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...g into an issue occasionally with their app running CentOS 6 on an NFS mount. The problem is essentially that, from a single CentOS 6 client, the client sometimes gets the wrong file size back from a stat() call. The problem specifically seems to happen after mmap and ftruncate calls. The former envionrment for the application was CentOS 4 where is has run for many years with no apparent issues. Here's an strace output showing the problem: 13:10:38.270134 stat("trunk_file14", {st_mode=S_IFREG|0600, st_size=36528128, ...}) = 0 <0.000019> 13:10:38.270204 open("trunk_fi...