I've got a system of 55 workstations that share two NFS mount points on a central server. Recently over the past few days, I've noticed an increasing number of "GETATTR" requests filtering in from the workstations for no apparent reason. I can see these request clearly in a wireshark trace, but I don't know how to trace them down.
Can anybody share advice on how I can debug this problem and trace the generators of these calls?
Update: With trial and error, it turns out the GETATTRS were being caused by preload. For the future, it would still be nice to know how I could determine what process is causing what NFS traffic.