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It's not a useful measure because it's not the same thing at all. Dedup only works if the block is aligned to a ZFS block size. Compression will find blocks whi
by bensummers 17y ago
It's not a useful measure because it's not the same thing at all. Dedup only works if the block is aligned to a ZFS block size. Compression will find blocks which have no particular alignment.
- atamyrat 17y agoIf they were same thing, you'd get the exact result, but not an approximation. tar.x will compress chunks of data that is smaller than zfs block size. ZFS dedup + ZFS compression will compress them as well, so what's the problem?