Re: no-reboot mirror creation

[Laurent CARON <lcaron@unix-scripts.info>]

Rob Harris wrote:
> OK. Stupid question.
> 
> So, I have a 300G drive in my system, 'bout half full running jfs.
> 
> I added a second 300G drive because I want to do mirroring.
> 
> I don't have place to copy the data off to create a clean two-drive 
> mirror from the get go, so I:
> 
> - created a one-drive mirror using mdadm (requiring --force) on the new 
> disk

you should have done

mdadm -Cv /dev/md0 -l1 -n2 /dev/XXX missing


> - mounted it
> - copied the data over from the non-raid disk to the raid disk
> - verified that all the data was copied
> - changed the type of the partition on the old disk to FD
> - # mdadm /dev/md1 --add /dev/hdf1 (added the newly created partition)
> 
> It seemed to work... kinda. It didn't actually add the partition to the 
> mirror, but just set it as a spare; i.e. I never see it syncing the data 
> from the old disk to the new.
> 
> Is there a way that I can add the drive to the mirror without setting it 
> as a spare?
> 
> Thanks.
> -R
> 
> -
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