Dustin C. Hatch
75a146e19e
When a VM uses a serial port for its default console, kernel messages (e.g. panics) are lost if no console client is connected at the time. This is a major disadvantage when compared to a graphical console, which usually at least keeps a "screenshot" of the console when the kernel crashes. While researching the available console device types to determine how best to implement a tool that would both log the output from the serial console at all times, while still allowing interactive connections to it, I discovered that _libvirt_ actually already has this exact functionality built-in: https://libvirt.org/formatdomain.html#consoles-serial-parallel-channel-devices