[ceph-users] NFS version 4.0

Hi. We are trying to set up an NFS server using ceph which needs to be accessed by an IBM System i. As far as I can tell the IBM System i only supports nfs v. 4. Looking at the nfs-ganesha deployments it seems that these only support 4.1 or 4.2. I have tried editing the configuration file to support 4.0 and it seems to work. Is there a reason than it currently only support 4.1 and 4.2? I can of course edit the configuration file, but I would have to do that after any deployment or upgrade of the nfs servers. Regards Jens Hyllegaard