Merge pull request #1814 from nabokihms/local-storage-labels

feat: Add local storage labels to kube_persistentvolume_info
kubernetes · Aug 24, 2022 · ebc0e18 · ebc0e18
2 parents 6dfeab3 + 9e639b2
commit ebc0e18
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diff --git a/docs/persistentvolume-metrics.md b/docs/persistentvolume-metrics.md
@@ -7,6 +7,6 @@
 | kube_persistentvolume_status_phase | Gauge | | | `persistentvolume`=&lt;pv-name&gt; <br>`phase`=&lt;Bound\|Failed\|Pending\|Available\|Released&gt; | STABLE |
 | kube_persistentvolume_claim_ref | Gauge | | | `persistentvolume`=&lt;pv-name&gt; <br>`claim_namespace`=&lt;<namespace>&gt; <br>`name`=&lt;<name>&gt; | STABLE |
 | kube_persistentvolume_labels | Gauge | | | `persistentvolume`=&lt;persistentvolume-name&gt; <br> `label_PERSISTENTVOLUME_LABEL`=&lt;PERSISTENTVOLUME_LABEL&gt; | STABLE |
-| kube_persistentvolume_info | Gauge | | | `persistentvolume`=&lt;pv-name&gt; <br> `storageclass`=&lt;storageclass-name&gt; <br> `gce_persistent_disk_name`=&lt;pd-name&gt; <br> `ebs_volume_id`=&lt;ebs-volume-id&gt; <br> `azure_disk_name`=&lt;azure-disk-name&gt; <br> `fc_wwids`=&lt;fc-wwids-comma-separated&gt; <br> `fc_lun`=&lt;fc-lun&gt; <br> `fc_target_wwns`=&lt;fc-target-wwns-comma-separated&gt; <br> `iscsi_target_portal`=&lt;iscsi-target-portal&gt; <br> `iscsi_iqn`=&lt;iscsi-iqn&gt; <br> `iscsi_lun`=&lt;iscsi-lun&gt; <br> `iscsi_initiator_name`=&lt;iscsi-initiator-name&gt; <br> `nfs_server`=&lt;nfs-server&gt; <br> `nfs_path`=&lt;nfs-path&gt; <br> `csi_driver`=&lt;csi-driver&gt; <br> `csi_volume_handle`=&lt;csi-volume-handle&gt; | STABLE |
+| kube_persistentvolume_info | Gauge | | | `persistentvolume`=&lt;pv-name&gt; <br> `storageclass`=&lt;storageclass-name&gt; <br> `gce_persistent_disk_name`=&lt;pd-name&gt; <br> `host_path`=&lt;path-of-a-host-volume&gt; <br> `host_path_type`=&lt;host-mount-type&gt; <br> `ebs_volume_id`=&lt;ebs-volume-id&gt; <br> `azure_disk_name`=&lt;azure-disk-name&gt; <br> `fc_wwids`=&lt;fc-wwids-comma-separated&gt; <br> `fc_lun`=&lt;fc-lun&gt; <br> `fc_target_wwns`=&lt;fc-target-wwns-comma-separated&gt; <br> `iscsi_target_portal`=&lt;iscsi-target-portal&gt; <br> `iscsi_iqn`=&lt;iscsi-iqn&gt; <br> `iscsi_lun`=&lt;iscsi-lun&gt; <br> `iscsi_initiator_name`=&lt;iscsi-initiator-name&gt; <br> `local_path`=&lt;path-of-a-local-volume&gt; <br> `local_fs`=&lt;local-volume-fs-type&gt; <br> `nfs_server`=&lt;nfs-server&gt; <br> `nfs_path`=&lt;nfs-path&gt; <br> `csi_driver`=&lt;csi-driver&gt; <br> `csi_volume_handle`=&lt;csi-volume-handle&gt; | STABLE |
 | kube_persistentvolume_created | Gauge | Unix Creation Timestamp | seconds | `persistentvolume`=&lt;persistentvolume-name&gt; <br> | EXPERIMENTAL |
 
