Public bug reported:
libvirt supports running in UEFI mode and uses iPXE to enable network
booting. When MAAS gives shimx64.efi, as it does on all UEFI systems, to
iPXE it chainloads grub but fails to the grub prompt. If I modify MAAS
to give grubx64.efi instead of shimx64.efi UEFI booting works.
Ideally iPXE would be modified to properly chainload the shim however
MAAS could also check the user-agent when returning the boot file as
follows.
if option arch = 00:00 {
# pxe
filename "lpxelinux.0";
} elsif option arch = 00:07 and exists user-class and option user-class =
"iPXE" {
# iPXE uefi_amd64
filename "grubx64.efi";
} elsif option arch = 00:07 {
# uefi_amd64
filename "bootx64.efi";
} elsif option arch = 00:09 and exists user-class and option user-class =
"iPXE" {
# iPXE uefi_amd64
filename "grubx64.efi";
} elsif option arch = 00:09 {
# uefi_amd64
filename "bootx64.efi";
} elsif option arch = 00:0B {
# uefi_arm64
filename "grubaa64.efi";
} elsif option arch = 00:0C {
# open-firmware_ppc64el
filename "bootppc64.bin";
} elsif option arch = 00:0E {
# powernv
filename "pxelinux.0";
option path-prefix "ppc64el/";
} elsif option arch = 00:1F {
# s390x
filename "boots390x.bin";
option path-prefix "s390x/";
} else {
# pxe
filename "lpxelinux.0";
}
** Affects: maas
Importance: Undecided
Status: Triaged
** Affects: ipxe (Ubuntu)
Importance: Undecided
Status: New
** Also affects: ipxe (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1789319
Title:
Unable to load shimx64.efi using iPXE over UEFI
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