Description of problem:
Start with broken lvm partition. 

Version-Release number of selected component:
system-config-lvm-1.1.18-1.fc19

Additional info:
reporter:       libreport-2.1.8
cmdline:        /usr/bin/python2 /usr/share/system-config-lvm/system-config-lvm.py
executable:     /usr/share/system-config-lvm/system-config-lvm.py
kernel:         3.11.0-300.fc20.x86_64
runlevel:       N 5
type:           Python
uid:            0

Truncated backtrace:
PhysicalVolume.py:135:setPartition:TypeError: 'NoneType' object is not iterable

Traceback (most recent call last):
  File "/usr/share/system-config-lvm/system-config-lvm.py", line 172, in <module>
    runFullGUI()
  File "/usr/share/system-config-lvm/system-config-lvm.py", line 157, in runFullGUI
    blvm = baselvm(glade_xml, app)
  File "/usr/share/system-config-lvm/system-config-lvm.py", line 105, in __init__
    self.volume_tab_view = Volume_Tab_View(glade_xml, self.lvmm, self.main_win)
  File "/usr/share/system-config-lvm/Volume_Tab_View.py", line 136, in __init__
    self.prepare_tree()
  File "/usr/share/system-config-lvm/Volume_Tab_View.py", line 225, in prepare_tree
    self.model_factory.reload()
  File "/usr/share/system-config-lvm/lvm_model.py", line 165, in reload
    self.__PVs = self.__query_partitions()
  File "/usr/share/system-config-lvm/lvm_model.py", line 276, in __query_partitions
    pv.setPartition(old_pv.getPartition())
  File "/usr/share/system-config-lvm/PhysicalVolume.py", line 135, in setPartition
    def setPartition(self, (devname, part)):
TypeError: 'NoneType' object is not iterable

Local variables in innermost frame:
.1: None
self: <PhysicalVolume.PhysicalVolume instance at 0x22a9f80>