Hallo All,
I'm not sure if this was mentioned but I had some problems with NFS,
using Synology, a while back and the solution for me was to use a
subfolder instead of the root of the NFS mount.
My exports:
/volume1/nfs *(rw,sec=sys,anonuid=36,anongid=36)
And I mount data in oVirt as /volume1/nfs/data. Before I re-installed I
used /volume1/nfs/data as an export.
Worth a try?
Regards,
Joop