Created attachment 738937 [details]
vdsm.log of both hosts

Description of problem:
During migration of a VM is see tracebacks in vdsm.log on both servers. The migration itself is successful and the VM is OK after migration.

On source:

VM Channels Listener::ERROR::2013-04-23 13:22:57,891::vmChannels::53::vds::(_handle_event) Received EPOLLHUP on fileno 20
...snip...n
Thread-51854::ERROR::2013-04-23 13:22:58,088::libvirtconnection::106::vds::(wrapper) Unknown libvirterror: ecode: 42 edom: 10
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py", line 83, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1873, in jobInfo
    if ret is None: raise libvirtError ('virDomainGetJobInfo() failed', dom=self)
libvirtError: Domain not found: no domain with matching uuid 'dbe0b0d8-6d1f-4039-abb2-c25be65539ed'
Thread-51852::ERROR::2013-04-23 13:22:58,093::libvirtconnection::106::vds::(wrapper) Unknown libvirterror: ecode: 42 edom: 10
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py", line 83, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 381, in XMLDesc
    if ret is None: raise libvirtError ('virDomainGetXMLDesc() failed', dom=self)
libvirtError: Domain not found: no domain with matching uuid 'dbe0b0d8-6d1f-4039-abb2-c25be65539ed'


On destination:

libvirtEventLoop::ERROR::2013-04-23 13:22:31,708::libvirtconnection::70::vds::(__eventCallback) Error running VM callback
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py", line 63, in __eventCallback
    v.onDisconnect()
  File "/usr/share/vdsm/vm.py", line 790, in onDisconnect
    self.guestAgent.desktopLock()
AttributeError: 'NoneType' object has no attribute 'desktopLock'


Version-Release number of selected component (if applicable):
libvirt-0.10.2-18.el6_4.3.x86_64
vdsm-4.10.2-1.10.el6ev.x86_64 /for 3.1/
qemu-kvm-rhev-0.12.1.2-2.355.el6_4.2.x86_64

How reproducible:
100%

Steps to Reproduce:
1. have hosts with above versions
2. do live migration and check vdsm.log
3.
  
Actual results:
errors/tracebacks

Expected results:
?

Additional info: