In so many ways btrfs isn't ready for prime time. If was stable, its benefits would be pretty strong. However, its code base is changing too rapidly and its ability to recover from problems is pretty poor. It tragic that several distributions changed to using btrfs by default.
Btrfs Will Finally "Strongly Discourage" You When Creating RAID5 / RAID6 Arrays - Phoronix
riddler wrote
In so many ways btrfs isn't ready for prime time. If was stable, its benefits would be pretty strong. However, its code base is changing too rapidly and its ability to recover from problems is pretty poor. It tragic that several distributions changed to using btrfs by default.