Date: Mon, 9 Apr 2007 18:34:56 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Max Laier <max@love2party.net> Cc: freebsd-arch@freebsd.org Subject: Re: Host ID. Message-ID: <20070409163456.GJ76673@garage.freebsd.pl> In-Reply-To: <200704091601.27454.max@love2party.net> References: <20070407120656.GD63916@garage.freebsd.pl> <20070409145620.GF76673@garage.freebsd.pl> <200704091601.27454.max@love2party.net>
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--liqSWPDvh3eyfZ9k Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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? >=20 > I suppose: >=20 > > Index: usr.bin/uuidgen/Makefile > > ... > > +BINDIR=3D /bin >=20 > will be fixed by (repo)copy for the real commit? Otherwise, no. kan suggested not to do it: "respect CVS handicaps, please...." :) --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --liqSWPDvh3eyfZ9k Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFGGmswForvXbEpPzQRAjx5AKDeFFZ3pXwxF1WqrKD48nGXLiUDCgCfeHST G73xP8jNjNb8C5afLgSv++c= =kmOA -----END PGP SIGNATURE----- --liqSWPDvh3eyfZ9k--
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