[BlueOnyx:05632] Re: Raid issues

[Gerald Waugh]

On Mon, 2010-10-25 at 10:47 -0400, Richard C. Barker Sr. wrote:
> I am getting this message and would like to know is there is a command 
> can issue to maybe fix.
> 
> Personalities : [raid1]
> md0 : active raid1 sdb1[1] sda1[0]
>        256896 blocks [2/2] [UU]
> 
> md1 : active raid1 sdb2[1]
>        488126912 blocks [2/1] [_U]
> 
> unused devices: <none>
> 
> Summary of changes:
> 
> * There is a severe problem with disk integrity.
>   - raid_failure_email__sda
> 

try mdadm
  mdadm hotadd /dev/md1 /dev/sda2
or
  mdadm /dev/md1 -a /dev/sda2

one of those should work, and/or won't do any harm
then look at /proc/mdstat see if it is mirroring

Gerald