Description of problem:
Resume operation will destroy a guest sometimes.

Version-Release number of selected component (if applicable):
# rpm -q libvirt
libvirt-0.9.9-1.el6.x86_64

How reproducible:
it's not 100% reproducible.

Steps to Reproduce:

# virsh -c lxc:/// dumpxml toy
<domain type='lxc'>
  <name>toy</name>
  <uuid>d1f4798b-bebf-d93c-1d97-fe1c1cb7c780</uuid>
  <memory>500000</memory>
  <currentMemory>500000</currentMemory>
  <vcpu>1</vcpu>
  <os>
    <type arch='x86_64'>exe</type>
    <init>/bin/sh</init>
  </os>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/libexec/libvirt_lxc</emulator>
    <interface type='network'>
      <mac address='52:54:00:25:bf:e9'/>
      <source network='default'/>
    </interface>
    <console type='pty'>
      <target type='lxc' port='0'/>
    </console>
  </devices>
</domain>

# virsh -c lxc:/// list
 Id Name                 State
----------------------------------
9591 toy                  running

# virsh -c lxc:/// suspend toy
Domain toy suspended

# virsh -c lxc:/// list
 Id Name                 State
----------------------------------
9591 toy                  paused

# virsh -c lxc:/// resume toy
Domain toy resumed

# virsh -c lxc:/// list --all
 Id Name                 State
----------------------------------
  - toy                  shut off
  
Actual results:
the guest 'toy' hasn't recovered original 'running' state.

Expected results:
should recover original 'running' state

Additional info: