CURRENT: WARNING! r273914 leaves filesystems in inconsistent/corrupted condition!

[Trond Endrestøl]

On Sat, 1 Nov 2014 18:03+0100, Dag-Erling Smørgrav wrote:

> Ian Lepore <ian at FreeBSD.org> writes:
> > Dag-Erling Smørgrav <des at des.no> writes:
> > > I think you misremember.  It is impossible to guarantee that the
> > > system will always have enough entropy right from the start.
> > > Servers, desktops and laptops will be fine, but embedded systems and
> > > VMs might not be able to unblock until they've seen some network
> > > traffic or loaded a chunk of pre-generated entropy (which is what
> > > /etc/rc.d/random does).  This is especially true for embedded
> > > systems that don't have enumerable buses and rely on fdt(4) to
> > > create the device tree at boot time.
> > And what about devices that are not connected to a network?
> 
> They still get entropy from interrupts and disk I/O.
> 
> > Oh well, I'm sure I'll be able to find some hacks to undo whatever
> > y'all have done now, and we'll just have to carry them as local diffs
> > forever.
> 
> How about you take a ****ing chill pill and read what I wrote earlier:
> this is a regression which we will try to fix.  But the bottom line is
> that the entropy has to come from *somewhere* and if whatever dinky
> device you're playing with doesn't provide any, that's not our fault.
> Buy http://www.amazon.com/dp/0833030477 and type it in, or something.
> We're engineers, not magicians.

Sirs, please control your temper, at least while on a public mailing 
list.

What good does the file /entropy do if boot up is delayed everytime 
during "Writing entropy file:"?

> (or maybe you can do something constructive, like write code to harvest
> entropy from background noise in ADCs, unused WiFi / 4G / BT radios or
> whatever else is available and submit a patch)

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