[CentOS] Preventing the nightly backup from disturbing the cache
Andy Green
andy at warmcat.com
Mon Apr 24 21:14:46 UTC 2006
Adam Gibson wrote:
> I am rather surprised that this has not been dealt with by now. Why
> mess with the currently cached information when you know that the files
> being read will be many times more than your memory/swap space and will
> only need to be read once.
It's possible to use the flag
O_DIRECT
http://homepages.cwi.nl/~aeb/linux/man2html/man2/open.2.html
It's up to your backup program if it wants to use the flag or not, but
it is there.
-Andy
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