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Issue description

Issues Identified:

🔹 1. Incorrect StorageClass in Step 4 Table

The table in step 4 of the lab asks the user to use the following StorageClass:

ocs-external-storagecluster-external-ceph-rbd-virtualization

Using the incorrect StorageClass causes the PVC to remain in a Pending state and not bind to a PV, yet the grading script still marks the lab as passed.

2. Grading Script Does Not Validate PVC Binding

3. Filesystem Mode vs StorageClass Support

The table also specifies the VolumeMode as Filesystem, but the correct StorageClass (ocs-external-storagecluster-ceph-rbd-virtualization) supports only block volumes.
This can lead to confusion or validation errors when using the OpenShift web console.

Improve the grading script logic to:

• Check for PVC status: Bound

• Ensure disk is mounted and usable within the VM

Steps to reproduce:

Workaround:

Expected result: