Error mounting NFS shares
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Error mounting NFS shares

Every once in a while, my Plex server restarts and fail to mount the NFS share again.

Error mounting /mnt/nfs-media: mount.nfs: requested NFS version or
transport protocol is not supported


I’m certain that the NFS share is shared and available (since it was before the reboot).

How do I figure out what went wrong?

Start by ssh into the Plex VM and ask it what shares are available on the NAS.

showmount -e my-nas-address.home


Well then, let’s ssh into the NAS and take a look at the nfs-server service and…

$ systemctl status nfs-server.service
* nfs-server.service - NFS server and services
   Loaded: loaded (/lib/systemd/system/nfs-server.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sun 2021-04-18 11:06:10 CEST; 6min ago
  Process: 804 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=1/FAILURE)


Doesn’t seem to be running. Even though I was super certain that it was.

$ sudo systemctl start nfs-server.service

Then back into the Plex VM and there all the mounts are.

I guess the moral of this story is - never assume stuff, always double-check it.