diff --git a/internal/store/persistentvolume.go b/internal/store/persistentvolume.go
@@ -164,7 +164,17 @@ func persistentVolumeMetricFamilies(allowAnnotationsList, allowLabelsList []stri
 			metric.Gauge,
 			"",
 			wrapPersistentVolumeFunc(func(p *v1.PersistentVolume) *metric.Family {
-				var gcePDDiskName, ebsVolumeID, azureDiskName, fcWWIDs, fcLun, fcTargetWWNs, iscsiTargetPortal, iscsiIQN, iscsiLun, iscsiInitiatorName, nfsServer, nfsPath, csiDriver, csiVolumeHandle string
+				var (
+					gcePDDiskName,
+					ebsVolumeID,
+					azureDiskName,
+					fcWWIDs, fcLun, fcTargetWWNs,
+					iscsiTargetPortal, iscsiIQN, iscsiLun, iscsiInitiatorName,
+					nfsServer, nfsPath,
+					csiDriver, csiVolumeHandle,
+					localFS, localPath,
+					hostPath, hostPathType string
+				)
 
 				switch {
 				case p.Spec.PersistentVolumeSource.GCEPersistentDisk != nil:
@@ -202,6 +212,16 @@ func persistentVolumeMetricFamilies(allowAnnotationsList, allowLabelsList []stri
 				case p.Spec.PersistentVolumeSource.CSI != nil:
 					csiDriver = p.Spec.PersistentVolumeSource.CSI.Driver
 					csiVolumeHandle = p.Spec.PersistentVolumeSource.CSI.VolumeHandle
+				case p.Spec.PersistentVolumeSource.Local != nil:
+					localPath = p.Spec.PersistentVolumeSource.Local.Path
+					if p.Spec.PersistentVolumeSource.Local.FSType != nil {
+						localFS = *p.Spec.PersistentVolumeSource.Local.FSType
+					}
+				case p.Spec.PersistentVolumeSource.HostPath != nil:
+					hostPath = p.Spec.PersistentVolumeSource.HostPath.Path
+					if p.Spec.PersistentVolumeSource.HostPath.Type != nil {
+						hostPathType = string(*p.Spec.PersistentVolumeSource.HostPath.Type)
+					}
 				}
 
 				return &metric.Family{
@@ -223,6 +243,10 @@ func persistentVolumeMetricFamilies(allowAnnotationsList, allowLabelsList []stri
 								"nfs_path",
 								"csi_driver",
 								"csi_volume_handle",
+								"local_path",
+								"local_fs",
+								"host_path",
+								"host_path_type",
 							},
 							LabelValues: []string{
 								p.Spec.StorageClassName,
@@ -240,6 +264,10 @@ func persistentVolumeMetricFamilies(allowAnnotationsList, allowLabelsList []stri
 								nfsPath,
 								csiDriver,
 								csiVolumeHandle,
+								localPath,
+								localFS,
+								hostPath,
+								hostPathType,
 							},
 							Value: 1,
 						},

diff --git a/internal/store/persistentvolume_test.go b/internal/store/persistentvolume_test.go
@@ -23,6 +23,7 @@ import (
 	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/utils/pointer"
 
