Testing CAM wrapper for ata(4) controller drivers

Scott Long scottl at samsco.org
Thu Dec 10 14:31:45 UTC 2009

On Dec 10, 2009, at 3:02 AM, Alexander Motin wrote:
> Alexander Motin wrote:
>> The main regression of the new mode is a lack of ataraid  
>> alternative, to
>> support cheap BIOS-based ATA RAIDs. If somebody has time and wish to
>> port that code from inside ata(4) into GEOM module, to make it work  
>> over
>> CAM also, I would appreciate that and propose a help, if needed.
> May be it would be easier to just teach gmirror, gstripe and gconcat  
> to
> handle ATA RAIDs metadata formats, to not duplicate and support the  
> rest
> of code.

The existing graid modules are not well suited for learning new  
metadata.  I have plans for restructuring them into a stack within  
GEOM that handles metadata separate from the transforms.


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