bug#36380: service urandom-seed takes too long on boot

[Leo Famulari]

On Mon, Dec 28, 2020 at 12:28:09AM +0100, Stefan wrote:
> “-object rng-random,id=id,filename=/dev/random
> Creates a random number generator backend which obtains entropy from a device 
> on the host. The id parameter is a unique ID that will be used to reference 
> this entropy backend from the virtio-rng device. The filename parameter 
> specifies which file to obtain entropy from and if omitted defaults to 
> /dev/urandom.”

I see, so there is the problem.

It should either be changed to "filename=/dev/urandom", or the QEMU
rng-random mechanism should be disabled.

We still need to implement a timeout to workaround this kind of
misconfiguration... help wanted :)