[CentOS] Re: raid1 disk format?

[Scott Silva]

on 6-11-2008 11:36 PM Les Mikesell spake the following:
> Scott Silva wrote:
> 
>>>
>>> I'm curious as to why 2 complete dd'd copies don't pair at boot.  One 
>>> comes up running and it does work to mdadm --add the partner 
>>> partitions and after the resync they do automatically pair at boot.
>>>
>> Are they dd copies of the different nodes (IE.. dd copy of sda paired 
>> with dd copy of sdb)?
> 
> No - what was sda was dd'd twice with the dups put in sda and sdb.
> 
That is why it didn't work. The superblock knows which drive it was on, and 
knows if there are dupes.

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