We met the minimum supported PVC size issue in GCP (4Gi, or 6Gi for expandable volume) and ARO (1Gi, but 50Gi provisioned). In ARO, for volumes larger than 50Gi pvcs, we also found we cannot use the current storage api as it needs to be exactly in Gis (1024^3), so filesystem overhead needs to take that into consideration.

The new field will be empty by default, and set only for specific provisioners.

The issue depends on CNV-51171.