Re: SLRUs in the main buffer pool - Page Header definitions

"Bagga, Rishu" <bagrishu@amazon.com> writes:
> The current SLRU pages do not have any header, so there is a need to
> create a new page header format for these. Our investigations revealed
> that we need to:

> 1. track LSN to ensure durability and consistency of all pages (for redo
>    and full page write purposes)
> 2. have a checksum (for page correctness verification).
> 3. A flag to identify if the page is a relational or BufferedObject
> 4. Track version information.

Isn't this a nonstarter from the standpoint of pg_upgrade?

            regards, tom lane