@shlee Hmm, if you have latency sensitive sync writes, could that kind of set up hurt it, if the device ends up getting a write queue that includes the ZIL writes, but only after it finishes the special writes? I haven't looked at the relevant parts of the code though, so just at a guess. Guessing some more, this sounds like it'd go in the "more complicated for little benefit" box for me. But if you do it, let us know! I didn't even think of using my Optane like that!
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ZFS people. -
ZFS people.@shlee If you've already got SSDs for the array, then I don't think it'd be super useful? That being said, mine is HDDs and only Optane for SLOG, so I'm not in a comparable situation...