Procedure

1. Log in to OpenShift Web Console.
2. Click Storage → Storage Classes.
3. Click Create Storage Class.
4. Enter the storage class Name and Description.
5. Select the required Reclaim Policy and Provisioner.
6. Click Create to create the Storage Class.

Procedure

1. Log in to the OpenShift Web Console.
2. Click on Operators → Installed Operators.
3. Click OpenShift Container Storage Operator.
4. Click Storage Cluster tab.
5. The visible list should have only one item. Click (⋮) on the far right to extend the options menu.
6. Select Add Capacity from the options menu.

7. Select the Storage Class.

   Set the storage class to gp2 on AWS, thin on VMware, ovirt-csi-sc on Red Hat Virtualization or managed_premium on Microsoft Azure if you are using the default storage class generated during deployment. If you have created other storage classes, select whichever is appropriate.

   Important

   Using storage classes other than the default for your provider is a Technology Preview feature.

   Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

   For more information, see Technology Preview Features Support Scope.

   The Raw Capacity field shows the size set during storage class creation. The total amount of storage consumed is three times this amount, because OpenShift Container Storage uses a replica count of 3.

8. Click Add and wait for the cluster state to change to Ready.

1. On the OpenShift web console, click on Operators → Installed Operators.
2. Click OpenShift Container Storage Operator.
3. Click Storage Cluster tab.
4. The visible list should have only one item. Click (⋮) on the far right to extend the options menu.
5. Select Add Capacity from the options menu.
6. Select the Storage Class for which you added disks or the new storage class depending on your requirement. Available Capacity displayed is based on the local disks available in storage class.

7. Click Add.

   You might need to wait a couple of minutes for the storage cluster to reach Ready state.

Procedure

1. Add additional hardware resources with zFCP disks

   1. List all the disks with the following command.

      $ lszdev

      Example output:

      TYPE         ID                                              ON   PERS  NAMES
      zfcp-host    0.0.8204                                        yes  yes
      zfcp-lun     0.0.8204:0x102107630b1b5060:0x4001402900000000  yes  no    sda sg0
      zfcp-lun     0.0.8204:0x500407630c0b50a4:0x3002b03000000000  yes  yes   sdb sg1
      qeth         0.0.bdd0:0.0.bdd1:0.0.bdd2                      yes  no    encbdd0
      generic-ccw  0.0.0009                                        yes  no

      A SCSI disk is represented as a zfcp-lun with the structure <device-id>:<wwpn>:<lun-id> in the ID section. The first disk is used for the operating system. The device id for the new disk can be the same.

   2. Append a new SCSI disk with the following command.

      $ chzdev -e 0.0.8204:0x400506630b1b50a4:0x3001301a00000000

      Note

      The device ID for the new disk must be the same as the disk to be replaced. The new disk is identified with its WWPN and LUN ID.

   3. List all the FCP devices to verify the new disk is configured.

      $ lszdev zfcp-lun
      TYPE         ID                                              ON   PERS  NAMES
      zfcp-lun     0.0.8204:0x102107630b1b5060:0x4001402900000000 yes  no    sda sg0
      zfcp-lun     0.0.8204:0x500507630b1b50a4:0x4001302a00000000  yes  yes   sdb sg1
      zfcp-lun     0.0.8204:0x400506630b1b50a4:0x3001301a00000000  yes  yes   sdc sg2

2. Navigate to the OpenShift Web Console.
3. Click Operators on the left navigation bar.
4. Select Installed Operators.
5. In the window, click OpenShift Container Storage Operator:
6. In the top navigation bar, scroll right and click Storage Cluster tab.
7. Click (⋮) next to the visible list to extend the options menu.

8. Select Add Capacity from the options menu.

   The Raw Capacity field shows the size set during storage class creation. The total amount of storage consumed is three times this amount, because OpenShift Container Storage uses a replica count of 3.

9. Click Add and wait for the cluster state to change to Ready.

Verification steps

1. Navigate to Overview → Block and File tab, then check the Capacity breakdown card.

   Note that the capacity increases based on your selections.

   Note

   The raw capacity does not take replication into account and shows the full capacity.

Procedure

1. To add storage capacity to OpenShift Container Platform nodes with OpenShift Container Storage installed, you need to

   1. Find the available devices that you want to add, that is, a minimum of one device per worker node. You can follow the procedure for finding available storage devices in the respective deployment guide.

      Note

      Make sure you perform this process for all the existing nodes (minimum of 3) for which you want to add storage.

   2. Add the additional disks to the LocalVolume custom resource (CR).

      $ oc edit -n openshift-local-storage localvolume localblock

      Example output:

      spec:
        logLevel: Normal
        managementState: Managed
        nodeSelector:
          nodeSelectorTerms:
            - matchExpressions:
                - key: kubernetes.io/hostname
                  operator: In
                  values:
                    - worker-0
                    - worker-1
                    - worker-2
        storageClassDevices:
          - devicePaths:
              - /dev/sda
              - /dev/sdx    # newly added device
            storageClassName: localblock
            volumeMode: Block

      Make sure to save the changes after editing the CR.

      Example output:

      localvolume.local.storage.openshift.io/localblock edited

      You can see in this CR that new devices have been added.

      • sdx

2. Display the newly created PVs with storageclass name used in localVolume CR.

   $ oc get pv | grep localblock | grep Available

   Example output:

   local-pv-a04ffd8       500Gi      RWO      Delete       Available      localblock       24s
   local-pv-a0ca996b      500Gi      RWO      Delete       Available      localblock       23s
   local-pv-c171754a      500Gi      RWO      Delete       Available      localblock       23s

3. Navigate to the OpenShift Web Console.
4. Click on Operators on the left navigation bar.
5. Select Installed Operators.
6. In the window, click OpenShift Container Storage Operator:
7. In the top navigation bar, scroll right and click Storage Cluster tab.
8. The visible list should have only one item. Click (⋮) on the far right to extend the options menu.

9. Select Add Capacity from the options menu.

   From this dialog box, set the Storage Class name to the name used in the localVolume CR. Available Capacity displayed is based on the local disks available in storage class.

10. Once you are done with your setting, click Add.

    You might need to wait a couple of minutes for the storage cluster to reach Ready state.