Hello, I am still running into an issue where my pheonixminer just shuts down by itself without any error messages after around 3 days, when the log messages file reaches around 110-120MB.
The miner is running fine and then all of a sudden
2021.06.27:18:33:56.022: unkn Quitting...
and all GPUs are reset and the program closes.
Here is what the logs look like, note the log sizes.

System runs stable otherwise, I have the same situation on 4 different rigs all running different configuration of GPUs.
Any advice?
First, check temperatures, not just GPUs, but possibly the CPU itself. Then, check the voltages you have set for your video cards. While many can undervolt to a certain voltage and speed, other cards will have a problem if you don't give enough voltage to your video cards(both GPU and VRAM). Many people mistake that what seems to be a perfectly good configuration has a SMALL amount of instability that only shows up after a certain amount of time. One of your video cards may even be failing or having a problem, but I wouldn't jump to that conclusion just yet. Now, what operating system are you running, since drivers can also be the source of a lot of headaches.