Description of problem:
installing F-30 on 4 out of 5 dasds

Version-Release number of selected component:
anaconda-30.25.1

The following was filed automatically by anaconda:
anaconda 30.25.1 exception report
Traceback (most recent call first):
  File "/usr/lib/python3.7/site-packages/pydbus/auto_names.py", line 18, in auto_object_path
    if object_path[0] != "/":
  File "/usr/lib/python3.7/site-packages/pydbus/proxy.py", line 42, in get
    object_path = auto_object_path(bus_name, object_path)
  File "/usr/lib64/python3.7/site-packages/pyanaconda/dbus/connection.py", line 120, in get_proxy
    return self.connection.get(service_name, object_path)
  File "/usr/lib64/python3.7/site-packages/pyanaconda/dbus/identifier.py", line 163, in get_proxy
    return self._message_bus.get_proxy(self.service_name, object_path)
  File "/usr/lib64/python3.7/site-packages/pyanaconda/storage/installation.py", line 124, in write_storage_configuration
    zfcp_proxy = STORAGE.get_proxy(ZFCP)
  File "/usr/lib64/python3.7/site-packages/pyanaconda/installation_tasks.py", line 438, in run_task
    self._task(*self._task_args, **self._task_kwargs)
  File "/usr/lib64/python3.7/site-packages/pyanaconda/installation_tasks.py", line 472, in start
    self.run_task()
  File "/usr/lib64/python3.7/site-packages/pyanaconda/installation_tasks.py", line 304, in start
    item.start()
  File "/usr/lib64/python3.7/site-packages/pyanaconda/installation_tasks.py", line 304, in start
    item.start()
  File "/usr/lib64/python3.7/site-packages/pyanaconda/installation.py", line 399, in doInstall
    installation_queue.start()
  File "/usr/lib64/python3.7/threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.7/site-packages/pyanaconda/threading.py", line 280, in run
    threading.Thread.run(self)
TypeError: 'type' object is not subscriptable

Additional info:
addons:         com_redhat_kdump
blivet-gui-utils.log: 
cmdline:        /usr/bin/python3  /sbin/anaconda
cmdline_file:   repo=https://kojipkgs.fedoraproject.org/compose/branched/latest-Fedora-30/compose/Everything/s390x/os/ vnc lang=en_US.UTF-8 keymap=us ro ramdisk_size=40000 cio_ignore=all,!condev rd.dasd=0.0.0200 rd.dasd=0.0.0201 rd.dasd=0.0.0202 rd.dasd=0.0.0203 rd.dasd=0.0.0204 rd.znet=qeth,0.0.0800,0.0.0801,0.0.0802,layer2=0,portno=0 ip=10.16.104.70::10.16.111.254:21:devel7.s390.bos.redhat.com:enc800:none nameserver=10.11.5.19 BOOT_IMAGE=0
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         5.0.0-0.rc8.git0.1.fc30.s390x
product:        Fedora
release:        Fedora release 30 (Thirty)
release_type:   pre-release
type:           anaconda
version:        30