Hi,
Following up on my last post on this topic (since there seemed to be at least some
interest): after evaluating the setup for a few weeks, I have decided that this is not as
good a solution as I had hoped.
In particular, the expected benefits of splitting data between a special vdev backed by a
bucket with small object size and a normal vdev backed by a bucket with much larger object
size did not materialize.
More details (including histograms) are available at
https://www.rath.org/zfs-on-nbd-my-verdict.html
Best,
-Nikolaus
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