[CentOS] system "stuck" with 2.6.18-128 kernel. how to move to 2.6.18-194.17?

On Wed, Oct 6, 2010 at 12:48 PM, Les Mikesell <lesmikesell at gmail.com> wrote:
> On 10/6/2010 2:36 PM, Aleksey Tsalolikhin wrote:
>>
>>      #  mdadm /dev/md0 --add /dev/sda1
>>      mdadm: Cannot open /dev/sda1: Device or resource busy
>>      #
>>
>
> Do you still have it mounted as you mentioned above?  If so, unmount it.

*Facepalm*

That was it.  Thank you.  /dev/sda1 is back in /dev/md0 and reconstruction
is in process.

>  If it shows as 'failed' in /proc/mdstat you would have to use mdadm to
> remove it before adding it back.

Ah!  Got it, thanks, Les!

Aleksey