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SubjectRe: File System Performance
On Mon, 2001-11-12 at 16:16, Andrew Morton wrote:

> Actually, tar _is_ doing funnies with /dev/null. Changelog says:
> 1995-12-21 François Pinard <>
> * buffer.c: Rename a few err variables to status.
> * extract.c: Rename a few check variables to status.
> Corrections to speed-up the sizeing pass in Amanda:
> * tar.h: Declare dev_null_output.
> * buffer.c (open_archive): Detect when archive is /dev/null.
> (flush_write): Avoid writing to /dev/null.
> * create.c (dump_file): Do not open file if archive is being
> written to /dev/null, nor read file nor restore times.
> Reported by Greg Maples and Tor Lillqvist.
> One wonders why.

For almost 6 years too - I suspect they optimized tar instead of
fixing the way amanda works.


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