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[Xen-users] Xen on Debian Stretch on UEFI
- To: xen-users@xxxxxxxxxxxxxxxxxxxx
- From: Ian Macdonald <imac@xxxxxxxxxx>
- Date: Thu, 19 Apr 2018 10:12:08 +0200
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- Delivery-date: Thu, 19 Apr 2018 08:13:41 +0000
- List-id: Xen user discussion <xen-users.lists.xenproject.org>
- Openpgp: preference=signencrypt
Hi,
I have been setting up a new server to run Xen, but can't seem to get
the machine to boot the hypervisor correctly. The server has UEFI
firmware and I don't think we can run it in BIOS compatibility mode
because the particular hardware configuration requires full UEFI support
in order for everything to work.
I have installed Debian Stretch on the server and can boot via UEFI into
GRUB and then Linux just fine.
I have tried following the directions found on this page in order to get
Xen booting:
https://wiki.xenproject.org/wiki/Xen_EFI
I have found that the Debian xen-hypervisor-4.8-amd64 package installs a
file at /boot/xen-4.8-amd64.efi. Should I be able to use this as my EFI
boot file? Or do I still need to actually compile Xen from sources in
order to get a working 'xen.efi' file?
I have tried copying all files from the /boot directory into
/boot/efi/EFI/xen/ and then creating /boot/efi/EFI/xen/xen-4.8-amd64.cfg
with the following contents:
[global]
default=xen
[xen]
options=console=vga loglvl=all noreboot
kernel=vmlinuz-4.9.0-6-amd64
root=UUID=c0589119-f679-4b3c-ac62-7a686ffe00b9 ro
ramdisk=initrd.img-4.9.0-6-amd64
I then created an EFI boot entry pointing at Xen:
efibootmgr -w -L Xen -l "\EFI\xen\xen-4.8-amd64.efi" -c
When I try to boot from that menu entry, the machine's firmware just
returns to system setup or to the boot menu, suggesting to me that it
doesn't recognise or isn't able to boot from xen-4.8-amd64.efi. I also
tried renaming that file to xen.efi and having the config in xen.cfg
just in case that made a difference, but the result was the same.
I have tried booting Debian without using GRUB, using the kernel EFI
stub to boot, according to the instructions at
'https://wiki.debian.org/EFIStub'. I got that to work for booting the
normal kernel, so I know I can boot the mainline Linux kernel directly
from the EFI firmware without GRUB, but I've not been able to boot the
Xen hypervisor.
Any suggestions or advice would very much appreciated.
Many thanks,
-Ian Macdonald
GreenNet
--
Ian Macdonald
GPG/PGP: 0778 889F EE5D DFB4 D195 97A7 779B D6BF A305 DEFC
XMPP/OTR: imac@xxxxxxxxxx Wire.com: @idmacdonald
GreenNet Ltd, 56-64 Leonard Street, London EC2A 4LT
UK Tel: 0330 355 4011
Intl: +44 20 7065 0935
Twitter: @GreenNetISP
Registered in England & Wales, Company No. 02070438
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