Btrfs is reliable and stable - when you're running it on a single disk. That's what tends to the default mode for operating system installs that use Btrfs. I us

Btrfs is reliable and stable - when you're running it on a single disk. That's what tends to the default mode for operating system installs that use Btrfs. I use it on all my single-disk installs to get checksumming, COW, and transparent compression. It also seems to be pretty solid in enterprise-friendly RAID10 software mode. Anything outside of that should be treated with extreme caution and avoided for anything you can't afford to lose. For RAID5/6 in particular, as far as I know, little has changed since the discovery of a major corruption-creating bug (which supposedly was going to require a complete rethink of major portions of the Btrfs architecture). It's an embarrassing situation, but no one seems to want to work on it because it would require a lot of work to fix, and anyone who's paying people to work on Btrfs isn't going to run RAID6 in production anyway. It's unfortunate, but the real best advice to anyone who wants software RAID and doesn't know exactly what they're getting into is "just use ZFS".