mdadm hot remove failed

[Gilboa Davara]

On Tue, 2006-09-12 at 10:36 -0500, Matthew Benjamin wrote:
> Can someone tell me why I am unable to successfully break my mirrored
> drive. I am unable to find out what is making my device to busy to
> break the drive. I just get the following error message when
> attempting a mdadm --remove ...  prior to that, I did a mdadm
> --fail ...
> 
> mdadm: hot remove failed for /dev/hdb1: Device or resource busy
> 


You'll need to fail (--manage --fail) the drive before removing it.
More-ever, If you want to destroy the RAID array, you'll need to stop
the RAID device first.

Gilboa