I’m playing around with systemd-nspawn containers, and one of the containers needs access to the GPU.
On boot (of the headless server) /dev/nvidia0 and /dev/nvidiactl don’t exist until I run something like nvidia-smi which seems to create them.
However, I can’t figure out how to encode this into my systemd unit file - I tried adding the following to the unit file:
ExecStartPre=/usr/bin/modprobe -abq nvidia
But it fails: nvidia-smi: NVIDIA-SMI has failed because it couldn’t communicate with the NVIDIA driver.
In order to bring the container up I need to:
1/ ssh into the server
2/ manually run nvidia-smi
3/ restart systemd-nspawn
Then it works fine.
So, my question is, what dependency to I need to have before starting the container in order to ensure the driver is ready to go?