On Wed Feb 15, 2012 at 05:51:12 +0530, David Liontooth wrote:
>
> Not knowing what I was doing, I created a RAID1 with a single drive and
> a spare, as below.
>
> I'd like to add the spare to the array. How do I do this without rebooting?
>
> Cheers,
> Dave
>
>
> # definitions of existing MD arrays
> ARRAY /dev/md0 level=raid1 num-devices=1
> UUID=9921faab:5d93510e:0db287f1:dc103b07
> spares=1
>
> # mdadm --detail /dev/md0
> /dev/md0:
> Version : 0.90
> Creation Time : Fri Jul 18 14:57:40 2008
> Raid Level : raid1
> Array Size : 104320 (101.89 MiB 106.82 MB)
> Used Dev Size : 104320 (101.89 MiB 106.82 MB)
> Raid Devices : 1
> Total Devices : 2
> Preferred Minor : 0
> Persistence : Superblock is persistent
>
> Update Time : Wed Feb 15 03:37:11 2012
> State : clean
> Active Devices : 1
> Working Devices : 2
> Failed Devices : 0
> Spare Devices : 1
>
> UUID : 9921faab:5d93510e:0db287f1:dc103b07
> Events : 0.218
>
> Number Major Minor RaidDevice State
> 0 8 1 0 active sync /dev/sda1
>
> 1 8 17 - spare /dev/sdb1
>
That's a straightforward one - you just need to increase the number of
active members in the array:
mdadm --grow /dev/md0 -n 2
Cheers,
Robin
--
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( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> |
/ / ) | Little Jim says .... |
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