Greetings,
* Dave Cramer (davecramer@postgres.rocks) wrote:
> One thing I can think of is upgrading. AFAIK dump and restore is the only
> way to change the on disk format.
> Presuming that eventually we will be forced to change the on disk format it
> would be nice to be able to do so in a manner which does not force long
> down times
There is an ongoing effort moving in this direction. The $subject isn't
great, but this patch set (which we are currently working on
updating...): https://commitfest.postgresql.org/43/3986/ attempts
changing a lot of currently compile-time block-size pieces to be
run-time which would open up the possibility to have a different page
format for, eg, different tablespaces. Possibly even different block
sizes. We'd certainly welcome discussion from others who are
interested.
Thanks,
Stephen