Unraid NFS Shares - How does Mover really impact them?

Hi all,

Long time Unraid user, but pretty new to NFS shares.

As I have progressed in my Homelab endeavours, I have learned about them and it seems they are preferable for mounting my large storage pools in my VMs (media access etc). All was well, but fairly regularly these shares would break with the dreaded 'stale file handle' errors. After searching for a few days, I havent really been able to find much concensus beyong this being 'fixed' after Unraid 6.10 and moving to NFSv4, or that its a fault of the Mover breaking things when moving off the SSD cache onto my spinning rust.

What is the reality here? Is there a way to have the Mover actually work normally and have NFS be stable? For clarities sake, these are NFS mounts on VMs on a separate machine to Unraid, mounting NFS shares exported by Unraid. I was using the latest Unraid version (7.1.4 I believe at the time of writing).

Is there something I am missing here? The logs didn't indicate anything wrong on the Unraid side, but I am happy to gather whatever logs I can to get to the bottom of it.

FWIW, testing with TrueNAS Scale, NFS is entirely stable, but I understand the RAIDZ1 is not using a cache like Unraid.

Thanks in advance for any advice anyone can provide. I really like Unraid and would prefer to continue using it over TrueNAS for its flexibility and energy efficiency.

Kris