On Thu, Aug 09, 2018 at 11:07:32AM -0700, mrsvd1v4rgo1@xxxxxxxxxxx wrote: > I'm trying to get a NFS4 client & server id mapping working right. > > My client mounts to a couple of NFS4 servers. > > I want to get it setup so that for just ONE of them, files added to or > modified on the server BY my local client, logged in EITHER as my user > or root, get written with a specific user/group == "nobody:users" You should be able to do that by just adding "all_squash" to the export options in /etc/exports for that one client. > I'm pretty sure that all the magic is done with idmapd config. This is a common source of confusion. NFSv4 idmapping only deals with names and IDs that are sent in NFSv4 protocol messages--when setting or getting file owners and groups, or ACLs. It's the underlying RPC protocol that tells the server who is performing a given RPC. That always uses numeric IDs or krb5 principals, and isn't affected by anything in idmapd.conf. --b.