[gentoo-user] nfs mounting

[Peter Humphrey <peter@prh.myzen.co.uk>]

Greetings,

It's me again with another tyro problem.

I'm trying to set up my big Ryzen M9 workstation as compute host for my 
desktop PC, which is an i5 NUCI. I had the same arrangement working well with 
the i5's predecessor, but I can't make it work this time.

The idea is to NFS-export the i5's portage and packages directories to the M9, 
which mounts it in a chroot partition to work on it. The M9 is on the wored 
LAN, the i5 uses WiFi to connect through the ADSL modem-router. The M9 has a 
separate partition for the chroot, but the i5 portage tree and packages 
directory both live under the /var partition.

I've used the same script and file-system layout on the M9 as before, merely 
adjusting the IP address.

# mount /mnt/nuci
# mount -t nfs 192.168.178.40:/mnt/nfs/portage /mnt/nuci/var/db/repos/gentoo
mount.nfs: mounting 192.168.178.40:/mnt/nfs/portage failed, reason given by 
server: No such file or directory

That reply comes about 15s after the mount command, so DNS is working and 
traffic is flowing between the machines.

This is /etc/exports on the i5:

/mnt/nfs \
   192.168.178.7(rw,sync,no_subtree_check,anonuid=250,anongid=250,crossmnt,fsid=0)
/mnt/nfs/portage \
   192.168.178.7(rw,sync,insecure,nohide,no_subtree_check,all_squash,anonuid=250,anongid=250)
/mnt/nfs/portage.packages \
   192.168.178.7(rw,sync,insecure,nohide,no_subtree_check,all_squash,anonuid=250,anongid=250)

$ ls -la /mnt/nfs/portage | head
total 1.1M
drwxr-xr-x  179 root    portage 4.0K Sep 20 10:27 .
drwxr-xr-x    4 root    root    4.0K Oct  8 14:21 ..
drwxr-xr-x  451 portage portage  12K Sep  5 15:51 acct-group
drwxr-xr-x  421 portage portage  12K Sep  5 15:51 acct-user
drwxr-xr-x   27 portage portage 4.0K Sep  3 14:36 app-accessibility
drwxr-xr-x  194 portage portage 4.0K Oct  1 12:13 app-admin
drwxr-xr-x   12 portage portage 4.0K Sep  3 14:36 app-alternatives
drwxr-xr-x    6 portage portage 4.0K Sep  3 14:36 app-antivirus
drwxr-xr-x  111 portage portage 4.0K Sep  3 14:36 app-arch

Everything under /mnt/nfs/portage has owner portage:portage. (I found that 
necessary on the earlier setup, so it's the same here.)

I've checked the firewall settings and logs; no problems found. Both kernels 
have NFSv3 and v4, but not 4.1 or 4.2. What else can I check?

-- 
Regards,
Peter.