Try to close the file on the first nfs client before reopening it on the second nfs client. NFS has something called "close-to-open cache consistency". This means that two clients which have the same nfs file open, cannot rely on seeing the updates from the respective other client. If one clients closes, and the other client opens thereafter, it should see the changes. If you want multiple clients to write at the same time, you should make sure they only write non-overlapping sections (and then all need to close for synching). Let me know if this worked for you. J.
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