I've been using btrfs in non-redundant and "raid1" (really just chunk duplication) setups for a while now. I've not had any major problems in managing the data

I've been using btrfs in non-redundant and "raid1" (really just chunk duplication) setups for a while now. I've not had any major problems in managing the data pools or catastrophic data loss. In fact, btrfs checksums detected corruption that I isolated to a bad ram module on one of my machines that went undetected on ext4. At this point I'm sticking with btrfs instead of going with zfs because of the flexibility for growing/shrinking volumes and adding/removing devices in a non-destructive manner.