Re: [rfc] Ignore Fsync Calls in Laptop_Mode

[david]

On Fri, 27 May 2011, Theodore Tso wrote:

> If you are willing to rewrite the *entire* database to a completely new file each
> time you want to write out some data, and only delete the old database
> once the new database has been written out, then you're fine.   If the file is too
> big you can delay the time period between a complete writeout of the
> database.  But then if you drop your laptop and the battery slips out, you'll
> lose more data.  Life is full of tradeoffs.

actually, even in this case don't you need a barrier or fsync to make sure 
the new file is completely written before the old file goes away?

David Lang
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