From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Adrian Bunk <bunk@stusta.de>
Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: /dev/sd*
Date: Wed, 09 Aug 2006 23:01:43 +0100 [thread overview]
Message-ID: <1155160903.5729.263.camel@localhost.localdomain> (raw)
In-Reply-To: <20060809212124.GC3691@stusta.de>
Ar Mer, 2006-08-09 am 23:21 +0200, ysgrifennodd Adrian Bunk:
> It might be a bit out of the scope of this thread, but why do some many
> subsystems use the /dev/sd* namespace?
>
> Real SCSI devices use it.
> The USB mass storage driver uses it.
USB storage is real SCSI.
> libata uses it.
>
> I'd expext SATA or PATA devices at /dev/hd* or perhaps at /dev/ata* -
> but why are they at /dev/sd*?
ATA uses the top half of the scsi stack so ends up using the top layer
scsi drivers. Its probably more efficient than writing new driver
clones, especially as non disk ATA is also real SCSI (or very close).
You can use /dev/ata if you want - its just a udev problem ;)
Alan
next prev parent reply other threads:[~2006-08-09 21:43 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-09 17:29 Merging libata PATA support into the base kernel Alan Cox
2006-08-09 20:16 ` Mark Lord
2006-08-10 6:13 ` Jeff Garzik
2006-08-10 6:20 ` Jan Engelhardt
2006-08-10 6:25 ` Olaf Hering
2006-08-11 15:47 ` Mark Lord
2006-08-15 13:31 ` Matthieu CASTET
2006-08-15 13:35 ` Tejun Heo
2006-08-15 14:01 ` Jeff Garzik
2006-08-09 21:21 ` /dev/sd* Adrian Bunk
2006-08-09 21:40 ` /dev/sd* Mark Lord
2006-08-09 22:01 ` Alan Cox [this message]
2006-08-09 22:18 ` /dev/sd* Adrian Bunk
2006-08-10 1:44 ` /dev/sd* Alan Cox
2006-08-10 6:19 ` /dev/sd* Jan Engelhardt
2006-08-10 4:46 ` /dev/sd* Greg KH
2006-08-10 12:36 ` /dev/sd* Gabor Gombas
2006-08-10 12:37 ` /dev/sd* Jeff Garzik
2006-08-17 3:17 ` /dev/sd* Lee Trager
2006-08-17 7:58 ` /dev/sd* Michael Tokarev
2006-08-17 8:10 ` /dev/sd* Jan Engelhardt
2006-08-17 8:42 ` /dev/sd* Alan Cox
2006-08-17 8:01 ` /dev/sd* Jan Engelhardt
2006-08-17 8:29 ` /dev/sd* Lee Trager
2006-08-17 9:21 ` /dev/sd* Jan Engelhardt
2006-08-18 7:11 ` /dev/sd* Seewer Philippe
2006-08-18 8:52 ` /dev/sd* Jan Engelhardt
2006-08-18 9:19 ` /dev/sd* Tejun Heo
2006-08-18 14:57 ` /dev/sd* Alan Cox
2006-08-18 15:51 ` /dev/sd* Jan Engelhardt
2006-08-18 16:47 ` /dev/sd* Lee Revell
2006-08-18 17:02 ` /dev/sd* Alan Cox
2006-08-21 6:04 ` /dev/sd* Lee Trager
2006-08-21 6:17 ` /dev/sd* Jan Engelhardt
2006-08-18 12:45 ` /dev/sd* Bill Davidsen
2006-08-18 15:48 ` /dev/sd* Jan Engelhardt
2006-08-19 0:15 ` /dev/sd* Gabor Gombas
2006-08-17 8:45 ` /dev/sd* Alan Cox
2006-08-10 6:24 ` Merging libata PATA support into the base kernel Andi Kleen
2006-08-10 12:37 ` Alan Cox
2006-08-10 12:20 ` Jens Axboe
2006-08-10 14:14 ` Alan Cox
2006-08-10 13:59 ` Jens Axboe
2006-08-10 15:54 ` Alan Cox
2006-08-10 19:02 ` Jason Lunz
2006-08-10 19:40 ` Rafael J. Wysocki
2006-08-17 3:26 ` Lee Trager
2006-08-17 9:18 ` Pavel Machek
2006-08-17 9:52 ` Alan Cox
2006-08-17 9:45 ` Pavel Machek
2006-08-17 11:51 ` Alan Cox
2006-08-18 3:38 ` Lee Trager
2006-08-18 3:57 ` Lee Trager
2006-08-18 16:01 ` Alan Cox
2006-08-18 19:22 ` Lee Trager
2006-08-18 20:50 ` Alan Cox
2006-08-19 8:17 ` Lee Trager
2006-08-21 0:44 ` Lee Trager
2006-08-10 19:47 ` Jens Axboe
2006-08-10 19:54 ` Rafael J. Wysocki
2006-08-11 15:48 ` Mark Lord
2006-08-10 22:27 ` Krzysztof Halasa
2006-08-24 3:31 ` Albert Lee
2006-08-24 3:38 ` Jeff Garzik
2006-08-24 4:13 ` Doug Maxey
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