Description of problem:

On a system where /boot has been formatted with VFAT (as recommended by the original boot loader specification), the symbolic link /boot/grub2/grubenv does not work. This would not be a problem on UEFI systems except that grub2-mkconfig is writing to the symbolic link instead of writing directly to the grubenv file on the ESP.

In my opinion, grub2-mkconfig should not be looking for or writing to files under /boot/grub2 on UEFI systems. It should write directly to the files in the area designated for UEFI config files -- $ESP/efi/fedora.

Version-Release number of selected component (if applicable):

grub2-efi-x64-2.02-78.fc30.x86_64

How reproducible:

Always

Steps to Reproduce:

1. Format $BOOT with VFAT and use it directly as $ESP

2. sed -i '/^GRUB_CMDLINE_LINUX=/s/"$/ test1"/' /etc/default/grub

3. grub2-mkconfig -o /boot/efi/fedora/grub.cfg

Actual results:

/boot/efi/fedora/grubenv is not updated as can be seen with the following command:

$ grub2-editenv /boot/efi/fedora/grubenv list

Expected results:

/boot/efi/fedora/grubenv should be updated with the new kernel arguments

Additional info:

This was not an issue in previous releases of Fedora. In previous versions, the kernel arguments were stored in the grub.cfg file under the correct directory ($ESP/efi/fedora).

Link to original boot loader specification:

https://systemd.io/BOOT_LOADER_SPECIFICATION#technical-details