On 2015-12-09 16:30:47 +0900, Michael Paquier wrote:
> > I'm kinda wondering if it wouldn't have been better to go through shared
> > buffers in ResetUnloggedRelationsInDbspaceDir() instead of using
> > copy_file().
>
> For deployment with large shared_buffers settings, wouldn't that be
> actually more costly than the current way of doing? We would need to
> go through all the buffers at least once and look for the INIT_FORKNUM
> present to flush them.
We could just check the file sizes on disk, and the check for the
contents of all the pages for each file.