Re: IPC/MultixactCreation on the Standby server

[Andrey Borodin]

> On 4 Dec 2025, at 19:17, Heikki Linnakangas <hlinn...@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 to have 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.