> 3. Pages with checksums set need to have a version marking to show
> that they are a later version of the page layout. That version number
> needs to be extensible to many later versions. Pages of multiple
> versions need to exist within the server to allow simple upgrades and
> migration.
This is a statement of a problem; do you have a proposed solution for it?
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com