Description of problem:
Reproducing problem
--------------------------
1. Install Fedora 25, ppc64le nightly compose using ISO available at http://ppc.koji.fedoraproject.org/compose/branched/Fedora-25-20160907.n.0/compose/Server/ppc64le/iso/ or from any previous nightly compose
2. During SELECTION INSTALLATION stepinstallation, in Encryption section select(tick) Encrypt my data
3. Enter passphrase when asked and then Begin installation
4. Installation will stop in between during creating lvmpv on /dev/mapper/luks-*

Version-Release number of selected component:
anaconda-25.20-1

The following was filed automatically by anaconda:
anaconda 25.20-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python3.5/site-packages/gi/overrides/BlockDev.py", line 441, in wrapped
    raise transform[1](msg)
  File "/usr/lib/python3.5/site-packages/blivet/devices/lvm.py", line 237, in _create
    blockdev.lvm.vgcreate(self.name, pv_list, self.pe_size)
  File "/usr/lib/python3.5/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.5/site-packages/blivet/devices/storage.py", line 443, in create
    self._create()
  File "/usr/lib/python3.5/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.5/site-packages/blivet/deviceaction.py", line 318, in execute
    self.device.create()
  File "/usr/lib/python3.5/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.5/site-packages/blivet/actionlist.py", line 322, in process
    action.execute(callbacks)
  File "/usr/lib/python3.5/site-packages/blivet/actionlist.py", line 48, in wrapped_func
    return func(obj, *args, **kwargs)
  File "/usr/lib/python3.5/site-packages/blivet/blivet.py", line 163, in do_it
    self.devicetree.actions.process(callbacks=callbacks, devices=self.devices)
  File "/usr/lib/python3.5/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.5/site-packages/blivet/osinstall.py", line 1112, in turn_on_filesystems
    storage.do_it(callbacks)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/install.py", line 200, in doInstall
    turn_on_filesystems(storage, mount_only=flags.flags.dirInstall, callbacks=callbacks_reg)
  File "/usr/lib64/python3.5/threading.py", line 862, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/threads.py", line 251, in run
    threading.Thread.run(self, *args, **kwargs)
gi.overrides.BlockDev.LVMError: Failed to call the 'VgCreate' method on the '/com/redhat/lvmdbus1/Manager' object: GDBus.Error:org.freedesktop.DBus.Python.dbus.exceptions.DBusException: ('com.redhat.lvmdbus1.Manager', 'Exit code 5, stderr =   Aborting vg_write: No metadata areas to write to!\n')

Additional info:
addons:         com_redhat_docker, com_redhat_kdump
cmdline:        /usr/bin/python3  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=/ppc/ppc64/vmlinuz ro
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.8.0-0.rc4.git0.1.fc25.ppc64le
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        25