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From: Tom Lane <[email protected]>
To: Bagga, Rishu <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: SLRUs in the main buffer pool - Page Header definitions
Date: Wed, 22 Jun 2022 19:12:14 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

"Bagga, Rishu" <[email protected]> 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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