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Update docs to specify PV deletion protection finalizer support for only dynamically provisioned volumes 

Signed-off-by: Deepak Kinni <dkinni@vmware.com>
This commit is contained in:
Deepak Kinni 2022-04-05 21:28:47 +05:30
parent 2d75bfa812
commit 8c9bf99a66
1 changed files with 20 additions and 12 deletions
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30
content/en/docs/concepts/storage/persistent-volumes.md
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@ -181,26 +181,34 @@ However, the particular path specified in the custom recycler Pod template in th
Finalizers can be added on a PersistentVolume to ensure that PersistentVolumes Finalizers can be added on a PersistentVolume to ensure that PersistentVolumes
having `Delete` reclaim policy are deleted only after the backing storage are deleted. having `Delete` reclaim policy are deleted only after the backing storage are deleted.
The newly introduced finalizers `kubernetes.io/pv-controller` and `external-provisioner.volume.kubernetes.io/finalizer`
are only added to dynamically provisioned volumes.
The finalizer `kubernetes.io/pv-controller` is added to in-tree plugin volumes. The following is an example The finalizer `kubernetes.io/pv-controller` is added to in-tree plugin volumes. The following is an example
```shell ```shell
kubectl describe pv task-pv-volume kubectl describe pv pvc-74a498d6-3929-47e8-8c02-078c1ece4d78
Name: task-pv-volume Name: pvc-74a498d6-3929-47e8-8c02-078c1ece4d78
Labels: type=local Labels: <none>
Annotations: <none> Annotations: kubernetes.io/createdby: vsphere-volume-dynamic-provisioner
Finalizers: [kubernetes.io/pv-protection, kubernetes.io/pv-controller] pv.kubernetes.io/bound-by-controller: yes
StorageClass: standard pv.kubernetes.io/provisioned-by: kubernetes.io/vsphere-volume
Finalizers: [kubernetes.io/pv-protection kubernetes.io/pv-controller]
StorageClass: vcp-sc
Status: Bound Status: Bound
Claim: Claim: default/vcp-pvc-1
Reclaim Policy: Delete Reclaim Policy: Delete
Access Modes: RWO Access Modes: RWO
VolumeMode: Filesystem
Capacity: 1Gi Capacity: 1Gi
Node Affinity: <none>
Message: Message:
Source: Source:
Type: HostPath (bare host directory volume) Type: vSphereVolume (a Persistent Disk resource in vSphere)
Path: /tmp/data VolumePath: [vsanDatastore] d49c4a62-166f-ce12-c464-020077ba5d46/kubernetes-dynamic-pvc-74a498d6-3929-47e8-8c02-078c1ece4d78.vmdk
HostPathType: FSType: ext4
Events: <none> StoragePolicyName: vSAN Default Storage Policy
Events: <none>
``` ```
The finalizer `external-provisioner.volume.kubernetes.io/finalizer` is added for CSI volumes. The finalizer `external-provisioner.volume.kubernetes.io/finalizer` is added for CSI volumes.