Debian Jessie failed to get ZFS root in grub-probe. It would ended up like this:

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$ sudo grub-probe /
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grub-probe: error: failed to get canonical path of `/dev/scsi-3600605b008b089301eb25768126fbaa6'.

Luckily, Someone at askubuntu suggested to set an env:

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ZPOOL_VDEV_NAME_PATH=1

In order to make GRUB recognize the env, we have to have newer version of GRUB. Since GRUB is a static application that sits on our boot time, why not compile it.

For the sake of completeness, don’t forget to install the necessary packages:

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sudo apt-get build-dep grub-efi-amd64

To compile:

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git clone git://git.savannah.gnu.org/grub.git
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cd grub
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./autgen.sh
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./configure --prefix=/usr --sbindir=/sbin --sysconfdir=/etc --with-platform=efi
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make -j$(nproc)
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sudo make install

Oh, don’t forget to install efibootmgr so that GRUB can register EFI.

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sudo apt install efibootmgr

The Commands

Now we can run everything well:

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$ sudo ZPOOL_VDEV_NAME_PATH=1 grub-probe /
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zfs

Install GRUB:

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$ sudo ZPOOL_VDEV_NAME_PATH=1 grub-install /dev/sda

Done.

Install GRUB for ZFS

The Commands

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