To Reproduce Steps to reproduce the behavior:

1. Complete OSP FFU from 16.2 to 17.1 on pre-provisioned cloud
2. Begin LEAPP upgrade
3. Hosts do not boot after LEAPP upgrade.

Expected behavior

• LEAPP upgrade should complete successfully and OSP17.1 cloud should end up on RHEL9.2.

Screenshots

• Attached Image

Device Info (please complete the following information):

• Hardware Specs: RHEL KVM and HP DL360g10+
• OS Version: RHEL8.4/kernel-4.18.0-305.154.1
•  

Bug impact

• User is unable to FFU pre-provisioned cloud from 16.2 to 17.1

Known workaround

Removing
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
from system_upgrade.yaml allows undercloud to boot successfully BUT does NOT work for physical computes.

Additional context

• User has pre-provisioned nodes on 16.2.5 and is attempting to FFU to 17.1.5.
• User has attempted to FFU to 17.1.3 and 17.1.4 previously but known issues relating to FFU+pre-provisioned nodes prevented this from being successful.  However, the same issue with the undercloud failing to boot took place in 17.1.4 as well.
• They have been trying to get this to work for several months and temperature is hot.