Re:The potential risk to ZFS created by the shift in its use...
by cookiecaper on Monday January 28, 2019 @09:42PM
(#19023263)
Yes. It's important to recognize that there's a big difference in one's willingness to adopt a technology if its creator is on staff. Chris Mason's full-time job is to make sure the thing he built works well for his employer.
If you work some place that doesn't have that kind of luxury, perhaps a little extra conservatism is warranted before you go deploying across "millions of servers".
However, I'm pretty sure if I boiled the commit history down for the kernel, most of Facebook's commits would be Flashcache, and not BTRFS.
What I forgot, though, is SuSE supports it as their enterprise FS of choice, which is maybe more important than Facebook.