Lazyweb: Educate me on NFS

[prog]

Google and Wikipedia aren't coming through for me on this one:

Imagine that we have a utility which, in the course of its duties, reads and writes files to a file system.

What sorts of behaviors would make it not NFS-safe? I thought NFS was totally transparent to man and beast alike, but perhaps this is not quite so?

Comments

[ubiquity.livejournal.com]

The only case I know of is if something else is attempting to write to that same file at the same time.