Re: Reshape RAID10 -> RAID1

On Wed, Feb 26, 2014 at 06:03:17PM +1100, NeilBrown wrote:

On Tue, 25 Feb 2014 22:05:32 -0800 Charles Polisher [off-list ref]
wrote:

quoted

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