Description of problem:
Did the PartitioningEcryptAll testcase for the Blivet GUI test day.

Layout (IIRC):

/boot - unencrypted
/home - btrfs on LUKS
/ & swap - on LVM on LUKS

Version-Release number of selected component:
anaconda-26.21.1-1

The following was filed automatically by anaconda:
anaconda 26.21.1-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python3.6/site-packages/blivet/tasks/fsmount.py", line 125, in do_task
    raise FSError("mount failed: %s" % rc)
  File "/usr/lib/python3.6/site-packages/blivet/formats/fs.py", line 507, in _setup
    self._mount.do_task(chrooted_mountpoint, options=options)
  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/formats/__init__.py", line 602, in setup
    self._setup(**kwargs)
  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/devices/storage.py", line 506, in setup_parents
    _format.setup()
  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/devices/storage.py", line 438, in _pre_create
    self.setup_parents()
  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/devices/btrfs.py", line 408, in _pre_create
    super(BTRFSVolumeDevice, self)._pre_create()
  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/devices/storage.py", line 447, in create
    self._pre_create()
  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 318, in execute
    self.device.create()
  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/install_tasks.py", line 437, in run_task
    self._task(*self._task_args, **self._task_kwargs)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/install_tasks.py", line 471, in start
    self.run_task()
  File "/usr/lib64/python3.6/site-packages/pyanaconda/install_tasks.py", line 303, in start
    item.start()
  File "/usr/lib64/python3.6/site-packages/pyanaconda/install_tasks.py", line 303, in start
    item.start()
  File "/usr/lib64/python3.6/site-packages/pyanaconda/install.py", line 356, 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/threads.py", line 251, in run
    threading.Thread.run(self, *args, **kwargs)
blivet.errors.FSError: mount failed: 32

Additional info:
addons:         com_redhat_kdump, com_redhat_docker
cmdline:        /usr/libexec/system-python  /sbin/anaconda
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.11.0-0.rc4.git0.1.fc26.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        26