Re: Xen nuisance messages

["Luke S. Crawford" <lsc%prgmr.com@localhost>]

On Fri, Feb 24, 2012 at 12:08:32PM +0100, Manuel Bouyer wrote:
> On Thu, Feb 23, 2012 at 10:37:28PM -0500, David Howland wrote:
> > Running NetBSD 6.0_BETA Xen PV DomU under Debian Squeeze.
> > 
> > I get this nonstop:
> > 
> > cprng 359112d1: WARNING insufficient entropy at creation.
> > 
> > Does a Xen machine have any way to generate entropy?
> 
> Not a strong one. The only sources of entropy are xbd and xennet which are
> disabled by default (because they're probably not very good) but can
> be enabled with rndctl.
> AFAIK no interface has been designed to get some entropy from dom0.

What I want is a userland program that can connect over the network 
to an 'entropy server' -  a dedicated server with a hardware entropy
generation dongle, and suck down the entropy it wants.  

One of my customers has a similar setup on linux using his own entropy
generation servers using netcat and rngd.  I haven't set up my own 
entropy generation servers yet, nor have I thought through the potential
problems with this setup (for that matter, I'm not really qualified to
think through the potential problems.)