From owner-freebsd-arch@FreeBSD.ORG Sat Apr 7 18:42:57 2007 Return-Path: X-Original-To: freebsd-arch@freebsd.org Delivered-To: freebsd-arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 899C916A406; Sat, 7 Apr 2007 18:42:57 +0000 (UTC) (envelope-from Michael.G.Williams@nokia.com) Received: from mgw-ext11.nokia.com (smtp.nokia.com [131.228.20.170]) by mx1.freebsd.org (Postfix) with ESMTP id 11D9013C4B8; Sat, 7 Apr 2007 18:42:56 +0000 (UTC) (envelope-from Michael.G.Williams@nokia.com) Received: from esebh107.NOE.Nokia.com (esebh107.ntc.nokia.com [172.21.143.143]) by mgw-ext11.nokia.com (Switch-3.2.5/Switch-3.2.5) with ESMTP id l37INfvw017983; Sat, 7 Apr 2007 21:23:43 +0300 Received: from daebh101.NOE.Nokia.com ([10.241.35.111]) by esebh107.NOE.Nokia.com with Microsoft SMTPSVC(6.0.3790.1830); Sat, 7 Apr 2007 21:23:41 +0300 Received: from daebe103.NOE.Nokia.com ([10.241.35.24]) by daebh101.NOE.Nokia.com with Microsoft SMTPSVC(6.0.3790.1830); Sat, 7 Apr 2007 13:23:38 -0500 x-mimeole: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Date: Sat, 7 Apr 2007 13:23:36 -0500 Message-ID: <2198383E1141814486F0B881B3260CF5E4ACAF@daebe103.NOE.Nokia.com> In-Reply-To: <20070407175439.GL63916@garage.freebsd.pl> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Host ID. Thread-Index: Acd5Ph6DXo+MNcgESS6Kxtu42OJqjgAA5Wmg References: <20070407120656.GD63916@garage.freebsd.pl><4617CB2D.8000508@gmail.com> <20070407175439.GL63916@garage.freebsd.pl> From: To: , X-OriginalArrivalTime: 07 Apr 2007 18:23:38.0344 (UTC) FILETIME=[DC8D6E80:01C77941] X-eXpurgate-Category: 1/0 X-eXpurgate-ID: 149371::070407212343-1B7AABB0-691CEF4B/0-0/0-1 X-Nokia-AV: Clean Cc: freebsd-arch@freebsd.org Subject: RE: Host ID. X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Apr 2007 18:42:57 -0000 How about considering mobile devices? Also, the IEEE has 802.21 which is defining an media independent ID, and also 802.1 which has a secure ID (see 802.1ae and .1af) Best Regards, Michael=20 -----Original Message----- From: owner-freebsd-arch@freebsd.org [mailto:owner-freebsd-arch@freebsd.org] On Behalf Of Pawel Jakub Dawidek Sent: Saturday, April 07, 2007 10:55 AM To: Pawel Worach Cc: freebsd-arch@freebsd.org Subject: Re: Host ID. On Sat, Apr 07, 2007 at 06:47:41PM +0200, Pawel Worach wrote: > 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=20 > >exists, if it doesn't, it creates it via 'uuidgen > /hostid'. > >It will also set kern.hostuuid sysctl to this value and first four=20 > >bytes of MD5(kern.hostuuid) will be stored in kern.hostid. It will=20 > >allow to use gethostid(3). > >If root file system is read-only, different uuid will be genrated on=20 > >each boot. Not sure if anything better can be done here. > >As I said, I think it may be genrally useful. Imagine using it with=20 > >magic/variant symlinks, for example. > >Comments? >=20 > What about ... >=20 > # kenv smbios.system.uuid > 63F8BC81-475C-11CB-A074-CA3B9005F8F6 >=20 > Not all systems have SMBIOSen but maybe it can be used instead of /{,etc}/hostid if available ? We thought about this, but as you noted it's not always available. I want this to behave the same on each system. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am!