Mount DVD-RAM with --async option?

[Frank Noack]

Hi

I like to mount DVD-RAM media with async option for higher writing 
performance. For that i maked a /etc/hal/fdi/policy/01-dvd-ram.fdi

<?xml version="1.0" encoding="UTF-8"?> <!-- -*- SGML -*- -->

<deviceinfo version="0.2">
  <device>
    <match key="block.is_volume" bool="true">
      <match key="volume.is_disc" bool="true">
        <match key="volume.fsusage" string="filesystem">
          <match key="volume.fstype" string="udf">
            <match key="block.device" string="/dev/hdd">
              <merge key="volume.policy.desired_mount_point" 
type="string">DVD-RAM</merge>
           </match>
          </match>
        </match>
      </match>
    </match>
  </device>
</deviceinfo>

But i dont know what i must insert for disabling the default sync mount. I 
tested <merge key="volume.policy.mount_option.sync" type="bool">false</merge>
but it dont work.
Here is the output fro lshal:

udi = '/org/freedesktop/Hal/devices/volume_label_DVD_RAM'
  info.hal_mount.mounted_by_uid = 1000  (0x3e8)  (int)
  info.hal_mount.created_mount_point = '/media/DVD-RAM'  (string)
  volume.mount.valid_options = = false  (bool)
  volume.policy.desired_mount_point = 'DVD-RAM'  (string)
  volume.unmount.valid_options = {'lazy'} (string list)
  volume.mount.valid_options = 
{'ro', 'sync', 'dirsync', 'noatime', 'nodiratime', 'noexec', 'quiet', 'uid=', 'umask='} 
(string list)
  org.freedesktop.Hal.Device.Volume.method_execpaths = 
{'hal-system-storage-mount', 'hal-system-storage-unmount', 'hal-system-storag
e-eject'} (string list)
  org.freedesktop.Hal.Device.Volume.method_signatures = {'ssas', 'as', 'as'} 
(string list)
  org.freedesktop.Hal.Device.Volume.method_names = 
{'Mount', 'Unmount', 'Eject'} (string list)
  info.interfaces = {'org.freedesktop.Hal.Device.Volume'} (string list)
  volume.ignore = false  (bool)
  info.udi = '/org/freedesktop/Hal/devices/volume_label_DVD_RAM'  (string)
  info.product = 'DVD-RAM'  (string)
  volume.disc.capacity = 4580769792  (0x111090000)  (uint64)
  volume.disc.is_svcd = false  (bool)
  volume.disc.is_vcd = false  (bool)
  volume.disc.is_videodvd = false  (bool)
  volume.disc.is_rewritable = true  (bool)
  volume.disc.is_appendable = false  (bool)
  volume.disc.is_blank = false  (bool)
  volume.disc.has_data = true  (bool)
  volume.disc.has_audio = false  (bool)
  volume.disc.type = 'dvd_ram'  (string)
  volume.size = 4294965248  (0xfffff800)  (uint64)
  volume.num_blocks = 8946816  (0x888480)  (int)
  volume.block_size = 2048  (0x800)  (int)
  info.capabilities = {'volume', 'block'} (string list)
  info.category = 'volume'  (string)
  volume.is_partition = true  (bool)
  volume.is_disc = true  (bool)
  volume.is_mounted = true  (bool)
  volume.mount_point = '/media/DVD-RAM'  (string)
  volume.label = 'DVD-RAM'  (string)
  volume.uuid = ''  (string)
  volume.fsversion = ''  (string)
  volume.fsusage = 'filesystem'  (string)
  volume.fstype = 'udf'  (string)
  storage.model = ''  (string)
  block.storage_device 
= '/org/freedesktop/Hal/devices/storage_model_PIONEER_DVD_RW_DVR_111'  
(string)
  block.is_volume = true  (bool)
  block.minor = 64  (0x40)  (int)
  block.major = 22  (0x16)  (int)
  block.device = '/dev/hdd'  (string)
  linux.hotplug_type = 3  (0x3)  (int)
  info.parent 
= '/org/freedesktop/Hal/devices/storage_model_PIONEER_DVD_RW_DVR_111'  
(string)
  linux.sysfs_path_device = '/sys/block/hdd/fakevolume'  (string)
  linux.sysfs_path = '/sys/block/hdd/fakevolume'  (string)


Can you help me please. 

Thanks Frank