Comment # 6 on bug 1179981 from Michael Chang

(In reply to Marco M. from comment #3)

> Now I kindly ask: Is EFI on raid1 supposed to be supported even without
> using shim (without selecting secureboot in bootloader configuration)?
> In LEAP 42.3 this was supported. If in LEAP 15.2 it is officially NOT
> supported then the bug can be closed (but I suggest to better specify this
> aspect in documentation).

I don't think there's any difference in 42.3 and 15.2 regarding this support.
It depends on how grub2-install was invoked, with --removable or --no-nvram you
could have successful installation. On the other hand, if the installation
tried to create boot variables for mdadm raid1 device then the attempt may fail
since no viable uefi device path could be used to represent that.

However the shim-install wrapper uses member device of raid1 to compose device
path for creating uefi boot variable so that the firmware could treat them as
plain disks/partitions.