NFS lease period not implemented

[Peter-JanGootzen]

In NFS the filehandle returned by OPEN is only valid for the lease period (attribute lease_time which is in seconds). Currently no consideration of this is made, thus after the lease period has ended we start erroring. https://www.rfc-editor.org/rfc/rfc5661#section-5.8.1.11

It is likely that this is causing the 10025 (NFS4ERR_BAD_STATEID) and 10020 (NFS4ERR_NOFILEHANDLE) NFS errors that occur some time during the workloads.