Re: CD writing - related question

[Matt Keenan <matt.keenan@btinternet.com>]

Jens Axboe wrote:

> On Mon, Jan 30 2006, Bill Davidsen wrote:
>  
>
> > Please take this as a question to elicit information, not an invitation 
> > for argument.
> >
> > In Linux currently:
> > SCSI - liiks like SCSI
> > USB - looks like SCSI
> > Firewaire - looks like SCSI
> > SATA - looks like SCSI
> >    
>
> SATA will _not_ look like SCSI in the future.
>
>  
>
> > Compact flash and similar - looks like SCSI
> >    
>
> ? CF adapters are usually IDE, so looks like ATA.
>
>  
>
> > ATAPI - looks different unless ide-scsi used
> >    
>
> But it's all besides the point, it doesn't matter what the device
> special file looks like (if it's SCSI or not). What matters is that you
> talk to the device the same way - and that way is currently SG_IO.
>
> That a device hangs off the SCSI stack because that is the way the
> author wrote eg usb-storage is irrelevant. What matters is that you open
> the device in question and use SG_IO to talk to it.
>
> Talking about the SCSI stack and ide-scsi completely misses the point.
>
>  
Jens,

Is there a document that clearly lists how these components (SCSI, 
SG_IO, ATA/PI etc et al) connect together and what protocol / transports 
they use? I suspect the problem with all these current arguments is that 
very few people understand how this all works / connects. I think alot 
of people equate kconfig options with how the stuff works under the hood 
(even though a number of these config options are badly named to say the 
least).

Matt

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