Re: IPC/MultixactCreation on the Standby server

> On 4 Dec 2025, at 19:17, Heikki Linnakangas <hlinnaka@iki.fi> wrote:
>
> I tried to modify the new wraparound TAP test to reproduce that, but it turned out to be difficult because you need
tohave multiple backends assigning multixids concurrently to hit that. 

IIUC, new TAP test verifies multixact Id wraparound (-m key in pg_resetwal).
While the bug was in multixact offsets wraparound.

I'm on-call for the rest of this week, but a bit later I can produce fast tests for all kinds of wraparounds :)

But as you said, hopefully soon there won't be wraparounds, and, what's more important, offsets\members space
exhaustion.


Best regards, Andrey Borodin.