I have couple of machine mounted with nfsv4.1 from a FAS3250 on cluster mode.
The machines are hosting VMs which are running on the nfs mount.
It was working fine until some of the machine started to log
kernel: [703692.856028] Got error -10008 from the server on DESTROY_SESSION. Session has been destroyed regardless..
From the machine, the mounted nfs directory becomes slow (e.g cd in to directory or running ls -l command)
The VMs running in that host reports slow IO as well.
Just wandering if anyone has encountered such issue before with nfsv4.1