On 10/28/2012 03:06 PM, Michael Kjörling wrote:
You_can_ calculate a worst case scenario figure (no compression possible on the new payload data), but that's about it.
Well, there are those humorous edge cases where you compress a tiny amount of uncompressible data, and the "compressed" version ends up being larger. Not sure if that applies to the specific algorithms that btrfs uses, but I've seen it happen with tiny datasets before. Even worst case could be hard to get right perhaps!
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