virsh shutdown does not shutdown a kvm guest

Issue

Executing "virsh sutdown <guestid>" command does not have any effect. The guest system will keep running.

Guest system has below configuration.

<domain type='kvm' id='19'> 
  <name>vlcst013</name> 
  <uuid>4e818427-bb0a-f957-77dd-7c1d700ed769</uuid> 
  <memory>2097152</memory> 
  <currentMemory>2097152</currentMemory> 
  <vcpu>1</vcpu> 
  <os> 
    <type arch='x86_64' machine='pc'>hvm</type> 
    <boot dev='hd'/> 
  </os> 
  <features> 
    <pae/> 
  </features> 
  <clock offset='utc'/> 
  <on_poweroff>destroy</on_poweroff> 
  <on_reboot>restart</on_reboot> 
  <on_crash>restart</on_crash> 
  <devices> 
    <emulator>/usr/libexec/qemu-kvm</emulator> 
    <disk type='file' device='disk'> 
      <source file='/apps/kvm/guestname.img'/> 
      <target dev='hda' bus='ide'/> 
    </disk> 
    <disk type='file' device='cdrom'> 
      <target dev='hdc' bus='ide'/> 
      <readonly/> 
    </disk> 
    <interface type='bridge'> 
      <mac address='54:52:00:49:64:61'/> 
      <source bridge='br0'/> 
      <target dev='vnet0'/> 
    </interface> 
    <interface type='bridge'> 
      <mac address='54:52:00:62:c7:37'/> 
      <source bridge='br2'/> 
      <target dev='vnet1'/> 
    </interface> 
    <interface type='bridge'> 
      <mac address='54:52:00:5c:41:60'/> 
      <source bridge='br1'/> 
      <target dev='vnet2'/> 
    </interface> 
    <serial type='pty'> 
      <source path='/dev/pts/2'/> 
      <target port='0'/> 
    </serial> 
    <console type='pty' tty='/dev/pts/2'> 
      <source path='/dev/pts/2'/> 
      <target port='0'/> 
    </console> 
  </devices> 
</domain>