Public bug reported: 10_linux was changed to exit early if / is zfs. That doesn't work if /boot is a ext4 filesystem which should be detected by the rest of 10_linux. The result is that grub doesn't create any entries for any kernels and the system isn't bootable, manual intervention is required.
I guess it should only "exit 0" if /boot is also zfs. https://git.launchpad.net/~ubuntu-core-dev/grub/+git/ubuntu/tree/debian/patches/ubuntu-zfs-enhance-support.patch?h=focal&id=6c5bbbb53b73060b4e8b1e8c00ab475ddb385b4e#n55 In this case /boot is a symlink into a ext4 filesystem, though I think the same thing would happen with /boot as a toplevel ext4 filesystem. This is grub2 (2.04-1ubuntu26.1) focal. ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1889757 Title: zfs root with ext3 /boot fails to create grub menu entries To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1889757/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
