From: Douglas Gilbert <dougg@torque.net>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: "Moore, Eric Dean" <Eric.Moore@lsil.com>,
Luben Tuikov <luben_tuikov@adaptec.com>,
Christoph Hellwig <hch@lst.de>,
jejb@steeleye.com, linux-scsi@vger.kernel.org
Subject: Re: [PATCH 1/4] sas: add flag for locally attached PHYs
Date: Fri, 21 Oct 2005 13:25:46 +1000 [thread overview]
Message-ID: <43585FBA.20506@torque.net> (raw)
In-Reply-To: <43584F8F.4070403@pobox.com>
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
next prev parent reply other threads:[~2005-10-21 3:24 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-20 15:25 [PATCH 1/4] sas: add flag for locally attached PHYs Moore, Eric Dean
2005-10-20 15:55 ` Luben Tuikov
2005-10-20 16:01 ` Christoph Hellwig
2005-10-20 16:51 ` Luben Tuikov
2005-10-20 17:03 ` Christoph Hellwig
2005-10-20 17:22 ` Arjan van de Ven
2005-10-20 20:10 ` Luben Tuikov
2005-10-21 8:16 ` Arjan van de Ven
2005-10-20 20:02 ` Luben Tuikov
2005-10-21 0:01 ` Andrew Patterson
2005-10-21 0:46 ` ioctls, etc. (was Re: [PATCH 1/4] sas: add flag for locally attached PHYs) Jeff Garzik
2005-10-21 5:09 ` Mike Christie
2005-10-21 5:41 ` Douglas Gilbert
2005-10-21 6:19 ` Jeff Garzik
2005-10-21 18:37 ` Luben Tuikov
2005-10-21 17:48 ` Luben Tuikov
2005-10-21 18:04 ` Christoph Hellwig
2005-10-21 18:12 ` Luben Tuikov
2005-10-21 18:20 ` Matthew Wilcox
2005-10-22 2:30 ` Douglas Gilbert
2005-10-22 2:54 ` Jeff Garzik
2005-10-22 3:53 ` Jeff Garzik
2005-10-22 17:14 ` Luben Tuikov
2005-10-22 17:49 ` Francois Romieu
2005-10-22 16:51 ` Luben Tuikov
2005-10-21 18:18 ` Jeff Garzik
2005-10-21 18:50 ` Luben Tuikov
2005-10-21 18:54 ` Jeff Garzik
2005-10-21 19:13 ` Luben Tuikov
2005-10-21 19:23 ` Jeff Garzik
2005-10-21 22:20 ` Stefan Richter
2005-10-21 19:22 ` Luben Tuikov
2005-10-21 19:39 ` Jeff Garzik
2005-10-21 20:41 ` Luben Tuikov
2005-10-21 21:12 ` Jeff Garzik
2005-10-21 21:24 ` Luben Tuikov
2005-10-21 21:41 ` Jeff Garzik
2005-10-21 22:14 ` Luben Tuikov
2005-10-21 22:43 ` Jeff Garzik
2005-10-22 9:26 ` Stefan Richter
2005-10-22 17:23 ` Luben Tuikov
2005-10-22 10:42 ` Stefan Richter
2005-10-22 10:58 ` Christoph Hellwig
2005-10-22 15:28 ` Sergey Panov
2005-10-22 17:19 ` Christoph Hellwig
2005-10-22 17:38 ` Sergey Panov
2005-10-24 15:18 ` Luben Tuikov
2005-10-22 18:27 ` Alan Cox
2005-10-24 13:51 ` Luben Tuikov
2005-10-24 15:41 ` Alan Cox
2005-10-24 15:14 ` Luben Tuikov
2005-10-24 16:03 ` Regala
2005-10-24 16:13 ` Luben Tuikov
2005-10-24 16:04 ` Regala
2005-10-22 17:30 ` Luben Tuikov
2005-10-22 18:19 ` Jeff Garzik
2005-10-22 17:49 ` Stefan Richter
2005-10-24 22:09 ` ioctls, etc. (was Re: [PATCH 1/4] sas: add flag for locally attachedPHYs) David Lang
2005-10-24 23:09 ` Stefan Richter
2005-10-22 11:12 ` David Lang
2005-10-22 17:39 ` Luben Tuikov
2005-10-22 17:41 ` Stefan Richter
2005-10-22 17:51 ` Christoph Hellwig
2005-10-22 18:21 ` Stefan Richter
2005-10-22 18:39 ` Sergey Panov
2005-10-22 13:27 ` ioctls, etc. (was Re: [PATCH 1/4] sas: add flag for locally attached PHYs) Stefan Richter
2005-10-22 16:09 ` Luben Tuikov
2005-10-21 19:41 ` Matthew Wilcox
2005-10-21 19:48 ` Luben Tuikov
2005-10-21 19:54 ` Matthew Wilcox
2005-10-21 20:05 ` Luben Tuikov
2005-10-21 19:46 ` Arjan van de Ven
2005-10-21 19:50 ` Luben Tuikov
2005-10-21 9:06 ` [PATCH 1/4] sas: add flag for locally attached PHYs Arjan van de Ven
2005-10-21 17:05 ` Andrew Patterson
2005-10-21 17:18 ` Arjan van de Ven
2005-10-21 18:57 ` Luben Tuikov
2005-10-21 17:32 ` Luben Tuikov
2005-10-21 1:50 ` Douglas Gilbert
2005-10-21 2:16 ` Jeff Garzik
2005-10-21 3:25 ` Douglas Gilbert [this message]
2005-10-21 18:04 ` Luben Tuikov
-- strict thread matches above, loose matches on Subject: below --
2005-10-20 15:45 Moore, Eric Dean
2005-10-20 16:16 ` Luben Tuikov
2005-10-19 20:08 Moore, Eric Dean
2005-10-19 21:00 ` Luben Tuikov
2005-10-20 14:11 ` Christoph Hellwig
2005-10-20 15:29 ` Luben Tuikov
2005-10-20 15:49 ` Christoph Hellwig
2005-10-20 16:08 ` Luben Tuikov
2005-10-19 18:01 Christoph Hellwig
2005-10-19 19:24 ` Luben Tuikov
2005-10-19 19:37 ` Luben Tuikov
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