It's my understanding that openbsd boot will take a bit longer to seed the random seed file when there is not a prior seed file on a writable filesystem, just l

It's my understanding that openbsd boot will take a bit longer to seed the random seed file when there is not a prior seed file on a writable filesystem, just like during the first boot after the os install. This was my experience when I created an openbsd router that booted from a single file and had no persistent storage. It's also my understanding that /dev/urandom on openbsd will never block for a user process, nor anything that I've ever needed to worry about in the kernel. Some additional info that I found: https://www.openbsd.org/papers/hackfest2014-arc4random/ https://www.openbsd.org/papers/hackfest2014-arc4random/