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Date:      Wed, 22 Jul 2009 09:02:21 -0700
From:      Randi Harper <randi@freebsd.org>
To:        Alexander Motin <mav@freebsd.org>
Cc:        Juli Mallett <jmallett@freebsd.org>, svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org
Subject:   Re: svn commit: r195817 - head/usr.sbin/sysinstall
Message-ID:  <e277d6c80907220902i25b2ba66u2855fe9830d70057@mail.gmail.com>
In-Reply-To: <4A66E9BE.2020603@FreeBSD.org>
References:  <200907220350.n6M3osaj030202@svn.freebsd.org> <4A66D0F4.4030108@FreeBSD.org> <eaa228be0907220157t6767adbdo77c1bf7144c1095b@mail.gmail.com> <4A66E9BE.2020603@FreeBSD.org>

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On Wed, Jul 22, 2009 at 3:28 AM, Alexander Motin <mav@freebsd.org> wrote:

> Juli Mallett wrote:
> > If you're interested in fixing this issue, you might want to look at
> > the need for compatibility names so that existing DD installs aren't
> > broken, and so DD installs work as-is without correcting libdisk's
> > expectations about slice/partition names for DD disks, which is pretty
> > invasive, too.  Not breaking new installs by not letting users install
> > broken systems is the absolute bare minimum approach, and given the
> > late date and the lack of movement on the kernel side, I've been
> > advocating for it for a while.
> >
> > See this message and others in the thread for some background:
> >
> > http://lists.freebsd.org/pipermail/freebsd-geom/2009-June/003567.html
>
> Sorry, ENOTIME. I am not advocating DD mode, it is really a hack. Offset
> 0 is just an easiest choice to align FS. Instead, I would really like
> sysinstall to honor real disk geometry instead of fake one. GEOM has
> support for reporting disk stripe size/offset and some GEOM classes
> already provide them. But sysinstall - the main tool which could benefit
> from it - ignores it.


This fix was intended - as Juli said - as a bare minimum approach until
sysinstall/libgeom happens. Using GEOM would fix a lot of problems with
sysinstall. I started poking at it a little while ago, but it's not going to
be a minor change, certainly not something that is going to make it in
anytime soon.

-- randi



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