Kb174

Emulab FAQ: Testbed Operations: What does "invalid migration assumptions" mean from "assign"?

> Assign seems to be complaining about an internal error:
>
>     Reverting to best solution
>     Done
> >>  Internal error: Invalid migration assumptions.
>     score:163.44 absbest:164.04 violated:19 absbestviolated:21
>
> I haven't a clue what that means...

Basically it means that when assign tried to go back to the best solution it had found, it gets a different score.

I do know what causes this, and it's fixable, but with quite a lot of work.

It's actually not really a problem - the only case in which it gives a false negative answer is if the absbestviolated score is 0, and the violated score is non-zero.