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envionment
2012 Oct 22
1
CentOS 6 NFS mmap I/O bug?
...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_file14...