Description of problem:

anaconda 17.27 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/site-packages/pyanaconda/storage/devices.py", line 796, in create
    raise DeviceCreateError(str(e), self.name)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/storage/deviceaction.py", line 241, in execute
    self.device.create(intf=intf)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/storage/devicetree.py", line 320, in processActions
    action.execute(intf=self.intf)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/storage/__init__.py", line 375, in doIt
    self.devicetree.processActions()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/packages.py", line 122, in turnOnFilesystems
    anaconda.storage.doIt()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/dispatch.py", line 383, in dispatch
    self.dir = self.steps[self.step].target(self.anaconda)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/gui.py", line 88, in return_false
    func(*args, **kwargs)
DeviceCreateError: ('Unknown option RAID0\nusage: mkfs.btrfs [options] dev [ dev ... ]\noptions:\n\t -A --alloc-start the offset to start the FS\n\t -b --byte-count total number of bytes in the FS\n\t -d --data data profile, raid0, raid1, raid10 or single\n\t -l --leafsize size of btree leaves\n\t -L --label set a label\n\t -m --metadata metadata profile, values like data profile\n\t -M --mixed mix metadata and data together\n\t -n --nodesize size of btree nodes\n\t -s --sectorsize min block allocation\n\t -r --rootdir the source directory\nBtrfs Btrfs v0.19\n', 'f17')

Kickstart used for the installation:
install
lang en_US.UTF-8
keyboard us
network --onboot yes --device eth0 --bootproto dhcp --noipv6
timezone --utc America/New_York
rootpw  redhat
selinux --enforcing
authconfig --enableshadow --passalgo=sha512
firewall --service=ssh

clearpart --linux --drives=sda
ignoredisk --only-use=sda
bootloader --location=mbr --timeout=5

part btrfs.01 --grow --size=500
btrfs none --data=0 --label=f17 btrfs.01
btrfs / --subvol --name=root f17
btrfs /home --subvol --name=home f17
part biosboot --fstype=biosboot --size=1
part swap --size=512
part /boot --fstype=ext4 --size=500

%packages
@core
%end


Version-Release number of selected component (if applicable):
anaconda-17.27

How reproducible:
always

Steps to Reproduce:
1. install system using provided kickstart
  
Actual results:
anaconda traceback

Expected results:
successful installation

Additional info:
installation finishes successfully without the "--data=0" btrfs option in kickstart