Worked on the scylladb/scylla-cluster-tests repository to enhance the robustness of GCP disk cleanup processes. Addressed a critical issue by expanding the disk cleanup filter to include disks associated with Persistent Volume Claims, specifically targeting those with 'pvc-' prefixes in addition to the existing 'gke-.*-pvc-' pattern. This change, implemented using Python scripting and leveraging cloud infrastructure expertise, prevents orphaned disks from accumulating in Google Cloud Platform environments. The update reduced unnecessary cloud costs and maintenance overhead by ensuring more comprehensive resource cleanup. The solution was validated within the repository’s workflow, improving reliability for ongoing disk management operations.