[systemd-devel] gummiboot can't be installed on ESP which is soft RAID1 metadata=0.9 partition

[Andrey Borzenkov]

В Mon, 14 Apr 2014 18:22:50 +0200
Francis Moreau <francis.moro at gmail.com> пишет:

> On 04/14/2014 06:16 PM, Lennart Poettering wrote:
> > On Mon, 14.04.14 18:01, Francis Moreau (francis.moro at gmail.com) wrote:
> > 
> >> Hello,
> >>
> >> "gummiboot install" fails when ESP is MD RAID1 device using metadata 0.9
> >> or 1.0.
> >>
> >> I don't think using such RAID for ESP would lead to issue.
> >>
> >> Is there any reason gummiboot doesn't want to be installed on such
> >> partition ?
> > 
> > The installer will make sure that the ESP is on GPT and carries the right
> > type UUID. We do that for safety reasons, since that's the requirement
> > made by UEFI, and how the bootloader is found.
> > 
> > You cannot place the ESP on sw RAID, since the firmware might want to
> > write to the ESP (most won't do that, but could, and the tianocore
> > implemenation you use in qemu certainly does). 
> 
> Does UEFI allow firmware to write to ESP ?
> 

Yes, it does. ESP is really not special in this respect.

> If so that would indeed prevent ESP to be on soft RAID.
> 
> Thanks
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