Description of problem:
fedora-Live-Worksatation-x86_64-rawhide-20140616  (virtualBox 1 cpu 1024) at formatting after install chosen.
will test with 2 cpu's next

Version-Release number of selected component:
anaconda-core-21.42-1.fc21.x86_64

The following was filed automatically by anaconda:
anaconda 21.42-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/blivet/formats/__init__.py", line 392, in create
    raise FormatCreateError("invalid device specification", self.device)
  File "/usr/lib/python2.7/site-packages/blivet/formats/fs.py", line 810, in create
    DeviceFormat.create(self, **kwargs)
  File "/usr/lib/python2.7/site-packages/blivet/deviceaction.py", line 554, in execute
    options=self.device.formatArgs)
  File "/usr/lib/python2.7/site-packages/blivet/devicetree.py", line 355, in processActions
    action.execute()
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 356, in doIt
    self.devicetree.processActions()
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 215, in turnOnFilesystems
    storage.doIt()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/install.py", line 179, in doInstall
    turnOnFilesystems(storage, mountOnly=flags.flags.dirInstall)
  File "/usr/lib64/python2.7/threading.py", line 766, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 227, in run
    threading.Thread.run(self, *args, **kwargs)
FormatCreateError: ('invalid device specification', '/dev/sda1')

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda --liveinst --method=livecd:///dev/mapper/live-base
cmdline_file:   BOOT_IMAGE=vmlinuz0 initrd=initrd0.img root=live:CDLABEL=Fedora-Live-Workstation-x86_64-r rootfstype=auto ro rd.live.image quiet  rhgb rd.luks=0 rd.md=0 rd.dm=0 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.16.0-0.rc0.git11.1.fc21.x86_64
other involved packages: python-blivet-0.56-1.fc21.noarch, python-libs-2.7.7-2.fc21.x86_64
product:        Fedora
release:        Fedora release 21 (Rawhide)
type:           anaconda
version:        rawhide