Re: GSoC proposal - "make an unlogged table logged"

Fabrízio de Royes Mello <fabriziomello@gmail.com> writes:
> Do you think is difficult to implement "ALTER TABLE ... SET UNLOGGED" too?
> Thinking in a scope of one GSoC, of course.

I think it's basically the same thing.  You might hope to optimize it;
but you have to create (rather than remove) an init fork, and there's
no way to do that in exact sync with the commit.  So for safety I think
you have to copy the data into a new relfilenode.
        regards, tom lane