Bug confirmed here:
https://github.com/zfsonlinux/grub/issues/5
and step 2 of
https://github.com/zfsonlinux/pkg-zfs/wiki/HOWTO-install-Ubuntu-14.04---15.04-to-a-Native-ZFS-Root-Filesystem
which advocates some craziness with udev to copy /dev/disk/by-id/ names to /dev/ .
Bug confirmed here:
https:/ /github. com/zfsonlinux/ grub/issues/ 5
and step 2 of
https:/ /github. com/zfsonlinux/ pkg-zfs/ wiki/HOWTO- install- Ubuntu- 14.04-- -15.04- to-a-Native- ZFS-Root- Filesystem
which advocates some craziness with udev to copy /dev/disk/by-id/ names to /dev/ .