[JdeBP]

Yes. For starters, vdev and mdev exist.

* https://news.ycombinator.com/item?id=11302557

* https://news.ycombinator.com/item?id=11609980

[lksgkjhsgkjh]

vdev was already given up again:

> This system is mothballed.

From its Github page at https://github.com/jcnelson/vdev