Re: [PATCH] Update the random(4) documentation towards a more accurate view on /dev/urandom

Am Freitag, 21. Oktober 2016, 13:56:33 CEST schrieb Theodore Ts'o:

Hi Theodore,

quoted

Although I this is not related to the man page, please note that I have
tried this approach during the development of my LRNG. systemd did not
like that at all. The system did not come up, even though there was only
0.5 seconds it would need to wait until getrandom would unblock during my
tests.

Although I'd argue this is a systemd bug, to be fair to systemd, when
I briefly tried this approach, the zero day kernel testing system, let
me know than an older version of Ubuntu (which wasn't using systemd),
and CeroWrt (which also doesn't use systemd) were also hanging.

I haven't checked to see if that was because Cerowrt was trying to do
something security sensitive such as creating ssh host keys.  I've
been too busy, and I was afriad the result would be too depressing....
Besides, I don't use Cerowrt thes days, since I'm using Google OnHub
now.  :-)

I will dig into that matter a bit further as I need an answer for this 
behavior for other purposes.

When I find the cause, I will report it.

Ciao
Stephan
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