Created attachment 1546656 [details]
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Description of problem:
Putting multiple hosts into maintenance mode leads to a 'Invalid Status on Data Center' creating an infinite loop of attempt to put into maintenance mode.

using a python script to test if hosts can enter maintenance mode using ovirtsdk4:
I put one host into maintenance mode and this worked fine. Immediately afterword I put a second host into maintenance mode and it never completed. After a certain amount of time rhv attempts to put the same host into maintenance mode again. This continues to happen without reporting a failure. The running tasks at the top right of the UI will show all these running the highest I have seen was when it happened overnight and there was about 100 taks currently running all attempting the same thing, to put the same host into maintenance, without any of them reporting a failure.

Version-Release number of selected component (if applicable):
4.2.8.5

How reproducible:
Most of the time.

Steps to Reproduce:
1.Put one host into maintenance mode
2.Wait for hosted engine vm to migrate to another host
3.Then put that host into maintenance mode.

Actual results:
The second host never gets put into maintenance mode, and rhv continues to create new tasks to accomplish this without stopping or report a failure of the previous one


Expected results:
The second host should be able to get put into maintenance mode.
or
If there is an issue like we can see with 'Invalid Status on Data Center Default' this should lead to a failure of the maintenance task. Instead of creating more new tasks that run indefinitely.

Additional info:
I have included some screen shots for more context.

I have additional screenshots and sos reports if needed.