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commit d8bb5ce6473af1c47500e18bb2224974a92f7e0e
parent 70335188ba8e10bac8c74bda7a17c8c0c2bae267
Author: Chris Bracken <>
Date:   Wed,  8 Sep 2021 14:56:54 -0700

arch: Add section on NFS mapping

Diffstat: | 34++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+), 0 deletions(-)

diff --git a/ b/ @@ -643,6 +643,40 @@ Install isync (also known as mbsync): pacman -S isync +### NFS support + +By default, NFS assumes identical user and group IDs on the client and server. +NFSv4 can be configured to use `idmapd` to map user IDs between client and +server, but this requires a little bit of legwork up front on the server and all +clients. + +On both the client and server, edit `/etc/idmapd.conf` ensure the domain line is +set consistently across both: +``` +Domain = +``` + +With the default security mechanism, idmapd support is disabled. You can verify +this by running: +``` +cat /sys/module/nfs/parameters/nfs4_disable_idmapping +cat /sys/module/nfsd/parameters/nfs4_disable_idmapping +``` + +To re-enable ID mapping, you can manually `echo N` into each of those files as +root to temporarily re-enable it until next boot. To make these changes +permanent across re-boots, edit `/etc/modprobe.d/nfs.conf` to contain: +``` +options nfs nfs4_disable_idmapping=0 +options nfsd nfs4_disable_idmapping=0 +``` + +Edit `/etc/fstab` to contain the new mounts: +``` +# Filesystem Mountpoint Type Options Dump Pass +servername:/path/to/directory /path/to/mountpoint nfs rw,nfsvers=4,_netdev,noauto 0 0 +``` + ### HP printer support Next, we'll configure [CUPS][cups_guide] printer support for HP printers,