Creating a PVC Change

Mon, 01 Jan 0001 00:00:00 +0000

Prerequisites

The storage backends associated with the PVC to be changed are HyperMetro storage backends. If they are not HyperMetro storage backends, configure them by following the instructions in Updating a Storage Backend .

PVC Change File Description

The sample template of the PVC change file is /examples/volumemodifyclaim.yaml. The following table lists the configuration items.

Table 1 Parameter description

Parameter	Description	Mandatory	Default Value	Remarks
apiVersion	API group, which is of the string type. Querying a PVC Change Mon, 01 Jan 0001 00:00:00 +0000 This section describes how to use Kubectl to query the PVC change status. Currently, Huawei CSI provides the following APIs through CRD. Querying a VolumeModifyClaim To query a VolumeModifyClaim using kubectl, perform the following steps. Use a remote access tool, such as PuTTY, to log in to any master node in the Kubernetes cluster through the management IP address. Run the following command to query a PVC change. In the command, vmc-name indicates the name of the VolumeModifyClaim resource. Deleting a PVC Change Mon, 01 Jan 0001 00:00:00 +0000 If STATUS of a VolumeModifyClaim is Creating, deleting the VolumeModifyClaim resource will delete the created resource on the storage side and then remove the cluster resource. After the deletion, if you continue to use the original StorageClass for PVC management, you need to restore the associated storage backend to a non-HyperMetro storage backend. If STATUS of a VolumeModifyClaim is Pending or Completed, deleting the VolumeModifyClaim resource will only remove the cluster resource and will not delete the created resource on the storage side (that is, there is not interaction with the storage side). VolumeModifyContent resources are managed by VolumeModifyClaim. Do not manually manage VolumeModifyContent resources. If some PVCs among the PVCs to be changed meet the change requirements and the batch change fails, all PVC changes will be removed. As a result, the PVCs that meet the change requirements will not meet the change requirements. If a PVC to be changed has been manually managed on the storage side, the change may fail. Do not manually manage storage volumes when using the change feature. This section describes how to use kubectl to delete a PVC change. The procedure is as follows.

Parameter

Description

Mandatory

Default Value

Remarks

apiVersion

API group, which is of the string type.

Querying a PVC Change

Mon, 01 Jan 0001 00:00:00 +0000

This section describes how to use Kubectl to query the PVC change status. Currently, Huawei CSI provides the following APIs through CRD.

Querying a VolumeModifyClaim

To query a VolumeModifyClaim using kubectl, perform the following steps.

Use a remote access tool, such as PuTTY, to log in to any master node in the Kubernetes cluster through the management IP address.
Run the following command to query a PVC change. In the command, vmc-name indicates the name of the VolumeModifyClaim resource.

Deleting a PVC Change

Mon, 01 Jan 0001 00:00:00 +0000

If STATUS of a VolumeModifyClaim is Creating, deleting the VolumeModifyClaim resource will delete the created resource on the storage side and then remove the cluster resource. After the deletion, if you continue to use the original StorageClass for PVC management, you need to restore the associated storage backend to a non-HyperMetro storage backend.

If STATUS of a VolumeModifyClaim is Pending or Completed, deleting the VolumeModifyClaim resource will only remove the cluster resource and will not delete the created resource on the storage side (that is, there is not interaction with the storage side).

VolumeModifyContent resources are managed by VolumeModifyClaim. Do not manually manage VolumeModifyContent resources.

If some PVCs among the PVCs to be changed meet the change requirements and the batch change fails, all PVC changes will be removed. As a result, the PVCs that meet the change requirements will not meet the change requirements.

If a PVC to be changed has been manually managed on the storage side, the change may fail. Do not manually manage storage volumes when using the change feature.

This section describes how to use kubectl to delete a PVC change. The procedure is as follows.

Configuring PVC Changes on Huawei

Creating a PVC Change

Prerequisites

PVC Change File Description

Querying a PVC Change

Querying a VolumeModifyClaim

Deleting a PVC Change