The bootOrder swap alone didn't fix the install — even with `windows-iso` at
bootOrder:1, OVMF UEFI still timed out reading the SATA CDROM:
BdsDxe: starting Boot0001 "UEFI QEMU DVD-ROM QM00001 " from ... Sata(...)
BdsDxe: failed to start Boot0001 ... : Time out
BdsDxe: No bootable option or device was found.
Diagnosis (debug pod mounting the live PVC):
- /pvc/disk.img IS a valid bootable ISO9660 image — `file` reports
"ISO 9660 CD-ROM filesystem data 'SSS_X64FRE_EN-US_DV9' (bootable)".
- bytes 0..15: zeros (NOT QCOW2 magic 51 46 49 fb).
- bytes 32769..32773: "CD001" — ISO9660 primary volume descriptor at the
correct offset.
So content was fine. The bug is in how KubeVirt + QEMU + Longhorn expose a
Filesystem-mode PVC's `/disk.img` as a SATA CDROM. With Block-mode the
underlying volume IS the raw ISO9660 sectors, OVMF reads them directly,
no QEMU file-emulation layer. This is the recommended pattern for ISO
install media on KubeVirt + Longhorn.
Migration:
- Replace `kind: PersistentVolumeClaim` with `kind: DataVolume` (CDI manages
the underlying PVC + upload-target pod).
- Set `pvc.volumeMode: Block`.
- Annotate `cdi.kubevirt.io/storage.contentType: kubevirt` so CDI keeps raw
bytes (no QCOW2 wrap).
- VM volume reference changes from `persistentVolumeClaim.claimName` to
`dataVolume.name`. KubeVirt's VMI controller blocks VM start until DV
phase is Succeeded (upload completed).
Operator step after this lands:
1. Wait for DV `phase: UploadReady`
kubectl get dv -n kubevirt-vms windows-server-2025-iso -w
2. virtctl image-upload dv windows-server-2025-iso -n kubevirt-vms \
--image-path "...\en-us_windows_server_2025...iso" \
--uploadproxy-url https://localhost:8443 --insecure --no-create
3. Re-flip runStrategy to Always (was set to Halted live-side during
migration; this commit keeps the manifest at Always).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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