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[FIX] script qemu: boot VMs via UEFI (Debian 13 boot loop)

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Debian 13 (trixie) genericcloud dropped the BIOS/GRUB-pc bootloader, so
SeaBIOS looped forever on "Booting Debian GNU/Linux" and the install
never completed. Boot via UEFI (OVMF) by default: trixie boots, and
Ubuntu/Debian 12/Fedora keep working (verified Debian 13 and Ubuntu
24.04 end to end). Add a --bios opt-out for hosts without OVMF, and pull
the UEFI firmware (ovmf / edk2-ovmf) with the libvirt/QEMU stack. VM
deletion already removes the nvram (undefine --nvram).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Mathieu Benoit 2026-07-19 09:53:21 +00:00
parent 79c69fb6d5
commit 2b7e20493a
1 changed files with 23 additions and 4 deletions
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27
script/qemu/deploy_qemu.py
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@ -360,11 +360,18 @@ TOOL_PACKAGES: dict[str, dict[str, str]] = {
# Paquets fournissant le démon libvirt + l'émulateur QEMU système. Ils sont
# INDISPENSABLES pour exécuter la VM : virsh/virt-install (clients) seuls ne
# créent pas le socket /var/run/libvirt/libvirt-sock.
# On inclut le firmware UEFI (OVMF/edk2) : le boot par défaut est UEFI
# (indispensable pour Debian 13+ ; les images récentes n'ont plus de BIOS).
DAEMON_PACKAGES: dict[str, list[str]] = {
"apt": ["libvirt-daemon-system", "qemu-system-x86"],
"dnf": ["libvirt-daemon-kvm", "qemu-kvm"],
"pacman": ["libvirt", "qemu-desktop", "dnsmasq"],
"zypper": ["libvirt-daemon", "libvirt-daemon-qemu", "qemu-kvm"],
"apt": ["libvirt-daemon-system", "qemu-system-x86", "ovmf"],
"dnf": ["libvirt-daemon-kvm", "qemu-kvm", "edk2-ovmf"],
"pacman": ["libvirt", "qemu-desktop", "dnsmasq", "edk2-ovmf"],
"zypper": [
"libvirt-daemon",
"libvirt-daemon-qemu",
"qemu-kvm",
"qemu-ovmf-x86_64",
],
"brew": [],
}
@ -977,6 +984,12 @@ def virt_install(
"--console",
"pty,target_type=serial",
]
# Boot UEFI par défaut : Debian 13 (trixie) et les images cloud récentes
# n'embarquent plus le chargeur BIOS/GRUB-pc et partent en boucle
# « Booting... » en SeaBIOS. UEFI (OVMF) fonctionne pour Ubuntu/Debian/
# Fedora. --bios force l'ancien BIOS si OVMF est indisponible.
if not args.bios:
cmd += ["--boot", "uefi"]
if not args.attach_console:
cmd.append("--noautoconsole")
runner.run(cmd, privileged=True)
@ -1127,6 +1140,12 @@ def build_parser() -> argparse.ArgumentParser:
action="store_true",
help="Attache la console série (sinon --noautoconsole).",
)
g_vm.add_argument(
"--bios",
action="store_true",
help="Force l'amorçage BIOS hérité au lieu d'UEFI (par défaut UEFI ; "
"n'utiliser que si le firmware OVMF est absent).",
)
g_cloud = p.add_argument_group("cloud-init")
g_cloud.add_argument(