Jeff Garzik wrote: > Douglas Gilbert wrote: > >> Just a suggestion if you want to bring /dev/sg into >> the picture for a SMP (and even a STP) passthrough. > > > Yep. That's another possibility, that falls into the 'block driver' > category [see list of categories in my 'ioctl' email], since it is > translated into a 'special' block request, and then sent to a normal > request_queue. > > Jens Axboe's bsg[1] has also been mentioned in the context of SMP. Jeff, Yes, I like the bsg model: one well known device (/dev/bsg), get a file descriptor and then bind to a "target". It reminded me of a network interface. As presented, it only bound to a block (or char?) device node (e.g. /dev/sda). I asked some questions about widening the variety of things it could bind to but Peter Jones suggested that binding was a necessary evil that should not be encouraged. So perhaps we could bind to a SAS host ... (and a SCSI device for those pesky things like safte, ses and wluns). Doug Gilbert - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
