From owner-freebsd-arch@FreeBSD.ORG Mon Apr 9 14:56:38 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 0CA7E16A401 for ; Mon, 9 Apr 2007 14:56:38 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: from mail.garage.freebsd.pl (arm132.internetdsl.tpnet.pl [83.17.198.132]) by mx1.freebsd.org (Postfix) with ESMTP id A72E613C483 for ; Mon, 9 Apr 2007 14:56:37 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id D878A48805; Mon, 9 Apr 2007 16:56:35 +0200 (CEST) Received: from localhost (154.81.datacomsa.pl [195.34.81.154]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id 7085B45696 for ; Mon, 9 Apr 2007 16:56:30 +0200 (CEST) Date: Mon, 9 Apr 2007 16:56:20 +0200 From: Pawel Jakub Dawidek To: freebsd-arch@FreeBSD.org Message-ID: <20070409145620.GF76673@garage.freebsd.pl> References: <20070407120656.GD63916@garage.freebsd.pl> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="eNMatiwYGLtwo1cJ" Content-Disposition: inline In-Reply-To: <20070407120656.GD63916@garage.freebsd.pl> X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 User-Agent: mutt-ng/devel-r804 (FreeBSD) X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=BAYES_00 autolearn=ham version=3.0.4 Cc: 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: Mon, 09 Apr 2007 14:56:38 -0000 --eNMatiwYGLtwo1cJ Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 07, 2007 at 02:06:56PM +0200, Pawel Jakub Dawidek wrote: > Hi. >=20 > 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: >=20 > I'd like to assign a unique ID to the system on first boot. >=20 > When system starts, /etc/rc.d/hostid script checks if /hostid file > exists, if it doesn't, it creates it via 'uuidgen > /hostid'. >=20 > 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). >=20 > If root file system is read-only, different uuid will be genrated on > each boot. Not sure if anything better can be done here. >=20 > As I said, I think it may be genrally useful. Imagine using it with > magic/variant symlinks, for example. Here is the patch: http://people.freebsd.org/~pjd/patches/hostid.patch Any objections? --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --eNMatiwYGLtwo1cJ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFGGlQUForvXbEpPzQRAsmHAJ4iyFpbBvAApzFIy9iUdHHwx/o4NACg8gVA NpAO1Uqhczu1+VXv+4E06lk= =s3BH -----END PGP SIGNATURE----- --eNMatiwYGLtwo1cJ--