Re: zfs sharenfs woes

On Tue, Jul 22, 2025 at 7:06 AM void <void@f-m.fm> wrote:
>
> On Tue, Jul 22, 2025 at 06:16:36AM -0700, Rick Macklem wrote:
> >On Tue, Jul 22, 2025 at 6:10 AM void <void@f-m.fm> wrote:
> >>
> >> I have a problem getting sharenfs working. showmount -e displays an empty list.
> >>
> >> On the server (15-current-n278914) 192.168.1.102
> >>
> >> /etc/rc.conf :
> >> # NFS
> >> rpcbind_enable="YES"
> >> nfs_server_enable="YES"
> >> mountd_enable="YES"
> >>
> >> # zfs get sharenfs data/testnfs
> >>
> >> data/testnfs  sharenfs  maproot=root -alldirs -network 192.168.1.100/32 local
> >>
> >> in /etc/zfs/exports :
> >>
> >> /data/testnfs   -maproot=root -alldirs -network 192.168.1.100/32
>
> >I would have expressed exporting to a single client by just specifying
> >"192.168.1.100" instead of "-network 192.168.1.100/32", but I'm not
> >sure if what you did is a problem?
>
> I'm not sure either. If I change it to 192.168.1.100 is it still prefixed
> by "-network" ?
No, but you seemed to try it and it didn't help.
If it worked before, it should still work.

I cannot see any reason why it would not work?

>
> It did work before - all this is subsequent to upgrading to main-stabweek-2025-Jul
> so at this stage I'm unsure if it's something in the upgrade that's a problem or
> something has changed that I've not accounted for.
>
> >Did you look in /var/log/messages to see if mountd reports any error?
> >(Such as not liking 192.168.1.100/32 above.)
>
> mountd[97329]: mount request denied from 192.168.1.100 for /data/testnfs
Expected if it is not exported.

However, mountd should throw out a message when an exports line fails.
Try doing "service mountd reload" and then see if that has generated any
message in /var/log/messages.

rick

>
> On the client,
>
> % doas mount -t nfs 192.168.1.102:/data/testnfs /mnt
> [tcp] 192.168.1.102:/data/testnfs: Permission denied
>
> % doas showmount -e 192.168.1.102
> Exports list on 192.168.1.102:
>
> (empty)
>
> If I set, on the server
>
> % doas zfs set sharenfs="maproot=root -alldirs 192.168.1.100" data/testnfs
>
> then, to make sure
>
> % cat /etc/zfs/exports | ug testnfs
> /data/testnfs -maproot=root -alldirs 192.168.1.100
>
> then, stop everything nfsd
>
> # service mountd stop
> Stopping mountd.
> Waiting for PIDS: 97329.
>
> # service rpcbind stop
> Stopping rpcbind.
> Waiting for PIDS: 85322.
>
> # service nfsd stop
> Stopping nfsd.
> Waiting for PIDS: 34878 35066.
> #
>
> in /var/log/messages on the server, I see
>
> nfsd[34878]: rpcb_unset failed
>
> Start all of nfsd it starts everything else
>
> # service nfsd start
>   NFS on reserved port only=YES
>   NFSv4 is disabled
>   Starting rpcbind.
>   Starting mountd.
>   Starting nfsd.
> #
>
> On the client:
>
> % doas showmount -e 192.168.1.102
> Exports list on 192.168.1.102:
>
> (empty)
>
> I ran 'zfs share -a' and also 'zfs share data/testnfs'. I see
> mountd[1148]: mount request denied from 192.168.1.100 for /data/testnfs in
> '/var/log/messages' on the server
>
> --
>
>