Tuesday, September 2, 2008

Re: [HACKERS] Page layout footprint

Zdenek Kotala wrote:
> Hi Heikki,
>
> I'm sorry for lack of explanation. It is my fault.
>
> Heikki says (on commit fest wiki):
> ------------
> I believe I debunked this patch enough already. Apparently there's some
> compatibility issue between 32-bit and 64-bit Sparcs, but this patch
> didn't catch that. It doesn't seem like this provides any extra safeness
> or better error messages. If I'm missing something, please provide more
> details on what scenario we currently have a problem, and how this helps
> with it.
> ------------
>
> The original proposal
> (http://archives.postgresql.org/message-id/489FC8E1.9090307@sun.com)
> contains two parts. First part is implementation of --footprint cmd line
> switch which shows you page layout structures footprint. It is useful
> for development (mostly for in-place upgrade) and also for manual data
> recovery when you need to know exact structures. Second part was add
> this information also into pg_control.file, but how you correctly
> mentioned there is not real use case to do it at this moment.
>
> However, there is still --footprint switch which is useful and it is
> reason why I put it on wiki for review and feedback. The switch could
> also use in build farm for collecting footprints from build farm members.

Ok, understood. I'll take another look from that point of view.

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com

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