Date: Wed, 18 Apr 2007 12:57:28 +0400 From: Yar Tikhiy <yar@comp.chem.msu.su> To: Pawel Jakub Dawidek <pjd@freebsd.org> Cc: Max Laier <max@love2party.net>, freebsd-arch@freebsd.org Subject: Re: Host ID. Message-ID: <20070418085727.GB40826@comp.chem.msu.su> In-Reply-To: <20070409163456.GJ76673@garage.freebsd.pl> References: <20070407120656.GD63916@garage.freebsd.pl> <20070409145620.GF76673@garage.freebsd.pl> <200704091601.27454.max@love2party.net> <20070409163456.GJ76673@garage.freebsd.pl>
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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
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