Ok, I found a solution.
I enabled the overlay fs for the boot drive and everything works nicely

I am just pulling the plug.
I do have a dedicated "sudo shut down now" available via UDP, but it does not seem to fix the issue.

Hi all, I'm fairly new to the raspberry and am a bit overwhelmed. Here is my situation: I am building a photogrammetry 3d scanner / cam array containing 60 ESP32s and 10 Raspberry Pi Zero Ws running Debian lite on cheap 16GB cards. I power each module via pins from a stable 5V/40A PSU. My scripts pe...