Re: ANNOUNCE: mdadm 3.1.1 - A tool for managing Soft RAID under Linux

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On 12/01/2009 10:19 AM, Bill Nottingham wrote:
> Hans de Goede (hdegoede@xxxxxxxxxx) said: 
>>> No, not quite.  You can use superblock version 1.0 on /boot and grub
>>> will then work.  Both version 0.90 and version 1.0 superblocks are at
>>> the end of the device and do not confuse boot loaders.  Here's a summary
>>> of superblock format differences:
>>>
>>
>> Ok, so for /boot we must specify a superblock version, should we use 1.0 or
>> 0.9 (I assume 1.0, but confirmation of that would be good).
> 
> Knowing little about the details, couldn't the possibility of fixing grub
> be investigated?

Grub *has* been fixed, it's called grub2.  The amount of work necessary
to make grub do what grub2 already does isn't worth it, just upgrade to
grub2.  However, that only solves the x86 arches, not anything else, and
I don't know of any other boot loaders that work with anything other
than 1.0/0.90 superblocks, so we still wouldn't have a universal
solution.  Hence, sticking with 1.0 superblocks even if you have grub2
simply makes the most sense.

-- 
Doug Ledford <dledford@xxxxxxxxxx>
              GPG KeyID: CFBFF194
	      http://people.redhat.com/dledford

Infiniband specific RPMs available at
	      http://people.redhat.com/dledford/Infiniband

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