Every time I move a file from one location to another (from eg. shared scratch location (nvme) to a cached location (mec. disk)) within shared locations in NFS I constantly get stale file handles and the client drops out. This can be critical as some VM's uses the same mounted shares as I have in general bad luck with write permissions with 9p over VM's. But it's quite annoying for my regular workstation as well as I suddenly looses access due to stale handle when a "Mover" has been running.
I dunno if this is only related to cache shares (but it might look like), or if it happens when things have changed on one of the disks in general. The problem did not happen under 6.7.x or earlier.
I have tried fuse_remember values of standard 330 (which I used with success in earlier versions), 900 to just try a higher number, and also -1 as I have plenty of memory - though I'm not sure if I want that kind of cache to last that long. Honestly can't find any proper answer for what this actually does anyway.
It makes Unraid almost entirely unusable for me, and I can't figure out why this suddenly happens. I hope it's something wrong on my end, but I haven't really changed anything the last 4-5 years (even before my Unraid time).