anecdotal report: Im running a medium sized MariaDB database of appointments and invoice backups on a 4 disk BTRFS filesystem with deduplication. snapshots work, its stable, and it performs well.

I feel like so much of BTRFS though was death by committee. It was trying to do every single thing ZFS did, regardless of whether or not the specific feature from ZFS was mediocre to begin with.

focusing on a release cycle and communicating would have helped it alot instead of vague things like "it is ready enough" and "some features arent ready"