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A comment on Demystifying OpenZFS 2.0. Parent comment

Re:Demystifying OpenZFS 2.0 by bhouston on Thursday November 18, 2021 @11:04AM (#29266965)
That you for being right!

So many people misunderstand the ZIL SLOG, including the guy you are responding to.

I think most posts on the internet about the ZIL SLOG do not explain it correctly and thus a large number of people misunderstand it.

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Re:Demystifying OpenZFS 2.0 by magicalhippo on Thursday November 18, 2021 @11:24AM (#29267211)
Yes it took me some time to fully grasp how the ZIL and SLOG worked and how it is not a cache.

There was some work done[1] on proper write-back cache for ZFS by Nexenta several years ago, but it seems it either stalled or there was a decision to keep it in-house as it hasn't made its way back to OpenZFS.

[1]: https://openzfs.org/wiki/Writeback_Cache

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