On Wed, Jul 8, 2020 at 11:22 AM Dominique Martinet <asmad...@codewreck.org> wrote:
> Please test, but if a file is deemed not compressible (based on, not > sure what? the first few blocks?) then it will be stored in the > non-compressed version. > You can check with compsize after the fact if the file had been > compressed or not. > > This should be true unless the compress-force mount option is used, even > the chattr is only a hint > OK, this is an interesting piece of information I wasn't aware of. In this case, if the btrfs heuristics work OK in the majority of cases, the performance hit might not be there, as I feared. Some thorough investigation would be needed, though.
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