Description of problem: Issue in creating gp3 type-based volumes. The same does work with gp2. The gp3 type volume should work well on 4.9.z CSI driver provisioned. Will add the events in the Bug notes.
This looks like OCP / the CSI driver does not have permissions to use the referenced KMS key. In that case, AWS cloud API CreateDisk call returns a valid volume ID and only after that it realizes that it does not have access to the encryption key and silently deletes the volume. We're fixing it in 4.11 here: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=2049872 As a workaround in 4.9, the customer can grant required permissions to the AWS EBS CSI Driver IAM role manually, as shown in https://github.com/openshift/cluster-storage-operator/pull/263/files. *** This bug has been marked as a duplicate of bug 2049872 ***