volume.Status != VolumeAvailableStatus {
+		// cinder volume can not be expanded if its status is not available
+		return oldSize, fmt.Errorf("volume status is not available")
+	}
+
+	volSizeBytes := newSize.Value()
+	// Cinder works with gigabytes, convert to GiB with rounding up
+	volSizeGB := int(k8s_volume.RoundUpSize(volSizeBytes, 1024*1024*1024))
+	newSizeQuant := resource.MustParse(fmt.Sprintf("%dGi", volSizeGB))
+
+	// if volume size equals to or greater than the newSize, return nil
+	if volume.Size >= volSizeGB {
+		return newSizeQuant, nil
+	}
+
+	volumes, err := os.volumeService("")
+	if err != nil {
+		return oldSize, err
+	}
+
+	err = volumes.expandVolume(volumeID, volSizeGB)
+	if err != nil {
+		return oldSize, err
+	}
+	return newSizeQuant, nil
+}
+
 // getVolume retrieves Volume by its ID.
 func (os *OpenStack) getVolume(volumeID string) (Volume, error) {
 	volumes, err := os.volumeService("")

pkg/volume/cinder/BUILD

@@ -52,6 +52,7 @@ go_test(
         "//pkg/volume/testing: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/types:go_default_library",
         "//vendor/k8s.io/client-go/util/testing:go_default_library",
     ],

pkg/volume/cinder/attacher_test.go

@@ -22,6 +22,7 @@ import (
 	"testing"
 
 	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/resource"
 	"k8s.io/kubernetes/pkg/cloudprovider"
 	"k8s.io/kubernetes/pkg/volume"
 	volumetest "k8s.io/kubernetes/pkg/volume/testing"
@@ -583,6 +584,10 @@ func (testcase *testcase) InstanceID() (string, error) {
 	return testcase.instanceID, nil
 }
 
+func (testcase *testcase) ExpandVolume(volumeID string, oldSize resource.Quantity, newSize resource.Quantity) (resource.Quantity, error) {
+	return resource.Quantity{}, nil
+}
+
 func (testcase *testcase) DeleteVolume(volumeID string) error {
 	return errors.New("Not implemented")
 }

pkg/volume/cinder/cinder.go

@@ -55,6 +55,7 @@ type CinderProvider interface {
 	DisksAreAttached(instanceID string, volumeIDs []string) (map[string]bool, error)
 	ShouldTrustDevicePath() bool
 	Instances() (cloudprovider.Instances, bool)
+	ExpandVolume(volumeID string, oldSize resource.Quantity, newSize resource.Quantity) (resource.Quantity, error)
 }
 
 type cinderPlugin struct {
@@ -227,6 +228,31 @@ func (plugin *cinderPlugin) ConstructVolumeSpec(volumeName, mountPath string) (*
 	return volume.NewSpecFromVolume(cinderVolume), nil
 }
 
+var _ volume.ExpandableVolumePlugin = &cinderPlugin{}
+
+func (plugin *cinderPlugin) ExpandVolumeDevice(spec *volume.Spec, newSize resource.Quantity, oldSize resource.Quantity) (resource.Quantity, error) {
+	cinder, _, err := getVolumeSource(spec)
+	if err != nil {
+		return oldSize, err
+	}
+	cloud, err := plugin.getCloudProvider()
+	if err != nil {
+		return oldSize, err
+	}
+
+	expandedSize, err := cloud.ExpandVolume(cinder.VolumeID, oldSize, newSize)
+	if err != nil {
+		return oldSize, err
+	}
+
+	glog.V(2).Infof("volume %s expanded to new size %d successfully", cinder.VolumeID, int(newSize.Value()))
+	return expandedSize, nil
+}
+
+func (plugin *cinderPlugin) RequiresFSResize() bool {
+	return true
+}
+
 // Abstract interface to PD operations.
 type cdManager interface {
 	// Attaches the disk to the kubelet's host machine.

plugin/pkg/admission/persistentvolume/resize/admission.go

@@ -152,6 +152,9 @@ func (pvcr *persistentVolumeClaimResize) checkVolumePlugin(pv *api.PersistentVol
 	if pv.Spec.Glusterfs != nil {
 		return true
 	}
+	if pv.Spec.Cinder != nil {
+		return true
+	}
 	return false
 
