Where are NFS v4 logs under systemd?

My error is: mount.nfs4: access denied by server while mounting fileserver:/export/path/one My question is: >where would the detailed log information be on the server (under systemd)? More information: == I asked a similar question from the Ubuntu client perspective on AskUbuntu. My focus in this question is on the Arch Linux server. In particular, I am looking for logs on the server that will help me understand the problem. **Here's the background:** Our small LAN is running an Arch Linux NFS v4 file server. We have several clients running Ubuntu 15.10 and 16.04. We have one client running Ubuntu 14.04. The 14.04 client will not connect to the file server. The others all connect fine. The settings are the same on all clients. And all clients are listed in /etc/exports on the server. I need to find more detailed error information on the Arch linux server. However, journalctl does not show anything related to nfs and it does not contain any entries that are related to the nfs access denied errors. The 14.04 client can ping the fileserver as well as log in via SSH. The user name / ID as well as group match. (I'm using the same user account / uid on both client and server. It is uid 1000.) Even more info: ==

$ sudo mount -a (on client)
mount.nfs4: access denied by server while mounting fileserver:/export/path/one
mount.nfs4: access denied by server while mounting fileserver:/export/path/two

The client can ping the fileserver (and vice versa):

$ ping fileserver
PING fileserver (192.168.1.1) 56(84) bytes of data.
64 bytes from fileserver (192.168.1.1): icmp_seq=1 ttl=64 time=0.310 ms

The client successfully logs into the LAN-based fileserver:

$ ssh fileserver
Last login: Tue Aug 16 14:38:26 2016 from 192.168.1.2
[me@fileserver ~]$

The fileserver's mount export and rpcinfo are exposed to the client:

$ showmount -e fileserver    # on client
Export list for fileserver:
/export/path/one/ 192.168.1.2
/export/path/two/ 192.168.1.2,192.168.1.3

$ rpcinfo -p fileserver (on client)
    program vers proto   port  service
    100000    4   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    2   tcp    111  portmapper
    100000    4   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    2   udp    111  portmapper
    100024    1   udp  58344  status
    100024    1   tcp  58561  status
    100005    1   udp  20048  mountd
    100005    1   tcp  20048  mountd
    100005    2   udp  20048  mountd
    100005    2   tcp  20048  mountd
    100005    3   udp  20048  mountd
    100005    3   tcp  20048  mountd
    100003    4   tcp   2049  nfs
    100003    4   udp   2049  nfs

This is the error when mounting the export directly:

$ sudo mount -vvv -t nfs4 fileserver:/export/path/one /path/one/

    mount: fstab path: "/etc/fstab"
    mount: mtab path:  "/etc/mtab"
    mount: lock path:  "/etc/mtab~"
    mount: temp path:  "/etc/mtab.tmp"
    mount: UID:        0
    mount: eUID:       0
    mount: spec:  "fileserver:/export/path/one"
    mount: node:  "/path/one/"
    mount: types: "nfs4"
    mount: opts:  "(null)"
    mount: external mount: argv = "/sbin/mount.nfs4"
    mount: external mount: argv[1]  = "fileserver:/export/path/one"
    mount: external mount: argv = "/path/one/"
    mount: external mount: argv = "-v"
    mount: external mount: argv = "-o"
    mount: external mount: argv = "rw"
    mount.nfs4: timeout set for Tue Aug 16 16:10:43 2016
    mount.nfs4: trying text-based options 'addr=192.168.1.1,clientaddr=192.168.1.2'
    mount.nfs4: mount(2): Permission denied
    mount.nfs4: access denied by server while mounting fileserver:/export/path/one