Host ID.

[Pawel Jakub Dawidek]

On Sat, Apr 07, 2007 at 02:25:09PM +0100, Ceri Davies wrote:
> On Sat, Apr 07, 2007 at 02:06:56PM +0200, Pawel Jakub Dawidek wrote:
> > Hi.
> > 
> > After initial discussion on IRC, I'd like to propose an addition...
> > I want to use it with ZFS, but I thought it may be useful in general, so
> > here it goes:
> > 
> > I'd like to assign a unique ID to the system on first boot.
> > 
> > When system starts, /etc/rc.d/hostid script checks if /hostid file
> > exists, if it doesn't, it creates it via 'uuidgen > /hostid'.
> > 
> > It will also set kern.hostuuid sysctl to this value and first four bytes
> > of MD5(kern.hostuuid) will be stored in kern.hostid. It will allow to
> > use gethostid(3).
> > 
> > If root file system is read-only, different uuid will be genrated on
> > each boot. Not sure if anything better can be done here.
> 
> Can we put it in /etc ?  That would allow setups like nanobsd to benefit
> too.

I think we can... I just want it to be available always. What is the
reason to keep entropy file in /?

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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