Bug 873486

Description of problem:
Rebooted in the middle of a kickstart lvm on raid install, array was in the middle of resyncing.
Did a non-ks install, entered the custom spoke and got this TB immediately.


Version-Release number of selected component:
anaconda-18.24

Additional info:
libreport version: 2.0.17
cmdline:        /usr/bin/python  /sbin/anaconda
kernel:         3.6.5-2.fc18.x86_64

description:
:The following was filed automatically by anaconda:
:anaconda 18.24 exception report
:Traceback (most recent call first):
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/storage/devicelibs/mdraid.py", line 146, in get_member_space
:    % (level, min_members))
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/storage/__init__.py", line 3352, in device_size
:    level=self.raid_level)
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1438, in _populate_raid
:    base_size = factory.device_size
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1650, in _populate_right_side
:    self._populate_raid(raid_level, device.size)
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1956, in on_selector_clicked
:    self._populate_right_side(selector)
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1820, in _show_first_mountpoint
:    self.on_selector_clicked(page._members[0])
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1974, in on_page_clicked
:    self._show_first_mountpoint(page=page)
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/lib/accordion.py", line 119, in _onExpanded
:    cb(obj.get_child())
:MDRaidError: raid0 requires at least 2 disks