In GKE version 1.30 and later, there is a workaround in the PDCSI driver for privileged workloads that access container namespaces with hostpath

## Fix In GKE version 1.30 and later, there is a [workaround in the PDCSI driver](https://github.com/kubernetes-sigs/gcp-compute-persistent-disk-csi-driver/pull/1658) for privileged workloads that access container namespaces with hostpath. The workaround delays NodeUnstage until attached filesystems are no longer in use. Under certain conditions, the privileged hostpath workloads may cause a container's mount namespace to be retained longer than the container's lifecycle. The workaround addresses an issue where the driver could proceed with detaching a GCE persistent disk even if the block device filesystem is still in use. With this fix, the PDCSI driver will validate that an attached block device is no longer in use prior to unmounting it from a GKE node. ## Feature Custom compute classes are a new set of capabilities in GKE that provide an API for fine-grained control over fallback compute priorities, autoscaling configuration, obtainability and node consolidation. Custom compute classes offer enhanced flexibility and control over your GKE compute infrastructure so that you can ensure optimal resource allocation for your workloads. You can use custom compute classes in GKE version 1.30.3-gke.1451000 and later. To learn more, see [About custom compute classes](https://cloud.google.com/kubernetes-engine/docs/concepts/about-custom-compute-classes).