note that we currently default to auto, which means that if /var/log/journal has not been created manually by you, journald will never ever write to disk but only use a ringbuffer in ram. in the current setup journald should actually never write to SD, do you have any evidence that it does write ?
note that we currently default to auto, which means that if /var/log/journal has not been created manually by you, journald will never ever write to disk but only use a ringbuffer in ram. in the current setup journald should actually never write to SD, do you have any evidence that it does write ?