Public bug reported: If you install Xen on your Ubuntu 20.04 system with ZFS, the system becomes unbootable because the adjustments made by Canonical to GRUB by providing 10_linux_zfs to override 10_linux aren't done to 20_linux_xen as well. I'm not asking for the same level of zys integration with a Xen system, I'm just asking for a bootable system. The following patch was posted to the GRUB mailing list and it would be good to backport it so that people don't experience systems that don't boot.
https://lists.gnu.org/archive/html/grub-devel/2020-12/msg00239.html Other people have experienced this as well based on https://askubuntu.com/questions/1271948/ubuntu-20-04-with-zfs-root- fails-to-boot-after-installing-xen ** Affects: grub Importance: Unknown Status: Unknown ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Bug watch added: GNU Savannah Bug Tracker #59614 http://savannah.gnu.org/bugs/?59614 ** Also affects: grub via http://savannah.gnu.org/bugs/?59614 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1908796 Title: 20_linux_xen is missing the same treatments of 10_linux_zfs creating unbootable Ubuntu 20.04 ZFS systems with Xen To manage notifications about this bug go to: https://bugs.launchpad.net/grub/+bug/1908796/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs