In our case, the problem was traced to lockd and portmap. Specifically, without access to lockd, NFS can only do the 30 second fallback method of retrying locks. We had restricted portmap to listen only on localhost, which is why lockd was unable to function properly. Once we unrestricted portmap appropriately, the problem was solved.
In our case, the problem was traced to lockd and portmap. Specifically, without access to lockd, NFS can only do the 30 second fallback method of retrying locks. We had restricted portmap to listen only on localhost, which is why lockd was unable to function properly. Once we unrestricted portmap appropriately, the problem was solved.