> ZFS blocksize is dynamic, power of 2, with a max size == recordsize. Minor clarification: recordsize is restricted to powers of 2, but blocksize is not -- it can be any multiple of sector size (512 bytes). For small files, this matters: a 37k file is stored in a 37k block. For larger, multi-block files, the size of each block is indeed a power of 2 (simplifies the math a bit).
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