Comment 5 for bug 1879305

This works if one enables the s390x devices in the early-command section.
I tried it with the latest subiquity 20.06.1:
https://github.com/CanonicalLtd/subiquity/releases/tag/20.06.1

One either needs to make sure that the installer get's updated to at least 20.06.1 (or latest) or
a current daily live image can be used instead:
http://cdimage.ubuntu.com/ubuntu-server/daily-live/current/

Sample snippet:
  early-commands:
    - chzdev zfcp -e e000
    - chzdev zfcp -e e100
    - chzdev zfcp-lun -e --online
    - chzdev -e dasd 162a

Closing this for now (project-wise).