nfs on 17.04

[Tom H]

On Thu, Jun 29, 2017 at 7:20 AM, R Kimber
<richardkimber at politicsresources.net> wrote:
> On Thu, 29 Jun 2017 04:31:49 -0400 Tom H wrote:
>>
>> Can you mount the nfs share on the RPi if you disable the firewall on
>> the server?
>
> Aaarrgh! It's the firewall. But the explanation is beyond me.
>
> I disabled the server firewall and the client mounted the drives correctly.
> I re-enabled the firewall (without making any changes to it) and the client
> continued to re-mount the drives correctly.
>
> So the problem has been solved for the time being without my understanding
> the solution, which is not the most satisfactory outcome.
>
> I'd like to thank you very much for your help and patience, without which I
> might have given up!

You're welcome. But I doubt that you're at the end of your troubles
because if it works after re-enabling the firewall, it must be because
there's some caching going on somewhere.

What happens after you reboot the RPi?

If it fails, ...

If it fails, does it work with "mount -t nfs -o nfsvers=4 ..."? It
should work because nfsv4 doesn't need the other ports but it'd be
surprising because the RPi should be defaulting to nfsv4.