When I last took a serious look at btrfs its RAID 5 and RAID 6 modes could lose a whole lot of data if a single drive crashed or if the system lost power during

When I last took a serious look at btrfs its RAID 5 and RAID 6 modes could lose a whole lot of data if a single drive crashed or if the system lost power during a write. That's not supposed to happen on a RAID system with a journal. From what I understand single copy setups, RAID 1, and RAID 10 never had the same problem. It's left a bad taste for a lot of people though. Very early ext4 versions also had some data loss or data corruption, but I never hear people dismiss it completely for that brief spot of its history. Maybe part of that is because it was around 17 years ago and it's been a reliable default OS for many years now.