Description of problem:
On system with two hard disks tried to install with kickstart (install / to logical volume on raw device)

Version-Release number of selected component:
anaconda-19.31.34-1

The following was filed automatically by anaconda:
anaconda 19.31.34-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/blivet/devices.py", line 2410, in size
    size += max(0, self.align(pv.size - pv.format.peStart))
  File "/usr/lib/python2.7/site-packages/blivet/devices.py", line 514, in __str__
    s = "%s %dMB %s" % (exist, self.size, super(StorageDevice, self).__str__())
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 2107, in getDeviceByName
    log_method_return(self, str(found))
  File "/usr/lib64/python2.7/site-packages/pyanaconda/kickstart.py", line 709, in execute
    vg = devicetree.getDeviceByName(vgname)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/kickstart.py", line 673, in execute
    l.execute(storage, ksdata, instClass)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/kickstart.py", line 1735, in doKickstartStorage
    ksdata.logvol.execute(storage, ksdata, instClass)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/storage.py", line 402, in _doExecute
    doKickstartStorage(self.storage, self.data, self.instclass)
  File "/usr/lib64/python2.7/threading.py", line 764, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 168, in run
    threading.Thread.run(self, *args, **kwargs)
AttributeError: 'DiskLabel' object has no attribute 'peStart'

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   initrd=initrd.img inst.stage2=hd:LABEL=RHEL-7.0\x20x86_64 quiet ks=http://file.brq.redhat.com/~pkotvan/ks/raw-lvm BOOT_IMAGE=vmlinuz 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.10.0-50.el7.x86_64
product:        Red Hat Enterprise Linux
release:        Red Hat Enterprise Linux Server release 7.0 Beta (Maipo)
type:           anaconda
version:        7.0