try setting AWS-recommended mount options for EBS volumes

roles/nfs_server/tasks/main.yml

@@ -34,6 +34,7 @@
     path: "{{ atl_shared_mountpoint }}"
     src: "LABEL={{ atl_nfs_fs_label }}"
     fstype: "{{ atl_nfs_fs_type }}"
+    opts: defaults,nofail 0 2
     state: mounted