Somewhat related, RedHat withdrew from the attempt to productionize BRTFS, apparently it was fully removed in RHEL 8:

- https://access.redhat.com/solutions/197643

Also, there's a PDF doc (from a conference presentation), covering many layers of potential alternatives for ZFS features:

- https://news.ycombinator.com/item?id=38484598

But "just" slapping all these layers on each other (configuring each individually and then hoping for the best) doesn't seem like the best idea for production systems either.

I guess back in the Sun/Solaris days, people still had the luxury of releasing (major) features in major versions, every few years instead of weeks or months... and as far as storage, backup, security solutions go - can't really do this right with the move fast & break things culture...