On Wed, Apr 29, 2009 at 12:36:13PM +1200, Daniel Reurich wrote:
> This is the last hurdle to supplanting proprietary hardware raid
> controllers with their proprietary drivers and management tool stacks,
> and make software raid actually use able for the average Joe with his
> small business server built from cheap commodity hardware running linux.
Huh? You have just written:
> In which case your probably using a hardware raid controller anyway so
> not our problem.
You first say that people with any non-trivial configuration should use
a HW RAID controller to justify the breaking of their systems. Then you
say you would like MD to replace HW RAID in such setups. This makes no
sense.
I have set up both cheap commodity hardware and (not so) big HW RAID.
Both have their uses and their weaknesses. Your "boot directly from
RAID5/6" scheme will _never_ work reliably on cheap commodity hardware
unless you fix the hardware _first_. If you want to use cheap commodity
hardware and still have reliability, then boot from RAID1. (And use
lilo; grub is still less reliable in some failure modes. Being dumb
helps sometimes.)
Gabor
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MTA SZTAKI Computer and Automation Research Institute
Hungarian Academy of Sciences
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