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Re: Enabling Checksums

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Simon Riggs <simon@2ndQuadrant.com>
Cc: Jeff Davis <pgsql@j-davis.com>, Ants Aasma <ants@cybertec.at>, Florian Pflug <fgp@phlo.org>, Robert Haas <robertmhaas@gmail.com>, Greg Smith <greg@2ndQuadrant.com>, Andres Freund <andres@2ndQuadrant.com>, Bruce Momjian <bruce@momjian.us>, Heikki Linnakangas <hlinnakangas@vmware.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2013-04-25T14:37:22Z
Lists: pgsql-hackers 
Simon Riggs <simon@2ndQuadrant.com> writes:
> On 24 April 2013 21:06, Jeff Davis <pgsql@j-davis.com> wrote:
>> What goal are you trying to accomplish with this patch?

> That we might need to patch the checksum version on a production release.

I don't actually buy that argument, certainly not as something that
could happen in 9.3.

I'm inclined to think we should forget about this until we have a
concrete use-case for it.  As Jeff says, there is no need for pg_control
contents to be compatible across major releases, so there's no harm in
waiting if we have any doubts about how it ought to work.

			regards, tom lane