Re: Dell Inspiron 8600 - Hot-swapping the bay.

[Alan Cox <alan redhat com>]

On Tue, Feb 07, 2006 at 01:57:53AM +1100, Steven Haigh wrote:
> >What I have noticed however, is that when the drive is reattached/ 
> >redetected, DMA mode is disabled. If cannot be re-enabled by using  
> >'hdparm -d1 /dev/hdc' - so the drive only runs in PIO mode. This  
> >means performance really sucks.
> >
> >Does anyone know enough about why this happens to try to hack a  
> >workaround for this? It would be awesome to get DMA running again  
> >after a hot-swap-in.
> 
> After testing this, I've lodged it as BZ #180161.

Not supported. And the framework needed to support it is no longer
present either. The libata layer is getting the needed code developed
for hot plug so should hopefully acquire support over time