 }

staging/src/k8s.io/apiserver/Godeps/Godeps.json

@@ -408,31 +408,31 @@
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v2/tenants",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v2/tokens",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v3/tokens",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/utils",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/pagination",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gregjones/httpcache",

staging/src/k8s.io/client-go/Godeps/Godeps.json

@@ -172,31 +172,31 @@
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v2/tenants",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v2/tokens",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/identity/v3/tokens",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/openstack/utils",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gophercloud/gophercloud/pagination",
-			"Rev": "0b6b13c4dd9e07a89f83cbe4617c13ad646d6362"
+			"Rev": "54086d6c81b90e91e1d52b866ee726baf5cbe2b1"
 		},
 		{
 			"ImportPath": "github.com/gregjones/httpcache",

vendor/github.com/gophercloud/gophercloud/openstack/BUILD

@@ -30,6 +30,7 @@ filegroup(
     name = "all-srcs",
     srcs = [
         ":package-srcs",
+        "//vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions:all-srcs",
         "//vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/v1/volumes:all-srcs",
         "//vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/v2/volumes:all-srcs",
         "//vendor/github.com/gophercloud/gophercloud/openstack/common/extensions:all-srcs",

vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions/BUILD

@@ -0,0 +1,28 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "requests.go",
+        "results.go",
+        "urls.go",
+    ],
+    importpath = "github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions",
+    visibility = ["//visibility:public"],
+    deps = ["//vendor/github.com/gophercloud/gophercloud:go_default_library"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions/doc.go

@@ -0,0 +1,86 @@
+/*
+Package volumeactions provides information and interaction with volumes in the
+OpenStack Block Storage service. A volume is a detachable block storage
+device, akin to a USB hard drive.
+
+Example of Attaching a Volume to an Instance
+
+	attachOpts := volumeactions.AttachOpts{
+		MountPoint:   "/mnt",
+		Mode:         "rw",
+		InstanceUUID: server.ID,
+	}
+
+	err := volumeactions.Attach(client, volume.ID, attachOpts).ExtractErr()
+	if err != nil {
+		panic(err)
+	}
+
+	detachOpts := volumeactions.DetachOpts{
+		AttachmentID: volume.Attachments[0].AttachmentID,
+	}
+
+	err = volumeactions.Detach(client, volume.ID, detachOpts).ExtractErr()
+	if err != nil {
+		panic(err)
+	}
+
+
+Example of Creating an Image from a Volume
+
+	uploadImageOpts := volumeactions.UploadImageOpts{
+		ImageName: "my_vol",
+		Force:     true,
+	}
+
+	volumeImage, err := volumeactions.UploadImage(client, volume.ID, uploadImageOpts).Extract()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%+v\n", volumeImage)
+
+Example of Extending a Volume's Size
+
+	extendOpts := volumeactions.ExtendSizeOpts{
+		NewSize: 100,
+	}
+
+	err := volumeactions.ExtendSize(client, volume.ID, extendOpts).ExtractErr()
+	if err != nil {
+		panic(err)
+	}
+
+Example of Initializing a Volume Connection
+
+	connectOpts := &volumeactions.InitializeConnectionOpts{
+		IP:        "127.0.0.1",
+		Host:      "stack",
+		Initiator: "iqn.1994-05.com.redhat:17cf566367d2",
+		Multipath: gophercloud.Disabled,
+		Platform:  "x86_64",
+		OSType:    "linux2",
+	}
+
+	connectionInfo, err := volumeactions.InitializeConnection(client, volume.ID, connectOpts).Extract()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%+v\n", connectionInfo["data"])
+
+	terminateOpts := &volumeactions.InitializeConnectionOpts{
+		IP:        "127.0.0.1",
+		Host:      "stack",
+		Initiator: "iqn.1994-05.com.redhat:17cf566367d2",
+		Multipath: gophercloud.Disabled,
+		Platform:  "x86_64",
+		OSType:    "linux2",
+	}
+
+	err = volumeactions.TerminateConnection(client, volume.ID, terminateOpts).ExtractErr()
+	if err != nil {
+		panic(err)
+	}
+*/
+package volumeactions

vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions/requests.go

@@ -0,0 +1,263 @@
+package volumeactions
+
+import (
+	"github.com/gophercloud/gophercloud"
+)
+
+// AttachOptsBuilder allows extensions to add additional parameters to the
+// Attach request.
+type AttachOptsBuilder interface {
+	ToVolumeAttachMap() (map[string]interface{}, error)
+}
+
+// AttachMode describes the attachment mode for volumes.
+type AttachMode string
+
+// These constants determine how a volume is attached.
+const (
+	ReadOnly  AttachMode = "ro"
+	ReadWrite AttachMode = "rw"
+)
+
+// AttachOpts contains options for attaching a Volume.
+type AttachOpts struct {
+	// The mountpoint of this volume.
+	MountPoint string `json:"mountpoint,omitempty"`
+
+	// The nova instance ID, can't set simultaneously with HostName.
+	InstanceUUID string `json:"instance_uuid,omitempty"`
+
+	// The hostname of baremetal host, can't set simultaneously with InstanceUUID.
+	HostName string `json:"host_name,omitempty"`
+
+	// Mount mode of this volume.
+	Mode AttachMode `json:"mode,omitempty"`
+}
+
+// ToVolumeAttachMap assembles a request body based on the contents of a
+// AttachOpts.
+func (opts AttachOpts) ToVolumeAttachMap() (map[string]interface{}, error) {
+	return gophercloud.BuildRequestBody(opts, "os-attach")
+}
+
+// Attach will attach a volume based on the values in AttachOpts.
+func Attach(client *gophercloud.ServiceClient, id string, opts AttachOptsBuilder) (r AttachResult) {
+	b, err := opts.ToVolumeAttachMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(attachURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}
+
+// BeginDetach will mark the volume as detaching.
+func BeginDetaching(client *gophercloud.ServiceClient, id string) (r BeginDetachingResult) {
+	b := map[string]interface{}{"os-begin_detaching": make(map[string]interface{})}
+	_, r.Err = client.Post(beginDetachingURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}
+
+// DetachOptsBuilder allows extensions to add additional parameters to the
+// Detach request.
+type DetachOptsBuilder interface {
+	ToVolumeDetachMap() (map[string]interface{}, error)
+}
+
+// DetachOpts contains options for detaching a Volume.
+type DetachOpts struct {
+	// AttachmentID is the ID of the attachment between a volume and instance.
+	AttachmentID string `json:"attachment_id,omitempty"`
+}
+
+// ToVolumeDetachMap assembles a request body based on the contents of a
+// DetachOpts.
+func (opts DetachOpts) ToVolumeDetachMap() (map[string]interface{}, error) {
+	return gophercloud.BuildRequestBody(opts, "os-detach")
+}
+
+// Detach will detach a volume based on volume ID.
+func Detach(client *gophercloud.ServiceClient, id string, opts DetachOptsBuilder) (r DetachResult) {
+	b, err := opts.ToVolumeDetachMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(detachURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}
+
+// Reserve will reserve a volume based on volume ID.
+func Reserve(client *gophercloud.ServiceClient, id string) (r ReserveResult) {
+	b := map[string]interface{}{"os-reserve": make(map[string]interface{})}
+	_, r.Err = client.Post(reserveURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{200, 201, 202},
+	})
+	return
+}
+
+// Unreserve will unreserve a volume based on volume ID.
+func Unreserve(client *gophercloud.ServiceClient, id string) (r UnreserveResult) {
+	b := map[string]interface{}{"os-unreserve": make(map[string]interface{})}
+	_, r.Err = client.Post(unreserveURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{200, 201, 202},
+	})
+	return
+}
+
+// InitializeConnectionOptsBuilder allows extensions to add additional parameters to the
+// InitializeConnection request.
+type InitializeConnectionOptsBuilder interface {
+	ToVolumeInitializeConnectionMap() (map[string]interface{}, error)
+}
+
+// InitializeConnectionOpts hosts options for InitializeConnection.
+// The fields are specific to the storage driver in use and the destination
+// attachment.
+type InitializeConnectionOpts struct {
+	IP        string   `json:"ip,omitempty"`
+	Host      string   `json:"host,omitempty"`
+	Initiator string   `json:"initiator,omitempty"`
+	Wwpns     []string `json:"wwpns,omitempty"`
+	Wwnns     string   `json:"wwnns,omitempty"`
+	Multipath *bool    `json:"multipath,omitempty"`
+	Platform  string   `json:"platform,omitempty"`
+	OSType    string   `json:"os_type,omitempty"`
+}
+
+// ToVolumeInitializeConnectionMap assembles a request body based on the contents of a
+// InitializeConnectionOpts.
+func (opts InitializeConnectionOpts) ToVolumeInitializeConnectionMap() (map[string]interface{}, error) {
