I used btrfs on an EC2 instance with two local SSDs that were mirrored for a CI pipeline running Concourse. It would botch up every few months, and I got to aut

I used btrfs on an EC2 instance with two local SSDs that were mirrored for a CI pipeline running Concourse. It would botch up every few months, and I got to automating setup so that it was easy to recreate. I never did find the actual source of the instance botch-up though. It was either the local PostgreSQL instance running on btrfs, btrfs, or the Concourse software. I pretty much ruled out the PostgreSQL being the originating source of the issue, but didn't get further than that. I don't know if anyone would suspect mdadm. Other than whatever that instability was, I can say that the performance was exceptional and would use that setup again, with more investigation into causes of the instability.