Re: SLRUs in the main buffer pool - Page Header definitions - Mailing list pgsql-hackers

From Tom Lane
Subject Re: SLRUs in the main buffer pool - Page Header definitions
Date
Msg-id 3693890.1655939534@sss.pgh.pa.us
Whole thread Raw
In response to SLRUs in the main buffer pool - Page Header definitions  ("Bagga, Rishu" <bagrishu@amazon.com>)
Responses Re: SLRUs in the main buffer pool - Page Header definitions  (Andres Freund <andres@anarazel.de>)
List pgsql-hackers
"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



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