 	generator "k8s.io/kube-state-metrics/v2/pkg/metric_generator"
 )
@@ -171,7 +172,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -190,7 +191,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -213,7 +214,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="name",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="name",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -236,7 +237,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="aws://eu-west-1c/vol-012d34d567890123b",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="aws://eu-west-1c/vol-012d34d567890123b",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -259,7 +260,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="azure_disk_1",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="azure_disk_1",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -283,7 +284,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="123",fc_target_wwns="0123456789abcdef,abcdef0123456789",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="123",fc_target_wwns="0123456789abcdef,abcdef0123456789",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -306,7 +307,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="0123456789abcdef,abcdef0123456789",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="0123456789abcdef,abcdef0123456789",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -331,7 +332,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="iqn.my.test.server.target00",iscsi_lun="123",iscsi_target_portal="1.2.3.4:3260",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="iqn.my.test.server.target00",iscsi_lun="123",iscsi_target_portal="1.2.3.4:3260",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -357,7 +358,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="iqn.my.test.initiator:112233",iscsi_iqn="iqn.my.test.server.target00",iscsi_lun="123",iscsi_target_portal="1.2.3.4:3260",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="iqn.my.test.initiator:112233",iscsi_iqn="iqn.my.test.server.target00",iscsi_lun="123",iscsi_target_portal="1.2.3.4:3260",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -381,7 +382,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="/myPath",nfs_server="1.2.3.4",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="/myPath",nfs_server="1.2.3.4",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -405,7 +406,101 @@ func TestPersistentVolumeStore(t *testing.T) {
 			Want: `
 					# HELP kube_persistentvolume_info Information about persistentvolume.
 					# TYPE kube_persistentvolume_info gauge
-					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",nfs_path="",nfs_server="",csi_driver="test-driver",csi_volume_handle="test-volume-handle",persistentvolume="test-pv-available",storageclass=""} 1
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="test-driver",csi_volume_handle="test-volume-handle",persistentvolume="test-pv-available",storageclass=""} 1
+				`,
+			MetricNames: []string{"kube_persistentvolume_info"},
+		},
+		{
+			Obj: &v1.PersistentVolume{
+				Spec: v1.PersistentVolumeSpec{
+					PersistentVolumeSource: v1.PersistentVolumeSource{
+						Local: &v1.LocalVolumeSource{
+							FSType: pointer.String("ext4"),
+							Path:   "/mnt/data",
+						},
+					},
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "test-pv-available",
+				},
+				Status: v1.PersistentVolumeStatus{
+					Phase: v1.VolumeAvailable,
+				},
+			},
+			Want: `
+					# HELP kube_persistentvolume_info Information about persistentvolume.
+					# TYPE kube_persistentvolume_info gauge
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="/mnt/data",local_fs="ext4",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+				`,
+			MetricNames: []string{"kube_persistentvolume_info"},
+		},
+		{
+			Obj: &v1.PersistentVolume{
+				Spec: v1.PersistentVolumeSpec{
+					PersistentVolumeSource: v1.PersistentVolumeSource{
+						Local: &v1.LocalVolumeSource{
+							Path: "/mnt/data",
+						},
+					},
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "test-pv-available",
+				},
+				Status: v1.PersistentVolumeStatus{
+					Phase: v1.VolumeAvailable,
+				},
+			},
+			Want: `
+					# HELP kube_persistentvolume_info Information about persistentvolume.
+					# TYPE kube_persistentvolume_info gauge
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="/mnt/data",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+				`,
+			MetricNames: []string{"kube_persistentvolume_info"},
+		},
+		{
+			Obj: &v1.PersistentVolume{
+				Spec: v1.PersistentVolumeSpec{
+					PersistentVolumeSource: v1.PersistentVolumeSource{
+						HostPath: &v1.HostPathVolumeSource{
+							Path: "/mnt/data",
+							Type: hostPathTypePointer(v1.HostPathDirectory),
+						},
+					},
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "test-pv-available",
+				},
+				Status: v1.PersistentVolumeStatus{
+					Phase: v1.VolumeAvailable,
+				},
+			},
+			Want: `
+					# HELP kube_persistentvolume_info Information about persistentvolume.
+					# TYPE kube_persistentvolume_info gauge
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="/mnt/data",host_path_type="Directory",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
+				`,
+			MetricNames: []string{"kube_persistentvolume_info"},
+		},
+		{
+			Obj: &v1.PersistentVolume{
+				Spec: v1.PersistentVolumeSpec{
+					PersistentVolumeSource: v1.PersistentVolumeSource{
+						HostPath: &v1.HostPathVolumeSource{
+							Path: "/mnt/data",
+						},
+					},
+				},
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "test-pv-available",
+				},
+				Status: v1.PersistentVolumeStatus{
+					Phase: v1.VolumeAvailable,
+				},
+			},
+			Want: `
+					# HELP kube_persistentvolume_info Information about persistentvolume.
+					# TYPE kube_persistentvolume_info gauge
+					kube_persistentvolume_info{azure_disk_name="",ebs_volume_id="",fc_lun="",fc_target_wwns="",fc_wwids="",gce_persistent_disk_name="",host_path="/mnt/data",host_path_type="",iscsi_initiator_name="",iscsi_iqn="",iscsi_lun="",iscsi_target_portal="",local_path="",local_fs="",nfs_path="",nfs_server="",csi_driver="",csi_volume_handle="",persistentvolume="test-pv-available",storageclass=""} 1
 				`,
 			MetricNames: []string{"kube_persistentvolume_info"},
 		},
@@ -597,3 +692,7 @@ func TestPersistentVolumeStore(t *testing.T) {
 		}
 	}
 }
+
+func hostPathTypePointer(p v1.HostPathType) *v1.HostPathType {
+	return &p
+}