Created attachment 504983 [details]
vdsm log

Description of problem:

in case libvirtd is non-responsive restarting libvirtd will triger vdsm prepareForShutdown which will hang forever on:

Thread-264::ERROR::2011-06-16 09:37:43,020::clientIF::63::vds::(wrapper) Traceback (most recent call last):
  File "/usr/share/vdsm/clientIF.py", line 59, in wrapper
    res = f(*args, **kwargs)
  File "/usr/share/vdsm/clientIF.py", line 892, in getVdsCapabilities
    self.machineCapabilities = self._getCapabilities()
  File "/usr/share/vdsm/clientIF.py", line 862, in _getCapabilities
    ',' + ','.join(getCompatibleCpuModels())
  File "/usr/share/vdsm/clientIF.py", line 823, in getCompatibleCpuModels
    in allModels if compatible(model) ]
  File "/usr/share/vdsm/clientIF.py", line 819, in compatible
    return c.compareCPU(xml, 0) in (
  File "/usr/share/vdsm/libvirtconnection.py", line 59, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1446, in compareCPU
    if ret == -1: raise libvirtError ('virConnectCompareCPU() failed', conn=self)
libvirtError: cannot recv data: : Connection reset by peer

(END) 

Version-Release number of selected component (if applicable):
libvirt-0.9.1-1.el6.x86_64
vdsm-4.9-75.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
on a host connected to storage pool and have no vms running do:
  1  kill -19 `pgrep libvirt`
  2  vdsClient -s 0 getVdsCaps &
  3  /etc/init.d/libvirtd restart

Additional info:
*vdsm log attached