current xen-unstable fails to xm start <name>

[Olaf Hering <olaf@aepfle.de>]

Hello,

current xen-unstable.hg-4.1.22019 fails to run 'xm start <name>', while
xen-unstable.hg-4.1.21976 was still ok.
Its not obvious from browsing the diff between the two trees whats the cause.
Any other info required besides the one pasted below?

# xm start $name
Error: 
Usage: xm start <DomainName>

Start a Xend managed domain
  -p, --paused                   Do not unpause domain after starting it    
  -c, --console_autoconnect      Connect to the console after the domain    
                                 is created
  --vncviewer                    Connect to display via VNC after the       
                                 domain is created
  --vncviewer-autopass           Pass VNC password to viewer via stdin and  
                                 -autopass


/var/log/xen/xend.log shows this. 
[2010-08-23 23:05:10 4672] DEBUG (XendDomainInfo:2498) XendDomainInfo.constructDomain
[2010-08-23 23:05:10 4672] DEBUG (balloon:187) Balloon: 153020 KiB free; need 16384; done.
[2010-08-23 23:05:10 4672] ERROR (XendDomainInfo:488) VM start failed
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line 473, in start
    XendTask.log_progress(0, 30, self._constructDomain)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line 2618, in _constructDomain
    assert type(weight) == int
AssertionError
[2010-08-23 23:05:10 4672] DEBUG (XendDomainInfo:3071) XendDomainInfo.destroy: domid=6
[2010-08-23 23:05:10 4672] DEBUG (XendDomainInfo:2406) No device model
[2010-08-23 23:05:10 4672] DEBUG (XendDomainInfo:2408) Releasing devices
[2010-08-23 23:05:10 4672] ERROR (xmlrpclib2:178) Internal error handling xend.domain.start
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/xen/util/xmlrpclib2.py", line 131, in _marshaled_dispatch
    response = self._dispatch(method, params)
  File "/usr/lib64/python2.6/SimpleXMLRPCServer.py", line 418, in _dispatch
    return func(*params)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomain.py", line 1070, in domain_start
    dominfo.start(is_managed = True)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line 473, in start
    XendTask.log_progress(0, 30, self._constructDomain)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line 2618, in _constructDomain
    assert type(weight) == int
AssertionError

Olaf