+	b, err := gophercloud.BuildRequestBody(opts, "connector")
+	return map[string]interface{}{"os-initialize_connection": b}, err
+}
+
+// InitializeConnection initializes an iSCSI connection by volume ID.
+func InitializeConnection(client *gophercloud.ServiceClient, id string, opts InitializeConnectionOptsBuilder) (r InitializeConnectionResult) {
+	b, err := opts.ToVolumeInitializeConnectionMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(initializeConnectionURL(client, id), b, &r.Body, &gophercloud.RequestOpts{
+		OkCodes: []int{200, 201, 202},
+	})
+	return
+}
+
+// TerminateConnectionOptsBuilder allows extensions to add additional parameters to the
+// TerminateConnection request.
+type TerminateConnectionOptsBuilder interface {
+	ToVolumeTerminateConnectionMap() (map[string]interface{}, error)
+}
+
+// TerminateConnectionOpts hosts options for TerminateConnection.
+type TerminateConnectionOpts struct {
+	IP        string   `json:"ip,omitempty"`
+	Host      string   `json:"host,omitempty"`
+	Initiator string   `json:"initiator,omitempty"`
+	Wwpns     []string `json:"wwpns,omitempty"`
+	Wwnns     string   `json:"wwnns,omitempty"`
+	Multipath *bool    `json:"multipath,omitempty"`
+	Platform  string   `json:"platform,omitempty"`
+	OSType    string   `json:"os_type,omitempty"`
+}
+
+// ToVolumeTerminateConnectionMap assembles a request body based on the contents of a
+// TerminateConnectionOpts.
+func (opts TerminateConnectionOpts) ToVolumeTerminateConnectionMap() (map[string]interface{}, error) {
+	b, err := gophercloud.BuildRequestBody(opts, "connector")
+	return map[string]interface{}{"os-terminate_connection": b}, err
+}
+
+// TerminateConnection terminates an iSCSI connection by volume ID.
+func TerminateConnection(client *gophercloud.ServiceClient, id string, opts TerminateConnectionOptsBuilder) (r TerminateConnectionResult) {
+	b, err := opts.ToVolumeTerminateConnectionMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(teminateConnectionURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}
+
+// ExtendSizeOptsBuilder allows extensions to add additional parameters to the
+// ExtendSize request.
+type ExtendSizeOptsBuilder interface {
+	ToVolumeExtendSizeMap() (map[string]interface{}, error)
+}
+
+// ExtendSizeOpts contains options for extending the size of an existing Volume.
+// This object is passed to the volumes.ExtendSize function.
+type ExtendSizeOpts struct {
+	// NewSize is the new size of the volume, in GB.
+	NewSize int `json:"new_size" required:"true"`
+}
+
+// ToVolumeExtendSizeMap assembles a request body based on the contents of an
+// ExtendSizeOpts.
+func (opts ExtendSizeOpts) ToVolumeExtendSizeMap() (map[string]interface{}, error) {
+	return gophercloud.BuildRequestBody(opts, "os-extend")
+}
+
+// ExtendSize will extend the size of the volume based on the provided information.
+// This operation does not return a response body.
+func ExtendSize(client *gophercloud.ServiceClient, id string, opts ExtendSizeOptsBuilder) (r ExtendSizeResult) {
+	b, err := opts.ToVolumeExtendSizeMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(extendSizeURL(client, id), b, nil, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}
+
+// UploadImageOptsBuilder allows extensions to add additional parameters to the
+// UploadImage request.
+type UploadImageOptsBuilder interface {
+	ToVolumeUploadImageMap() (map[string]interface{}, error)
+}
+
+// UploadImageOpts contains options for uploading a Volume to image storage.
+type UploadImageOpts struct {
+	// Container format, may be bare, ofv, ova, etc.
+	ContainerFormat string `json:"container_format,omitempty"`
+
+	// Disk format, may be raw, qcow2, vhd, vdi, vmdk, etc.
+	DiskFormat string `json:"disk_format,omitempty"`
+
+	// The name of image that will be stored in glance.
+	ImageName string `json:"image_name,omitempty"`
+
+	// Force image creation, usable if volume attached to instance.
+	Force bool `json:"force,omitempty"`
+}
+
+// ToVolumeUploadImageMap assembles a request body based on the contents of a
+// UploadImageOpts.
+func (opts UploadImageOpts) ToVolumeUploadImageMap() (map[string]interface{}, error) {
+	return gophercloud.BuildRequestBody(opts, "os-volume_upload_image")
+}
+
+// UploadImage will upload an image based on the values in UploadImageOptsBuilder.
+func UploadImage(client *gophercloud.ServiceClient, id string, opts UploadImageOptsBuilder) (r UploadImageResult) {
+	b, err := opts.ToVolumeUploadImageMap()
+	if err != nil {
+		r.Err = err
+		return
+	}
+	_, r.Err = client.Post(uploadURL(client, id), b, &r.Body, &gophercloud.RequestOpts{
+		OkCodes: []int{202},
+	})
+	return
+}

vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions/results.go

@@ -0,0 +1,186 @@
+package volumeactions
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/gophercloud/gophercloud"
+)
+
+// AttachResult contains the response body and error from an Attach request.
+type AttachResult struct {
+	gophercloud.ErrResult
+}
+
+// BeginDetachingResult contains the response body and error from a BeginDetach
+// request.
+type BeginDetachingResult struct {
+	gophercloud.ErrResult
+}
+
+// DetachResult contains the response body and error from a Detach request.
+type DetachResult struct {
+	gophercloud.ErrResult
+}
+
+// UploadImageResult contains the response body and error from an UploadImage
+// request.
+type UploadImageResult struct {
+	gophercloud.Result
+}
+
+// ReserveResult contains the response body and error from a Reserve request.
+type ReserveResult struct {
+	gophercloud.ErrResult
+}
+
+// UnreserveResult contains the response body and error from an Unreserve
+// request.
+type UnreserveResult struct {
+	gophercloud.ErrResult
+}
+
+// TerminateConnectionResult contains the response body and error from a
+// TerminateConnection request.
+type TerminateConnectionResult struct {
+	gophercloud.ErrResult
+}
+
+// InitializeConnectionResult contains the response body and error from an
+// InitializeConnection request.
+type InitializeConnectionResult struct {
+	gophercloud.Result
+}
+
+// ExtendSizeResult contains the response body and error from an ExtendSize request.
+type ExtendSizeResult struct {
+	gophercloud.ErrResult
+}
+
+// Extract will get the connection information out of the
+// InitializeConnectionResult object.
+//
+// This will be a generic map[string]interface{} and the results will be
+// dependent on the type of connection made.
+func (r InitializeConnectionResult) Extract() (map[string]interface{}, error) {
+	var s struct {
+		ConnectionInfo map[string]interface{} `json:"connection_info"`
+	}
+	err := r.ExtractInto(&s)
+	return s.ConnectionInfo, err
+}
+
+// ImageVolumeType contains volume type information obtained from UploadImage
+// action.
+type ImageVolumeType struct {
+	// The ID of a volume type.
+	ID string `json:"id"`
+
+	// Human-readable display name for the volume type.
+	Name string `json:"name"`
+
+	// Human-readable description for the volume type.
+	Description string `json:"display_description"`
+
+	// Flag for public access.
+	IsPublic bool `json:"is_public"`
+
+	// Extra specifications for volume type.
+	ExtraSpecs map[string]interface{} `json:"extra_specs"`
+
+	// ID of quality of service specs.
+	QosSpecsID string `json:"qos_specs_id"`
+
+	// Flag for deletion status of volume type.
+	Deleted bool `json:"deleted"`
+
+	// The date when volume type was deleted.
+	DeletedAt time.Time `json:"-"`
+
+	// The date when volume type was created.
+	CreatedAt time.Time `json:"-"`
+
+	// The date when this volume was last updated.
+	UpdatedAt time.Time `json:"-"`
+}
+
+func (r *ImageVolumeType) UnmarshalJSON(b []byte) error {
+	type tmp ImageVolumeType
+	var s struct {
+		tmp
+		CreatedAt gophercloud.JSONRFC3339MilliNoZ `json:"created_at"`
