Inside of Oracle, we've decided to make btrfs the default filesystem for
Oracle Linux. This is going into beta now and we'll increase our usage
of btrfs in production over the next four to six months. This is a
really big step forward, but it doesn't cover btrfs in database
workloads (since we recommend asm for that outside of the filesystem).
What this means is that absolutely cannot move forward without btrfsck.
RH, Fujitsu, SUSE and others have spent a huge amount of time on the filesystem
and it is clearly time to start putting it into customer hands.