We've had some users attempting to use EFS CSI on a destination cluster, which seems to be tech preview in OCP4 that's blocking our ability for migrations. It's using root_squash, when, we actually need no_root_squash to allow for our chown manipulation of the file permissions so that workloads are capable of coming up. Relevant GH issue about the driver:

https://github.com/kubernetes-sigs/aws-efs-csi-driver/issues/300

Let's write up a blog post for engineer.konveyor.io that more generally introduces our needs, and use EFS CSI as an illustration of where our needs are broken. We should also suggest what changes are necessary for this to function.