peapp final update error

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Hello

I am trying to do an update from RHEL 7.6 to RHEL 8 with peapp over Virtual Box.
These are the steps I did:

  1. Download RHEL 7.6 ISO (4GB)
  2. Create VM with 8GB Disk, 2vCPU and 4GB RAM and PCNet NIC
  3. Mount ISO and start installation
  4. Register and attach to my RHSM account over subscription-manager
  5. Follow the instructions from https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/upgrading_to_rhel_8/index

Everything works fine until the final reboot on chapter 4 step 2. On the upgrade phase it exits on spawning the sysroot container on /sysroot and it falls into emergency mode
sysroot_err

Doing an exit on the shell restarts the update hook and then if fails with an import error about the pyudev module
pyudev_err

When rebooting completely GRUB shows already RHEL8 kernel and I am able to boot it and I get a console login prompt. But when logging in correctly, it immediately kicks me out of the shell and gets back to the login prompt.

Anyone ever tried upgrading RHEL 7.6 to RHEL8 with my VM settings over VirtualBox and succeeded?

RH

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