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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] EFI boot unsuccessful with Ubuntu 18.04 dom0
> about your grub configuration to load Xen:
> are you using your default distro's config?
my distro is
lsb_release -rd
Description: openSUSE Leap 15.0
Release: 15.0
but my relevant pkgs are newer than distro release versions, each sourced from
here:
Kernel, Efi
https://build.opensuse.org/project/show/home:pgnd:Kernel:stable
Xen, Qemu
https://build.opensuse.org/project/show/home:pgnd:Virtualization:Xen
https://build.opensuse.org/project/show/home:pgnd:Virtualization:qemu
Grub2
https://build.opensuse.org/package/show/home:pgnd:grub2/grub2
> Is it multiboot or multiboot2?
The grub multiboot modules are available
find /usr/share/grub2/x86_64-efi -name *multiboot*
/usr/share/grub2/x86_64-efi/multiboot.module
/usr/share/grub2/x86_64-efi/multiboot2.module
/usr/share/grub2/x86_64-efi/multiboot.mod
/usr/share/grub2/x86_64-efi/multiboot2.mod
grep multiboot /boot/grub2/x86_64-efi/command.lst
module2: multiboot2
module: multiboot
multiboot2: multiboot2
multiboot: multiboot
but, reading
https://wiki.xenproject.org/wiki/Xen_EFI
current Grub2.02, here, apparently lacks the multiboot2-enabling patch
[Inspect the grub.cfg. Make sure that it has 'multiboot2' and 'module2'
for Xen. You may need the patch titled: [PATCH] Use grub-file to figure out
whether multiboot2 should be used for Xen.gz See [1]
[1]
https://lists.xen.org/archives/html/xen-devel/2017-03/txtCeHTNmz1hZ.txt
The grub2-bundled xen config,
cat /etc/grub.d/20_linux_xen
==> https://paste.fedoraproject.org/paste/sfDxWWhOFnv87IMPTUcYJQ
does reference `multiboot`, but NOT in the efi case,
192 if $is_efi; then
...
224 chainloader ${rel_efi_dir}/${xen_basename}
${xen_basename} ${SUSE_CMDLINE_XENEFI} $section
...
232 fi
using, instead, the chainloader.
Checking, the *generated* ('default' insofar as it's not manually modified)
config does use the chainloader,
cat /boot/grub2/grub.cfg
...
### BEGIN /etc/grub.d/20_linux_xen ###
menuentry 'OpenSUSE, with Xen hypervisor' --class opensuse
--class gnu-linux --class gnu --class os --class xen $menuentry_id_option
'xen-gnulinux-simple-8d1e6d0f-a6d7-4bb2-8465-676586d534e' {
insmod part_gpt
insmod fat
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root
--hint-bios=hd4,gpt2 --hint-efi=hd4,gpt2 --hint-baremetal=ahci4,gpt2
--hint='hd0,gpt2' 62B1-21F3
else
search --no-floppy --fs-uuid --set=root 62B1-21F3
fi
echo 'Loading Xen 4.12.0_03-lp150.628 with Linux
4.20.13-lp150.2.gfb7c4a5-default ...'
chainloader /efi/opensuse/xen-4.12.0_03-lp150.628.efi
xen-4.12.0_03-lp150.628.efi /mapbs config.1
}
submenu 'Advanced options for OpenSUSE (with Xen hypervisor)'
$menuentry_id_option 'gnulinux-advanced-8d1e6d0f-a6d7-4bb2-8465-676586d534e' {
submenu 'Xen hypervisor, version 4.12.0_03-lp150.628'
$menuentry_id_option
'xen-hypervisor-4.12.0_03-lp150.628-8d1e6d0f-a6d7-4bb2-8465-676586d534e' {
menuentry 'OpenSUSE, with Xen
4.12.0_03-lp150.628 and Linux 4.20.13-lp150.2.gfb7c4a5-default' --class
opensuse --class gnu-linux --class gnu --class os --class xen
$menuentry_id_option
'xen-gnulinux-4.20.13-lp150.2.gfb7c4a5-default-advanced-8d1e6d0f-a6d7-4bb2-8465-676586d534e'
{
insmod part_gpt
insmod fat
set root='hd0,gpt2'
if [ x$feature_platform_search_hint =
xy ]; then
search --no-floppy --fs-uuid
--set=root --hint-bios=hd4,gpt2 --hint-efi=hd4,gpt2 --hint-baremetal=ahci4,gpt2
--hint='hd0,gpt2' 62B1-21F3
else
search --no-floppy --fs-uuid
--set=root 62B1-21F3
fi
echo 'Loading Xen
4.12.0_03-lp150.628 with Linux 4.20.13-lp150.2.gfb7c4a5-default ...'
chainloader
/efi/opensuse/xen-4.12.0_03-lp150.628.efi xen-4.12.0_03-lp150.628.efi /mapbs
config.2
}
menuentry 'OpenSUSE, with Xen
4.12.0_03-lp150.628 and Linux 4.20.12-lp150.5.g5cf91fd-default' --class
opensuse --class gnu-linux --class gnu --class os --class xen
$menuentry_id_option
'xen-gnulinux-4.20.12-lp150.5.g5cf91fd-default-advanced-8d1e6d0f-a6d7-4bb2-8465-676586d534e'
{
insmod part_gpt
insmod fat
set root='hd0,gpt2'
if [ x$feature_platform_search_hint =
xy ]; then
search --no-floppy --fs-uuid
--set=root --hint-bios=hd4,gpt2 --hint-efi=hd4,gpt2 --hint-baremetal=ahci4,gpt2
--hint='hd0,gpt2' 62B1-21F3
else
search --no-floppy --fs-uuid
--set=root 62B1-21F3
fi
echo 'Loading Xen
4.12.0_03-lp150.628 with Linux 4.20.12-lp150.5.g5cf91fd-default ...'
chainloader
/efi/opensuse/xen-4.12.0_03-lp150.628.efi xen-4.12.0_03-lp150.628.efi /mapbs
config.3
}
menuentry 'OpenSUSE, with Xen
4.12.0_03-lp150.628 and Linux 4.20.12-lp150.4.gb35c1fc-default' --class
opensuse --class gnu-linux --class gnu --class os --class xen
$menuentry_id_option
'xen-gnulinux-4.20.12-lp150.4.gb35c1fc-default-advanced-8d1e6d0f-a6d7-4bb2-8465-676586d534e'
{
insmod part_gpt
insmod fat
set root='hd0,gpt2'
if [ x$feature_platform_search_hint =
xy ]; then
search --no-floppy --fs-uuid
--set=root --hint-bios=hd4,gpt2 --hint-efi=hd4,gpt2 --hint-baremetal=ahci4,gpt2
--hint='hd0,gpt2' 62B1-21F3
else
search --no-floppy --fs-uuid
--set=root 62B1-21F3
fi
echo 'Loading Xen
4.12.0_03-lp150.628 with Linux 4.20.12-lp150.4.gb35c1fc-default ...'
chainloader
/efi/opensuse/xen-4.12.0_03-lp150.628.efi xen-4.12.0_03-lp150.628.efi /mapbs
config.4
}
}
}
### END /etc/grub.d/20_linux_xen ###
...
> Does it boot the gz image or the efi file?
from above, it chainloads the .efi
Atm, I've no idea _why_ Grub2 doesn't use multiboot2 with Xen/EFI.
There's this Redhat thread,
Bug 1486002 - grub2-mkconfig does not work if xen.gz is installed.
https://bugzilla.redhat.com/show_bug.cgi?id=1486002
which _may_ shed some light. Maybe cc @ Konrad can comment further?
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