Description of problem:
do a f26 installation using virt-manager;
try to do a f27 installation on that virt-machine with /home shrinked,
continue the installation,the crash occurs while I'm typing the password

Version-Release number of selected component:
anaconda-27.20-1

The following was filed automatically by anaconda:
anaconda 27.20-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python3.6/site-packages/blivet/formats/__init__.py", line 478, in do_resize
    raise FSResizeError(e, self.device)
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/deviceaction.py", line 816, in execute
    self.device.format.do_resize()
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/actionlist.py", line 325, in process
    action.execute(callbacks)
  File "/usr/lib/python3.6/site-packages/blivet/actionlist.py", line 48, in wrapped_func
    return func(obj, *args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/blivet.py", line 163, in do_it
    self.devicetree.actions.process(callbacks=callbacks, devices=self.devices)
  File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 45, in run_with_lock
    return m(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/blivet/osinstall.py", line 1112, in turn_on_filesystems
    storage.do_it(callbacks)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/installation_tasks.py", line 438, in run_task
    self._task(*self._task_args, **self._task_kwargs)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/installation_tasks.py", line 472, in start
    self.run_task()
  File "/usr/lib64/python3.6/site-packages/pyanaconda/installation_tasks.py", line 304, in start
    item.start()
  File "/usr/lib64/python3.6/site-packages/pyanaconda/installation_tasks.py", line 304, in start
    item.start()
  File "/usr/lib64/python3.6/site-packages/pyanaconda/installation.py", line 365, in doInstall
    installation_queue.start()
  File "/usr/lib64/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/threading.py", line 252, in run
    threading.Thread.run(self)
blivet.errors.FSResizeError: resize failed: 1

Additional info:
addons:         com_redhat_kdump, com_redhat_docker
cmdline:        /usr/libexec/system-python  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=Fedora-S-dvd-x86_64-27 rd.live.check quiet
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.13.0-0.rc7.git0.1.fc27.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        27