> on is a short hand for fletcher4 for non-deduped datasets and sha256 for deduped datasets * https://openzfs.github.io/openzfs-docs/Basic%20Concepts/Checksums

> on is a short hand for fletcher4 for non-deduped datasets and sha256 for deduped datasets * https://openzfs.github.io/openzfs-docs/Basic%20Concepts/Checksums.html https://openzfs.github.io/openzfs-docs/Basic%20Concepts/Chec... * https://people.freebsd.org/~asomers/fletcher.pdf https://people.freebsd.org/~asomers/fletcher.pdf * https://en.wikipedia.org/wiki/Fletcher%27s_checksum https://en.wikipedia.org/wiki/Fletcher%27s_checksum Strangely enough SHA-512 is actually (50%) faster than -256: > ZFS actually uses a special version of SHA512 called SHA512t256, it uses a different initial value, and truncates the results to 256 bits (that is all the room there is in the block pointer). The advantage is only that it is faster on 64 bit CPUs. * https://twitter.com/klarainc/status/1367199461546614788 https://twitter.com/klarainc/status/1367199461546614788