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Date:      Thu, 30 Dec 2004 00:25:36 +0200
From:      Ruslan Ermilov <ru@FreeBSD.org>
To:        Maxim Sobolev <sobomax@portaone.com>
Cc:        current@FreeBSD.org
Subject:   Re: Building 4.x releases on 5.x and 6.x
Message-ID:  <20041229222536.GD36053@ip.net.ua>
In-Reply-To: <41D31EC9.5050909@portaone.com>
References:  <41D31B8E.7030305@portaone.com> <41D31CEE.5040803@wadham.ox.ac.uk> <41D31EC9.5050909@portaone.com>

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Hi Maxim,

On Wed, Dec 29, 2004 at 11:16:57PM +0200, Maxim Sobolev wrote:
> Colin Percival wrote:
> >Maxim Sobolev wrote:
> >
> >>Does anybody knows if subject is possible? I guess that it is not due 
> >>to usage of vn(4) in the release building process, has anybody any 
> >>insights about actual state of things and/or another potential 
> >>problems in mind. If the only problem is vn(4) vs. md(4), I think it 
> >>can be solved quite easily, while providing a good way to avoid having 
> >>separate test machines for oldest branches.
> >
> >
> >I'm fairly certain that this is possible; certainly what I do on my FreeBSD
> >Update buildbox (building 4.x worlds and kernels inside jails while running
> >a 5.x kernel) is pretty much equivalent.
> 
> Making buildworld & buildkernel is not the same as building release, 
> since make release involves creating floppies, even for the CD-based 
> install, which in turn requires vn(4) or md(4).
> 
The doFS.sh script (even in 4.x) supports both vn(4) and md(4).

> >One problem you may encounter involves /dev -- you'll need to mount a devfs
> >inside the 4.x chroot rather than trying to MAKEDEV everything.  I'm not
> >sure if the `make release` code handles this.
> 
> Checked release building scripts and found that there is some 
> conditional code already which uses vn(4) on older system and md(4) on 
> newer ones. Will try now to see if I can get it working.
> 
> Thanks for turning me in the right direction.
> 
One thing you'll definitely need is to install the Perl port in
LOCAL_SCRIPT.  Mounting /dev (much like the RELENG_5 and HEAD
versions of release/Makefile do) will also be needed.  Note that
you should be using the 4.x version of release/Makefile* to
start "make release", and use WORLDDIR to point to your
/usr/src, something like this:

	cd /tmp
	cvs co -rRELENG_4 -l release
	cd /usr/src/release
	make -f /tmp/Makefile release ...

P.S.  Last time I tried it (more than a year ago), it worked.


Cheers,
-- 
Ruslan Ermilov
ru@FreeBSD.org
FreeBSD committer

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