Well just a quick note and possible guide I had uncounted after upgrading my opensuse installation (clean install) to Leap 15.2 my autofs NFS mount from the QNAS would only let me write and not read from the folders ? I had spent several days checking and changing things around without success. I managed to get it reading by disabling NFS v2-v3 on the QNAS but this was not convenient as both my Kodi and Runeaudio installs on separate media players needed NFSv3.
After some extensive google research I found a simple answer and it works yay.
I added the auto.master
+auto.master
/home/####/NAS /etc/auto.nfs4 --timeout=180
And changed auto.nfs to auto.nfs4
then edited the auto.nfs4 and changed
QNAS -fstype=nfs4 192.168.##.##:/
TO
QNAS -fstype=nfs 192.168.##.##:/
Oviously the ## is just to hide real IP
Andrew