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Description of problem:
This happend when I was asked to reclaim space. I removed all the partitions and hit next.

Version-Release number of selected component:
anaconda-18.12

Additional info:
libreport version: 2.0.14
cmdline:        /usr/bin/python  /sbin/anaconda
kernel:         3.6.0-0.28.el7.ppc64

description:
:The following was filed automatically by anaconda:
:anaconda 18.12 exception report
:Traceback (most recent call first):
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/storage/devicetree.py", line 375, in _removeDevice
:    raise ValueError("Cannot remove non-leaf device '%s'" % dev.name)
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/storage/devicetree.py", line 425, in registerAction
:    self._removeDevice(action.device)
:  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/lib/resize.py", line 223, in _scheduleActions
:    self.storage.devicetree.registerAction(ActionDestroyDevice(device))
:ValueError: Cannot remove non-leaf device 'sda3'

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