Unable to configure backupPVC via Helm chart values.yaml for Velero PVC backup feature

[ehemmerlin]

What steps did you take and what happened:
I’m trying to configure backupPVC as described in the https://velero.io/docs/main/data-movement-backup-pvc-configuration/, using the following structure:

backupPVC:
  storage-class:
    storageClass: backupPVC-storage-class
    readOnly: true

However, I cannot find any corresponding entry in the Helm chart’s values.yaml file to apply this configuration. I expected to be able to define this directly via Helm values.

What did you expect to happen:
I expected the Helm chart to support backupPVC configuration directly through values.yaml, allowing me to define storage class-specific backup behavior during deployment.

The output of the following commands will help us better understand what's going on:
N/A – this is a configuration issue rather than a runtime error.

Anything else you would like to add:
If this is not currently supported, could you advise on the recommended way to apply this configuration via Helm? Should I use extraObjects, patch the deployment manually, or extend the chart?

Environment:

• helm version (use helm version): v3.18.5
• helm chart version and app version (use helm list -n <YOUR NAMESPACE>): 10.1.1 and 1.16.2

[ehemmerlin]

I finally found a solution by adding node-agent extra arguments and defining a ConfigMap like this:

nodeAgent:
  extraArgs: ["--node-agent-configmap=velero-node-agent-cfg"]
...
configMaps:
  node-agent-cfg:
    data:
      node-agent-config.json: |
        {
          "backupPVC": {
            "longhorn": {
              "storageClass": "backup"
            }
          }
        }