I read the link, and I disagree that it answers these questions. It is presented as "the truly open source successor to the ZFS project", which is why I understood it was a fork.
I agree that btrfs is not ready for production (and I'm not ready to hand my precious bytes to it yet), and will probably never be as feature rich as ZFS. But the licensing issue will always exist, and Linux needs a modern file system -- btrfs.
That said, a lot of people/businesses use ZFS on Linux in production, so it's nice that there is an central place where they can find documentation about it.
I agree that btrfs is not ready for production (and I'm not ready to hand my precious bytes to it yet), and will probably never be as feature rich as ZFS. But the licensing issue will always exist, and Linux needs a modern file system -- btrfs.
That said, a lot of people/businesses use ZFS on Linux in production, so it's nice that there is an central place where they can find documentation about it.