nfs-server startup problem after boot

[armdran]

I did install an apt install nfs-kernel-server nfs-common on my bananaPi M1.

I did export some dirs and successfully mounted them from my clients.

After a reboot the mounts did not work.

Then I manually invoked  exportfs -a and the client were able to mount.

What is the correct way to get the nfs server started after a reboot?

 

 

Edited March 16, 2023 by armdran
rework

[armdran]

I have found that the systemd nfs-server unit fails because it cannot resolve hostnames when the service starts up after reboot.

I tried to add the following to the Unit, but it still fails.
 

Requires=network-online.target

After=network-online.target

It seems that others are also struggling with it and there is no good solution but only workarounds.

 

[bedna]

I am running a nfs share on my rpi4 and got curious (I use ip addresses rather than host-names, so that could be an extra layer you have to make sure is loaded before it is trying to connect), because I just created the /etc/exports, exportfs -ra, reloaded the systemd daemon and enabled nfs-server.service.

So I checked the service file itself.

This is on raspberry pi os, not armbian.
Mine contains way more dependencies than just network-online.target, maybe you can use this to figure it out:

 

$ cat /lib/systemd/system/nfs-server.service

[Unit]
Description=NFS server and services
DefaultDependencies=no
Requires=network.target proc-fs-nfsd.mount
Requires=nfs-mountd.service
Wants=rpcbind.socket
Wants=nfs-idmapd.service

After=local-fs.target
After=network.target proc-fs-nfsd.mount rpcbind.socket nfs-mountd.service
After=nfs-idmapd.service rpc-statd.service
Before=rpc-statd-notify.service

# GSS services dependencies and ordering
Wants=auth-rpcgss-module.service
After=rpc-gssd.service gssproxy.service rpc-svcgssd.service

# start/stop server before/after client
Before=remote-fs-pre.target

Wants=nfs-config.service
After=nfs-config.service

[Service]
EnvironmentFile=-/run/sysconfig/nfs-utils

Type=oneshot
RemainAfterExit=yes
ExecStartPre=/usr/sbin/exportfs -r
ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS
ExecStop=/usr/sbin/rpc.nfsd 0
ExecStopPost=/usr/sbin/exportfs -au
ExecStopPost=/usr/sbin/exportfs -f

ExecReload=/usr/sbin/exportfs -r

[Install]
WantedBy=multi-user.target