Re: Reshape RAID10 -> RAID1

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On Wed, Feb 26, 2014 at 06:03:17PM +1100, NeilBrown wrote:
> On Tue, 25 Feb 2014 22:05:32 -0800 Charles Polisher <cpolish@xxxxxxxxxxxx>
> wrote:
> 
> > Hi all,
> > 
> > I hope to reshape a RAID10 (near,2) with 2 failed and physically
> > removed members [_U_U] into a RAID1 hopefully [UU], for the
> > benefit of seeing a healthy status.
> > 
> > Is following proposed invocation correct?
> > 
> >    mdadm --grow /dev/md2 --level=1
> 
> I think so.  If not, mdadm will complain.
> 
> It is quite easy to experiment: create some largish file, use losetup to turn
> them into block device.  Then experiment with /dev/loop*

Thanks! Will do exactly that.
-- 
Charles

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