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Boot KVM guests via UEFI by default; per-image firmware setting

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Run 5 on the real host bisected the guest hang: the Debian 13 image
hangs after GRUB under SeaBIOS with or without our seed and with either
CPU model, and boots under OVMF. The image's legacy boot chain is the
problem, not the provider.

images.<key>.firmware is "uefi" (default) or "bios". The domain XML
emits <os firmware="efi"> with secure boot off, so libvirt selects the
OVMF binary and manages the NVRAM file, which the existing nvram undefine
flag removes. Direct-URL images default to UEFI too. OVMF joins the
hypervisor prerequisites; sample, config table, known gaps, decision log
and the execution log record the finding.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
kacerr
2026-09-10 19:13:51 +00:00
co-authored by Claude Fable 5.1
parent 5a6c889531
commit 9a393b1df8
12 changed files with 151 additions and 26 deletions
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internal/provider/kvm/image_test.go
+3 -3
View File
@@ -88,9 +88,9 @@ func TestResolveImage(t *testing.T) {
want imageSource
wantErr bool
}{
{"configured key", "debian-13", imageSource{Key: "debian-13", URL: "https://cloud.debian.org/d.qcow2", SHA256: "abc", Format: "qcow2"}, false},
{"direct https url", "https://x.example/img.qcow2", imageSource{URL: "https://x.example/img.qcow2", Format: "qcow2"}, false},
{"direct http url", "http://mirror/img.qcow2", imageSource{URL: "http://mirror/img.qcow2", Format: "qcow2"}, false},
{"configured key", "debian-13", imageSource{Key: "debian-13", URL: "https://cloud.debian.org/d.qcow2", SHA256: "abc", Format: "qcow2", Firmware: "uefi"}, false},
{"direct https url", "https://x.example/img.qcow2", imageSource{URL: "https://x.example/img.qcow2", Format: "qcow2", Firmware: "uefi"}, false},
{"direct http url", "http://mirror/img.qcow2", imageSource{URL: "http://mirror/img.qcow2", Format: "qcow2", Firmware: "uefi"}, false},
{"unknown key", "ubuntu", imageSource{}, true},
{"file url", "file:///tmp/x.qcow2", imageSource{}, true},
{"empty", "", imageSource{}, true},