Unity XT

Upgrade Unity XT CSI driver

You can upgrade the CSI Driver for Dell Unity XT using Helm or Dell CSM Operator.

Note:

  1. User has to re-create existing custom-storage classes (if any) according to the latest format.
  2. User has to create Volumesnapshotclass after upgrade for taking Snapshots.
  3. Secret.yaml files can be updated according to Multiarray normalization parameters only after upgrading the driver.

Using Helm

Note: While upgrading the driver via helm, controllerCount variable in myvalues.yaml can be at most one less than the number of worker nodes.

Preparing myvalues.yaml is the same as explained in the install section.

To upgrade the driver from csi-unity v2.8.0 to csi-unity v2.9.1

  1. Get the latest csi-unity v2.9.1 code from Github using git clone -b v2.9.1 https://github.com/dell/csi-unity.git.
  2. Copy the helm/csi-unity/values.yaml to the new location csi-unity/dell-csi-helm-installer and rename it to myvalues.yaml. Customize settings for installation by editing myvalues.yaml as needed.
  3. Navigate to csi-unity/dell-csi-hem-installer folder and execute this command: 
    
./csi-install.sh --namespace unity --values ./myvalues.yaml --helm-charts-version <version> --upgrade

NOTE:

  • The parameter --helm-charts-version is optional and if you do not specify the flag, by default the csi-install.sh script will clone the version of the helm chart that is specified in the driver’s csi-install.sh file. If you wish to install the driver using a different version of the helm chart, you need to include this flag. Also, remember to delete the helm-charts repository present in the csi-unity directory if it was cloned before.

Upgrade using Dell CSM Operator:

Note: Upgrading the Operator does not upgrade the CSI Driver.

  1. Upgrade the Dell CSM Operator by following here
  2. Once the operator is upgraded, to upgrade the driver, refer here