add qcow2 and vmdk boot images

cmd/dkl-local-server/boot-img.go

@@ -56,6 +56,55 @@ func buildBootImgGZ(out io.Writer, ctx *renderContext) (err error) {
 	return
 }
 
+func buildBootImgQemuConvert(out io.Writer, ctx *renderContext, format string) (err error) {
+	imgPath, err := func() (imgPath string, err error) {
+		bootImg, err := os.CreateTemp(os.TempDir(), "boot.img-")
+		if err != nil {
+			return
+		}
+		defer rmTempFile(bootImg)
+
+		err = setupBootImage(bootImg, ctx)
+		if err != nil {
+			return
+		}
+
+		err = bootImg.Sync()
+		if err != nil {
+			return
+		}
+
+		imgPath = bootImg.Name() + "." + format
+
+		err = run("qemu-img", "convert", "-f", "raw", "-O", format, bootImg.Name(), imgPath)
+		if err != nil {
+			return
+		}
+		return
+	}()
+
+	defer os.Remove(imgPath)
+
+	if err != nil {
+		return
+	}
+
+	// send the result
+	img, err := os.Open(imgPath)
+	if err != nil {
+		return
+	}
+
+	io.Copy(out, img)
+	return
+}
+func buildBootQcow2(out io.Writer, ctx *renderContext) (err error) {
+	return buildBootImgQemuConvert(out, ctx, "qcow2")
+}
+func buildBootVmdk(out io.Writer, ctx *renderContext) (err error) {
+	return buildBootImgQemuConvert(out, ctx, "vmdk")
+}
+
 var grubSupportVersion = flag.String("grub-support", "1.1.0", "GRUB support version")
 
 func setupBootImage(bootImg *os.File, ctx *renderContext) (err error) {

cmd/dkl-local-server/ws-host.go

@@ -54,6 +54,13 @@ func (ws wsHost) register(rws *restful.WebService, alterRB func(*restful.RouteBu
 			Produces(mime.DISK + "+lz4").
 			Doc("Get the " + ws.hostDoc + "'s boot disk image (lz4 compressed)"),
 
+		b("boot.qcow2").
+			Produces(mime.DISK + "+qcow2").
+			Doc("Get the " + ws.hostDoc + "'s boot disk image (qcow2)"),
+		b("boot.vmdk").
+			Produces(mime.DISK + "+vmdk").
+			Doc("Get the " + ws.hostDoc + "'s boot disk image (VMDK)"),
+
 		// metal/local HDD upgrades
 		b("boot.tar").
 			Produces(mime.TAR).
@@ -186,6 +193,10 @@ func renderHost(w http.ResponseWriter, r *http.Request, what string, host *local
 		err = renderCtx(w, r, ctx, what, buildBootImgGZ)
 	case "boot.img.lz4":
 		err = renderCtx(w, r, ctx, what, buildBootImgLZ4)
+	case "boot.qcow2":
+		err = renderCtx(w, r, ctx, what, buildBootQcow2)
+	case "boot.vmdk":
+		err = renderCtx(w, r, ctx, what, buildBootVmdk)
 
 	default:
 		http.NotFound(w, r)