I'm hoping to serve an NFS mount from my High Sierra (10.13.4) server to a linux client. The linux client can mount using NFSv3 protocol, but I use ACLs on the served files and directories, so I think we need NFSv4.
I'd like to use version 4 of the protocol. Is this possible? I see the nfsd(8) man page does not mention version 4. I found a manpage for FreeBSD exports(5) that uses the flag V4: at the start of a line in /etc/exports to declare the protocl version.
I tried this with my nfsd and it failed to parse correctly, using "nfsd checkexports".
If I check rpc:
$ sudo rpcinfo -p program vers proto port ... 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100003 2 tcp 2049 nfs 100003 3 tcp 2049 nfs
This makes me think my nfsd supports version 2 and 3 of the protocol. perhaps I can upgrade this server?