[edwtjo]

We are talking about the Linux port, which isn't really the same functionality that's already running on Solaris/FreeBSD. I've been running ZFS on FreeBSD for a while and it works pretty ok, but even that isn't the same as the functionality on Solaris.

The FAQ even clearly states that they only support ZVOL operations. Kinda like mdadm and lvm2, but without POSIX FS compability. Anyhow, my point is that this isn't "production quality" either.

But you are right of course in that the on disk format for BTRFS hasn't stabilized yet, last time I checked, and that it is a project in its childhood.