Messages in this thread | | | Date | Tue, 07 Feb 2006 09:22:26 +0000 | From | Matt Keenan <> | Subject | Re: CD writing - related question |
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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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