From 16110c6be6903be52ebd94c095aae20a87545892 Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@selfip.ru>
Date: Thu, 6 Nov 2014 23:13:09 +0300
Subject: [PATCH 1/2] add CD-ROM only if not used disk_image, also boot from it
 only if CD-ROM present

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
---
 builder/qemu/builder.go  | 14 ++++++++++----
 builder/qemu/step_run.go |  4 +++-
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/builder/qemu/builder.go b/builder/qemu/builder.go
index 1c3d2cdca..7df0ff8c2 100644
--- a/builder/qemu/builder.go
+++ b/builder/qemu/builder.go
@@ -418,6 +418,15 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		return nil, fmt.Errorf("Failed creating Qemu driver: %s", err)
 	}
 
+	steprun := &stepRun{}
+	if !b.config.DiskImage {
+		steprun.BootDrive = "once=d"
+		steprun.Message = "Starting VM, booting from CD-ROM"
+	} else {
+		steprun.BootDrive = "c"
+		steprun.Message = "Starting VM, booting disk image"
+	}
+
 	steps := []multistep.Step{
 		&common.StepDownload{
 			Checksum:     b.config.ISOChecksum,
@@ -436,10 +445,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 		new(stepHTTPServer),
 		new(stepForwardSSH),
 		new(stepConfigureVNC),
-		&stepRun{
-			BootDrive: "once=d",
-			Message:   "Starting VM, booting from CD-ROM",
-		},
+		steprun,
 		&stepBootWait{},
 		&stepTypeBootCommand{},
 		&common.StepConnectSSH{
diff --git a/builder/qemu/step_run.go b/builder/qemu/step_run.go
index bb2876f86..3f900d651 100644
--- a/builder/qemu/step_run.go
+++ b/builder/qemu/step_run.go
@@ -82,7 +82,9 @@ func getCommandArgs(bootDrive string, state multistep.StateBag) ([]string, error
 	defaultArgs["-netdev"] = fmt.Sprintf("user,id=user.0,hostfwd=tcp::%v-:22", sshHostPort)
 	defaultArgs["-device"] = fmt.Sprintf("%s,netdev=user.0", config.NetDevice)
 	defaultArgs["-drive"] = fmt.Sprintf("file=%s,if=%s,cache=%s", imgPath, config.DiskInterface, config.DiskCache)
-	defaultArgs["-cdrom"] = isoPath
+	if !config.DiskImage {
+		defaultArgs["-cdrom"] = isoPath
+	}
 	defaultArgs["-boot"] = bootDrive
 	defaultArgs["-m"] = "512M"
 	defaultArgs["-vnc"] = vnc

From 2126615b3d4f0532ff49299fffb08fcb81a43233 Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@selfip.ru>
Date: Thu, 6 Nov 2014 23:47:00 +0300
Subject: [PATCH 2/2] disk_filename is used for artifacts, but it missed in
 case of disk_image = true

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
---
 builder/qemu/step_copy_disk.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/builder/qemu/step_copy_disk.go b/builder/qemu/step_copy_disk.go
index 7f2efe30e..54c3084ac 100644
--- a/builder/qemu/step_copy_disk.go
+++ b/builder/qemu/step_copy_disk.go
@@ -2,10 +2,11 @@ package qemu
 
 import (
 	"fmt"
-	"github.com/mitchellh/multistep"
-	"github.com/mitchellh/packer/packer"
 	"path/filepath"
 	"strings"
+
+	"github.com/mitchellh/multistep"
+	"github.com/mitchellh/packer/packer"
 )
 
 // This step copies the virtual disk that will be used as the
@@ -19,6 +20,7 @@ func (s *stepCopyDisk) Run(state multistep.StateBag) multistep.StepAction {
 	ui := state.Get("ui").(packer.Ui)
 	path := filepath.Join(config.OutputDir, fmt.Sprintf("%s.%s", config.VMName,
 		strings.ToLower(config.Format)))
+	name := config.VMName + "." + strings.ToLower(config.Format)
 
 	command := []string{
 		"convert",
@@ -39,6 +41,8 @@ func (s *stepCopyDisk) Run(state multistep.StateBag) multistep.StepAction {
 		return multistep.ActionHalt
 	}
 
+	state.Put("disk_filename", name)
+
 	return multistep.ActionContinue
 }