On Mon, Apr 20, 2026 at 12:11:45PM +0530, Ayush Tiwari wrote:
No need to. I have poked at this problem a bit more, stracing my way as you did, and after more testing across v15~HEAD, I have applied it. For v15, a difference becomes necessary at HandleChildCrash(), or we would begin to fail the shutdown sequence should the startup process have the idea to PANIC. This maps with the changes in v18 and HEAD where this has been replaced by a switch/case.
Another thing that I have spent a long time looking at is process_pm_child_exit() and the interference that this could generate for the startup process case, but here as well I did not spot any issue, so I think that we are in the clear.
There was also a comment at the top of postmaster.c that incorrectly claimed that the checkpointer and the background writer were only started after switch to PM_RECOVERY, which was wrong. I have tweaked that while on it.
That was a good catch overall.
Thanks a lot Michael for looking into it and pushing it!
