Random system crashes

Recently I’ve had random system crashes on a regular basis resulting in the need to do a reboot of my system, I only notice it’s crashed when an automation of some description has failed.

Quite a few odd things have been happening, all since V6 was released, some automations just fail (Such as setting a boolean variable), recently the tty ID of my Zigbee stick changed and lost all my Zigbee config, I also managed to replicate the faults on a fresh install of HA on a second SD card to rule that out.

I can’t see anything in the logs as it locks up and there isn’t anything in there to indicate any errors.

Pi 3B+
16GB SD card

Version core-2021.6.6
Installation Type Home Assistant OS
Development false
Supervisor true
Docker true
Virtual Environment false
Python Version 3.8.9
Operating System Family Linux
Operating System Version 5.10.17-v8
CPU Architecture aarch64

Does anyone know where I can find the logs or enable some sort of debug mode as this is the 3rd crash this week alone and the log file in /config seems to get overwritten/scrapped on boot.

Are you on 6 or 6.1?

Host Operating System Home Assistant OS 6.1
Update Channel stable
Supervisor Version supervisor-2021.06.6
Docker Version 20.10.6
Disk Total 13.9 GB
Disk Used 6.7 GB
Healthy true
Supported true
Board rpi3-64
Supervisor API ok
Version API ok
Installed Add-ons Check Home Assistant configuration (3.7.1), File editor (5.2.0), Samba share (9.3.1), Terminal & SSH (9.1.1), Mosquitto broker (5.1.1), deCONZ (6.9.0)

So it’s been stable for a few days, but I am killing parts of it and moving over to a virtual machine running on my HyperV server which has far more grunt and RAM available.