btrfs more reliable?
Not for me. I have an Ml110G6 with P212 raid controller.
That should be either all ok or all fail, right? Nope. One disk had a part fail and that somehow got through the controller and corrupted the file systems. btrfsck happily tells me there are errors. When I look for the "-f" it just smiles at me. The ext4 partitions were recoverable.
Oh yes we need better metadata, but also background scrubs.