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Re: Software RAID w/ mdadm -- Need Partitions?



On Thu, Feb 26, 2009 at 02:26:25AM +0000, Kelly Harding wrote:
> >>
> >> Also, with Linux Software RAID, you can convert the metadata of RAID1
> >> to RAID5 to expand a 2 drive RAID1 mirrored array to a 2 drive RAID5
> >> degraded array to add another drive to later. I've done this multiple
> >> times and had no problems with it.
> >
> > I thought it wasn't possible to convert raid type. sure it wasn't a
> > degraded raid5 you started with ?
> >
> 
> I'm quite sure.
> 
> Read this blog post:
> http://scott.wallace.sh/2007/04/converting-raid1-to-raid5-with-no-data-loss/
> 
> It does indeed work, as I've done it twice now.

so the blog states to recreate the raid as a 2 disk raid5, just don;t
overwrite the information because it is in the same state as a raid5
array with just 2 disks.

I thought when you said convert, you were using the --grow command to
convert from raid1 to raid5.



> 
> Kelly
> 
> 
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-- 
"I don't want nations feeling like that they can bully ourselves and our allies. I want to have a ballistic defense system so that we can make the world more peaceful, and at the same time I want to reduce our own nuclear capacities to the level commiserate with keeping the peace."

	- George W. Bush
10/23/2000
Des Moines, IA

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