VDSM: 'Running'/'Paused' VMs failed to recover after vdsmd service restart when OS_Name='UNKNOWN'.

Description: 
*************
- VDSM restart itself when SPM loses connection from master storage domain,  
- In case 'there's a problem' with redhat-release and OSNAME is not RHEL or RHEV, running VMs which displayed in 'virsh -r list' will fail to recover on vdsm side after vdsmd service restart. and there will be no way to re-initiate them. 

Note:
******
I had a problem with two instance of redhat-release-server which caused the OSNAME to return 'UNKNOWN'.

[root@red-vds3 /]# virsh -r list
 Id Name                 State
----------------------------------
  1 basic_xp             paused
  2 igor_test            running


[root@red-vds3 /]# vdsClient -s 0 list  
{RETURNS EMPTY ... }


VDSM.log:

When attempting to re-initiate the VM's from within RHEVM GUI the operation failed: 
*****************************************************************************


        </features>
        <cpu match="exact">
                <model>Conroe</model>
                <topology cores="1" sockets="1" threads="1"/>
        </cpu>
</domain>

Thread-198::DEBUG::2011-06-26 16:07:10,959::vm::359::vm.Vm::(_startUnderlyingVm) vmId=`6028cc60-341a-4dd9-910c-85e804bc9d35`:
:_ongoingCreations released
Thread-198::INFO::2011-06-26 16:07:10,959::vm::383::vm.Vm::(_startUnderlyingVm) vmId=`6028cc60-341a-4dd9-910c-85e804bc9d35`::
The vm start process failed
Traceback (most recent call last):
  File "/usr/share/vdsm/vm.py", line 349, in _startUnderlyingVm
    self._run()
  File "/usr/share/vdsm/libvirtvm.py", line 939, in _run
    self._connection.createXML(domxml, flags),
  File "/usr/share/vdsm/libvirtconnection.py", line 59, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1353, in createXML
    if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self)
libvirtError: Requested operation is not valid: domain is already active as 'igor_test'
Thread-198::DEBUG::2011-06-26 16:07:10,964::vm::777::vm.Vm::(setDownStatus) vmId=`6028cc60-341a-4dd9-910c-85e804bc9d35`::Chan
ged state to Down: Requested operation is not valid: domain is already active as 'igor_test'
Thread-201::DEBUG::2011-06-26 16:07:11,148::clientIF::55::vds::(wrapper) [10.35.64.12]::call getVmStats with ('6028cc60-341a-
4dd9-910c-85e804bc9d35',) {}