It is actually a known issue between ZoL and GRUB: https://github.com/zfsonlinux/grub/issues/5 https://github.com/zfsonlinux/grub/issues/5 zpool status will s

It is actually a known issue between ZoL and GRUB: https://github.com/zfsonlinux/grub/issues/5 https://github.com/zfsonlinux/grub/issues/5 zpool status will show only basename component of the device name and grub will look for it in /dev only. As I created the pool with ata-* device names, which are constant per device, it will of course fail, because they are in the /dev/by-id/ and grub is not looking for them there. Next time there is a kernel update, I' going to try the env variable mentioned in the august 2017 comment. Hopefully it will work right.