Re: Adding a new mirror disk to RAID1 configuration

[Luke Reeves <luke@neuro-tech.net>]

I've looked into raidreconf, but apparently it can only do operations on 
RAID levels 0 and 5.

	Luke

Guy wrote:
> My guess is you configured the RAID1 array as having 1 disk.  Now if you add
> more disks to it, they are spares.  You should have configured the array as
> having 2 disks, with 1 missing.  Then when you add a disk, it will re-build
> to it.
> 
> Read about raidreconf.  Google it, if needed!  It may allow you to modify a
> RAID1 array.  I know it allows you to add a disk to a RAID5 array, but don't
> know about RAID1.  I have never used this tool.
> 
> Guy
> 
> -----Original Message-----
> From: linux-raid-owner@vger.kernel.org
> [mailto:linux-raid-owner@vger.kernel.org] On Behalf Of Luke Reeves
> Sent: Friday, July 09, 2004 12:55 AM
> To: linux-raid@vger.kernel.org
> Subject: Adding a new mirror disk to RAID1 configuration
> 
> I have a system with two 40GB drives, and the first drive (hda) is setup 
>   under an md device with RAID1 driving it.  I'm trying to now make the 
> second disk, hdc, a mirror of the first.  When I try to add it using 
> mdadm the second disk becomes a spare and no synchronization is done. 
> Is there any way to add the second disk directly as a mirror?  Thanks.
> 
> 	Luke Reeves
> 	http://www.neuro-tech.net/
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