+		UpdatedAt gophercloud.JSONRFC3339MilliNoZ `json:"updated_at"`
+		DeletedAt gophercloud.JSONRFC3339MilliNoZ `json:"deleted_at"`
+	}
+	err := json.Unmarshal(b, &s)
+	if err != nil {
+		return err
+	}
+	*r = ImageVolumeType(s.tmp)
+
+	r.CreatedAt = time.Time(s.CreatedAt)
+	r.UpdatedAt = time.Time(s.UpdatedAt)
+	r.DeletedAt = time.Time(s.DeletedAt)
+
+	return err
+}
+
+// VolumeImage contains information about volume uploaded to an image service.
+type VolumeImage struct {
+	// The ID of a volume an image is created from.
+	VolumeID string `json:"id"`
+
+	// Container format, may be bare, ofv, ova, etc.
+	ContainerFormat string `json:"container_format"`
+
+	// Disk format, may be raw, qcow2, vhd, vdi, vmdk, etc.
+	DiskFormat string `json:"disk_format"`
+
+	// Human-readable description for the volume.
+	Description string `json:"display_description"`
+
+	// The ID of the created image.
+	ImageID string `json:"image_id"`
+
+	// Human-readable display name for the image.
+	ImageName string `json:"image_name"`
+
+	// Size of the volume in GB.
+	Size int `json:"size"`
+
+	// Current status of the volume.
+	Status string `json:"status"`
+
+	// The date when this volume was last updated.
+	UpdatedAt time.Time `json:"-"`
+
+	// Volume type object of used volume.
+	VolumeType ImageVolumeType `json:"volume_type"`
+}
+
+func (r *VolumeImage) UnmarshalJSON(b []byte) error {
+	type tmp VolumeImage
+	var s struct {
+		tmp
+		UpdatedAt gophercloud.JSONRFC3339MilliNoZ `json:"updated_at"`
+	}
+	err := json.Unmarshal(b, &s)
+	if err != nil {
+		return err
+	}
+	*r = VolumeImage(s.tmp)
+
+	r.UpdatedAt = time.Time(s.UpdatedAt)
+
+	return err
+}
+
+// Extract will get an object with info about the uploaded image out of the
+// UploadImageResult object.
+func (r UploadImageResult) Extract() (VolumeImage, error) {
+	var s struct {
+		VolumeImage VolumeImage `json:"os-volume_upload_image"`
+	}
+	err := r.ExtractInto(&s)
+	return s.VolumeImage, err
+}

vendor/github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/volumeactions/urls.go

@@ -0,0 +1,39 @@
+package volumeactions
+
+import "github.com/gophercloud/gophercloud"
+
+func attachURL(c *gophercloud.ServiceClient, id string) string {
+	return c.ServiceURL("volumes", id, "action")
+}
+
+func beginDetachingURL(c *gophercloud.ServiceClient, id string) string {
+	return attachURL(c, id)
+}
+
+func detachURL(c *gophercloud.ServiceClient, id string) string {
+	return attachURL(c, id)
+}
+
+func uploadURL(c *gophercloud.ServiceClient, id string) string {
+	return attachURL(c, id)
+}
+
+func reserveURL(c *gophercloud.ServiceClient, id string) string {
+	return attachURL(c, id)
+}
+
+func unreserveURL(c *gophercloud.ServiceClient, id string) string {
+	return attachURL(c, id)
+}
+
+func initializeConnectionURL(c *gophercloud.ServiceClient, id string) string {
+	return attachURL(c, id)
+}
+
+func teminateConnectionURL(c *gophercloud.ServiceClient, id string) string {
+	return attachURL(c, id)
+}
+
+func extendSizeURL(c *gophercloud.ServiceClient, id string) string {
+	return attachURL(c, id)
+}