Re: IPC/MultixactCreation on the Standby server

From: Maxim Orlov <orlovmg(at)gmail(dot)com>
To: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Cc: Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Álvaro Herrera <alvherre(at)kurilemu(dot)de>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Ivan Bykov <i(dot)bykov(at)modernsys(dot)ru>, Kirill Reshke <reshkekirill(at)gmail(dot)com>
Subject: Re: IPC/MultixactCreation on the Standby server
Date: 2025-12-05 16:36:20
Message-ID: CACG=ezbtm+LOzEMyLX7rzGcAv3ez3F6nNpSJjvZeMzed0Oe6Pw@mail.gmail.com
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On Fri, 28 Nov 2025 at 22:51, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> wrote:

>
> I moved the wraparound test to a separate test file and commit. More
> test coverage is good, but it's quite separate from the bugfix and the
> wraparound related test shares very little with the other test. The
> wraparound test needs a little more cleanup: use plain perl instead of
> 'dd' and 'rm' for the file operations, for example. (I did that with the
> tests in the 64-bit mxoff patches, so we could copy from there.)
>
> It's good that the test was added. But it seems like it could be
improved a bit. The problem is, it only runs successfully with a
standard block size. Plus, the comment about the number of bytes was a
bit unclear, for my taste. PFA patch, it should make this test pass
with different block sizes.

--
Best regards,
Maxim Orlov.

Attachment Content-Type Size
0001-Improve-7b81be9b42-Add-test-for-multixid-wraparound.patch application/octet-stream 1.6 KB

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