From owner-freebsd-arch@FreeBSD.ORG Wed Apr 18 11:25:58 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 9364516A403 for ; Wed, 18 Apr 2007 11:25:58 +0000 (UTC) (envelope-from yar@comp.chem.msu.su) Received: from comp.chem.msu.su (comp.chem.msu.su [158.250.32.97]) by mx1.freebsd.org (Postfix) with ESMTP id B7BDE13C43E for ; Wed, 18 Apr 2007 11:25:50 +0000 (UTC) (envelope-from yar@comp.chem.msu.su) Received: from comp.chem.msu.su (localhost [127.0.0.1]) by comp.chem.msu.su (8.13.4/8.13.4) with ESMTP id l3IBPhl2044746; Wed, 18 Apr 2007 15:25:43 +0400 (MSD) (envelope-from yar@comp.chem.msu.su) Received: (from yar@localhost) by comp.chem.msu.su (8.13.4/8.13.4/Submit) id l3I8vSJB041121; Wed, 18 Apr 2007 12:57:28 +0400 (MSD) (envelope-from yar) Date: Wed, 18 Apr 2007 12:57:28 +0400 From: Yar Tikhiy To: Pawel Jakub Dawidek Message-ID: <20070418085727.GB40826@comp.chem.msu.su> References: <20070407120656.GD63916@garage.freebsd.pl> <20070409145620.GF76673@garage.freebsd.pl> <200704091601.27454.max@love2party.net> <20070409163456.GJ76673@garage.freebsd.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070409163456.GJ76673@garage.freebsd.pl> User-Agent: Mutt/1.5.9i Cc: Max Laier , 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: Wed, 18 Apr 2007 11:25:58 -0000 On Mon, Apr 09, 2007 at 06:34:56PM +0200, Pawel Jakub Dawidek wrote: > On Mon, Apr 09, 2007 at 04:01:22PM +0200, Max Laier wrote: > > On Monday 09 April 2007 16:56, Pawel Jakub Dawidek 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. > > > > > > > > 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? > > > > I suppose: > > > > > Index: usr.bin/uuidgen/Makefile > > > ... > > > +BINDIR= /bin > > > > will be fixed by (repo)copy for the real commit? Otherwise, no. > > kan suggested not to do it: "respect CVS handicaps, please...." :) It can be repocopied some day in future, after all the stuff settles. Perhaps we should grep src/usr.bin for moved pieces and submit a collective usr.bin->bin repocopy request to the repomeisters. I have the repocopy of pkill in my personal list, which has been happy in /bin for quite a while now but still has its sources in usr.bin. -- Yar