For reference here is Colin's post to grub-devel, no followups since 2011-02 it seems.
http://lists.gnu.org/archive/html/grub-devel/2011-02/msg00011.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/736743 Title: environment block not implemented on btrfs -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
