From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <200504131313.j3DDDhJ16603@augusta.math.psu.edu> To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu> Subject: Re: [9fans] page fault with lock held In-Reply-To: Your message of "Tue, 12 Apr 2005 16:58:44 EDT." Date: Wed, 13 Apr 2005 09:13:43 -0400 From: Dan Cross Topicbox-Message-UUID: 37552af2-ead0-11e9-9d60-3106f5b1d025 Russ Cox writes: > > > I had wanted to see an sdloopback device (devsdloop was I suppose > > what I called it) that could speak SCSI to a file descriptor that > > could come from anywhere. Then things like this might not need to > > be in the kernel at all. > > sd has little to do with scsi. > in particular, these devices don't speak scsi. Maybe I'm confused; it's been a while. I thought that AoE was ATA over Ethernet or something like that, and that ATA was basically the SCSI protocol over different electronics. I was originally looking at this in terms of a digital camera that connected via USB, which did speak SCSI. Regardless, the salient point was that there should some way to hook into the devsd framework from userland. - Dan C.