Andres Freund <andres(at)anarazel(dot)de> writes:
> I think you misunderstand my point - I'm saying that pg_resetxlog should
> be able to force the use of older checkpoints, basically as a fallback
> to cases where the previous approach might actually have worked, not
> that it needs to work across format changes.
That seems like a completely separate feature --- and one of dubious
value, frankly. The further back you go, the less likely it'd be
to work.
regards, tom lane