Add support for saving VM state when a test fails.

image_to_vm.sh

 #!/bin/bash
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Script to convert the output of build_image.sh to a VMware image and write a
 # corresponding VMware config file.
 
 # Load common constants.  This should be the first executable line.
@@ skipping 183 matching lines @@
       --enable_tablet=true
 else
   sudo python "$(dirname $0)/fixup_image_for_qemu.py" \
       --mounted_dir="${TEMP_MNT}" \
       --enable_tablet=false
 fi
 
 # Modify the unverified usb template which uses a default usb_disk of sdb3
 sudo sed -i -e 's/sdb3/sda3/g' "${TEMP_MNT}/boot/syslinux/usb.A.cfg"
 
+# Force the usbserial_generic driver to recognize the QEMU usb serial device
+# The guest usb serial device is used to communicate with the QEMU monitor
+sudo sed -i -e \
+  's/^.*append.*/& usbserial.vendor=0x0403 usbserial.product=0x6001/' \
+  "${TEMP_MNT}/boot/syslinux/usb.A.cfg"
+
 # Unmount everything prior to building a final image
 sync
 trap - INT TERM EXIT
 cleanup
 
 # TOOD(adlr): pick a size that will for sure accomodate the partitions.
 dd if=/dev/zero of="${TEMP_IMG}" bs=1 count=1 \
   seek=$((${FLAGS_vdisk_size} * 1024 * 1024 - 1))
 
 GPT_FULL="false"
@@ skipping 67 matching lines @@
   echo "${VMX_CONFIG}"
 fi
 
 
 if [ "${FLAGS_format}" == "qemu" ]; then
   echo "If you have qemu-kvm installed, you can start the image by:"
   echo "sudo kvm -m ${FLAGS_mem} -vga std -pidfile /tmp/kvm.pid -net nic,model=e1000 " \
        "-net user,hostfwd=tcp::9222-:22 \\"
   echo "        -hda ${FLAGS_to}/${DEFAULT_QEMU_IMAGE}"
 fi