You need to "reinsert" it manually. It's very well explained in
this Howto:
http://www.tldp.org/HOWTO/Software-RAID-HOWTO.html
See the section 6.3 to know how to add the new drive to the array.
I tested this 3 days ago :)
----- Original Message -----
From: "Gerald Waugh" <gwaugh at frontstreetnetworks.com>
To: "CentOS mailing list" <centos at centos.org>
Sent: Saturday, May 21, 2005 5:09 PM
Subject: [CentOS] Software RAID CentOS4
> Hi,
>
> I have a system with two IDE controllers running RAID1.
> As a test I powered down, removed one drive (hdc), and powered back up.
> System came up fine, so powered down installed a new drive (hdc)
> And powered back up.
> /proc/mdstat indicatd RAID1 active with hda only. I thought it would
> Auto add the new hdc drive... Also when I removed the new drive and
> added
> The original hdc, the swap partitions were active hda and hdc but only
> hda on the other partitions. I has to add the other hdc partitions with
> mdadm -a.
>
> My mdadm.conf looks like;
>
> # mdadm.conf written out by anaconda
> DEVICE partitions
> MAILADDR root
> ARRAY /dev/md1 super-minor=1
> ARRAY /dev/md0 super-minor=0
> ARRAY /dev/md3 super-minor=3
> ARRAY /dev/md2 super-minor=2
>
> Shouldn't there be more information for mdadm to work with?
> How do you replace a failed drive and have it auto-configured?
>
> TIA
> Gerald
>
>
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