Date: Wed, 22 Jul 2009 13:28:14 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Juli Mallett <jmallett@FreeBSD.org> Cc: 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: <4A66E9BE.2020603@FreeBSD.org> In-Reply-To: <eaa228be0907220157t6767adbdo77c1bf7144c1095b@mail.gmail.com> References: <200907220350.n6M3osaj030202@svn.freebsd.org> <4A66D0F4.4030108@FreeBSD.org> <eaa228be0907220157t6767adbdo77c1bf7144c1095b@mail.gmail.com>
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Juli Mallett wrote: > On Wed, Jul 22, 2009 at 01:42, Alexander Motin<mav@freebsd.org> wrote: >> Colin Percival wrote: >>> Remove the "dedicated disk mode" partitioning option from sysinstall, in >>> both the disk partitioning screen (the 'F' key) and via install.cfg (the >>> VAR_DEDICATED_DISK option). This functionality is currently broken in 8.x >>> due to libdisk and geom generating different partition names; this commit >>> merely acts to help steer users away from the breakage. >> Is there any other way to not align FS block to the ugly legacy 63 >> sectors per track boundary with sysinstall now? I think RAIDs won't be >> happy. May be it would be better to fix it? > > 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. -- Alexander Motin
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