• circuitfarmer@lemmy.sdf.org
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    1 month ago

    But if the file system needs extra writes anyway for CoW, and the SSD needs its own CoW, then wouldn’t that end up being exponential writes? Or is there some mechanism which mitigates that?

    • InverseParallax@lemmy.world
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      1 month ago

      The fs does cow then releases the old block if appropriate.

      The ssd has a tracking map for all blocks, it’s cow relies on a block being overwritten to free the old block.

      Basically it works out the same either way.