Creating a custom block pool using command-line interface

Before you begin

You have administrative access to Red Hat OpenShift Web Console.
Fusion Data Foundation client operator is installed and Fusion Data Foundation storage client is created.

About this task

You can create custom block pools to change the backend storage device used based on the requirement.

Procedure

In the provider storage cluster CR, edit the storageDeviceSets to add the device of your choice.

For example:

- config: {}
      name: test-2
      deviceClass: fast
      dataPVCTemplate:
        metadata: {}
        spec:
          storageClassName: local-block
          accessModes:
            - ReadWriteOnce
          resources:
            requests:
              storage: 5Gi
          volumeMode: Block
      count: 3
      placement: {}
      replica: 1

Create a new block pool.

For example:

apiVersion: ceph.rook.io/v1
kind: CephBlockPool
metadata:
  name: fast-cbp
  namespace: openshift-storage
spec:
  deviceClass: fast
  application: ""
  enableRBDStats: true
  erasureCoded:
    codingChunks: 0
    dataChunks: 0
  failureDomain: host
  mirroring: {}
  quotas: {}
  replicated:
    replicasPerFailureDomain: 1
    size: 3
    targetSizeRatio: 0.49
  statusCheck:
    mirror: {}

In the

, edit the

In the StorageClaim, edit the storageProfile to use the custom block pool with a new device class that is created in the provider cluster.
For example:
```
piversion: ocs.openshift.io/v1alpha1
Kind: StorageClaim
Metadata:
	Name: <storage_claim_name>
Spec:
  storageClient: ocs-storagecluster
  storageProfile: <block_pool_name>
  type : block
```
This creates a new storage class with the new device class and when the applications use these storage classes, the block pool is used to store the data on the newly configured device.
To verify that the new storage classes are created, perform the following steps:
1. Click Storage → StorageClasses.
2. Verify that a new storage class with the same name as the storage claim is created.