svn commit: r195817 - head/usr.sbin/sysinstall

[Alexander Motin]

Juli Mallett wrote:
> On Wed, Jul 22, 2009 at 01:42, Alexander Motin<mav at 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