mlw <markw(at)mohawksoft(dot)com> writes:
> but I'd like to make a general call to arms that this (or 7.3) should be the
> last release to require this.
We will never make such a commitment, at least not in the foreseeable
future.
I would like to see more attention paid to supporting cross-version
upgrades via pg_upgrade (or some improved version thereof) when
practical, which it should be more often than not. But to bind
ourselves forever to the current on-disk format is sheer folly.
And if you have to convert the datafile format then you might as
well dump and reload.
regards, tom lane