@nprofile1q... Not sure about reliability, I've used it a few times with diod.

My post is more a testament to the sheer clusterfuck that is NFS' cache management with nfs-ganesha (which is supposed to be higher reliability than the kernel's, that's sort of its entire branding nonsense) and apparently cross-version incompatibility bullshit (upgrading mostly Debian-based homelab I saw some "interesting" behavior).