Re: allow spread checkpoints when changing checksums online

From: Tomas Vondra <tomas(at)vondra(dot)me>
To: Daniel Gustafsson <daniel(at)yesql(dot)se>, Ewan Young <kdbase(dot)hack(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: allow spread checkpoints when changing checksums online
Date: 2026-07-11 17:05:30
Message-ID: 8154744d-f5f9-43a6-8941-c80ad31bb0e2@vondra.me
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On 7/8/26 15:30, Daniel Gustafsson wrote:
>> On 8 Jul 2026, at 13:53, Ewan Young <kdbase(dot)hack(at)gmail(dot)com> wrote:
>
>> In func-admin.sgml the signature of pg_disable_data_checksums documents
>> the default as false:
>>
>> pg_disable_data_checksums ( fast bool DEFAULT false )
>> but the actual default is true. pg_proc.dat sets
>
> Nice catch and +1, I missed that one.
>

Yep, good catch. I went between true/false defaults a couple times, and
forgot to update all the places. The v4 fixes this, along with some
minor comment improvements.

I think it's ready, so I'm planning to go over it once more and push it
soon-ish.

regards

--
Tomas Vondra

Attachment Content-Type Size
v4-0001-Allow-using-spread-checkpoints-when-enabling-disa.patch text/x-patch 17.6 KB

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