Antoine Pitrou <pit...@free.fr> added the comment:

The write() man page says:

       The number of bytes written may be less than count if, for example, 
there is  insufficient  space  on
       the underlying physical medium, or the RLIMIT_FSIZE resource limit is 
encountered (see setrlimit(2)),
       or the call was interrupted by a signal handler after having written 
less  than  count  bytes.   (See
       also pipe(7).)

So, we could return the number of bytes successfully written, and let the next 
call fail.

Another possibility is to only write 2GB-1 and let the caller retry.
Most people use buffered I/O, and the buffered layer automatically retries.

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue9611>
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