GRUB is not able to detect ZFS pool if snaphsot of top level boot
pool is created. This issue is observed with GRUB versions up to
v2.06 if extensible_dataset feature is enabled on ZFS boot pool.
compatibility=grub2-2.06 would enable all read-only compatible
zpool features except extensible_dataset and other features that
depend on it.
The existing grub2 compatibility file lists all read-only features
that can be enabled on boot pool for grub with version 2.12
onwards.
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
1040cfb76a