Created attachment 1777587 [details]
/var/log

Description of problem:
Active service rdma.service becomes "Unit rdma.service could not be found" after RHVH upgrade.

Version-Release number of selected component (if applicable):
RHVM: 4.4.6.5-0.17.el8ev
RHVH: redhat-virtualization-host-4.4.6-20210426.0.el8_4

How reproducible:
100%

Steps to Reproduce:
1. Install RHVH-4.4-20210331.0-RHVH-x86_64-dvd1.iso
2. Add host to RHVM
3. Login to host, setup local repos and point to "redhat-virtualization-host-4.4.6-20210426.0.el8_4"
4. Check rdma.service 
   # systemctl status rdma.service
5. Upgrade the host via RHVM
6. Check rdma.service again after upgrade
   # systemctl status rdma.service


Actual results:
rdma.service is active on rhvh-4.4.5.4-0.20210330.0+1, but after upgrade, it becomes "Unit rdma.service could not be found."

Expected results:
The active services are still active after upgrade


Additional info:
Before upgrade:
~~~~~~
# imgbase w
You are on rhvh-4.4.5.4-0.20210330.0+1

# imgbase layout
rhvh-4.4.5.4-0.20210330.0
 +- rhvh-4.4.5.4-0.20210330.0+1

# systemctl status rdma.service
● rdma.service - Initialize the iWARP/InfiniBand/RDMA stack in the kernel
   Loaded: loaded (/usr/lib/systemd/system/rdma.service; enabled; vendor preset: disabled)
   Active: active (exited) since Fri 2021-04-30 03:04:29 EDT; 3h 58min left
     Docs: file:/etc/rdma/rdma.conf
  Process: 1197 ExecStart=/usr/libexec/rdma-init-kernel (code=exited, status=0/SUCCESS)
 Main PID: 1197 (code=exited, status=0/SUCCESS)
    Tasks: 0 (limit: 203464)
   Memory: 0B
   CGroup: /system.slice/rdma.service

Apr 30 03:04:29 localhost.localdomain systemd[1]: Started Initialize the iWARP/InfiniBand/RDMA stack in the kernel.
~~~~~~


After upgrade:
~~~~~~
imgbase w
You are on rhvh-4.4.6.1-0.20210426.0+1

# imgbase layout
rhvh-4.4.5.4-0.20210330.0
 +- rhvh-4.4.5.4-0.20210330.0+1
rhvh-4.4.6.1-0.20210426.0
 +- rhvh-4.4.6.1-0.20210426.0+1

# systemctl status rdma.service
Unit rdma.service could not be found.
~~~~~~