From: James Bottomley <James.Bottomley@SteelEye.com>
To: Patrick Mansfield <patmans@us.ibm.com>
Cc: Douglas Gilbert <dougg@torque.net>,
Luben Tuikov <luben_tuikov@adaptec.com>,
ltuikov@yahoo.com,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: [PATCH 2.6.13 5/14] sas-class: sas_discover.c Discover process (end devices)
Date: Wed, 14 Sep 2005 14:47:59 -0400 [thread overview]
Message-ID: <1126723680.4588.9.camel@mulgrave> (raw)
In-Reply-To: <20050913224215.GB1308@us.ibm.com>
On Tue, 2005-09-13 at 15:42 -0700, Patrick Mansfield wrote:
> So adding a W_LUN at this point does not add any value ... maybe it looks
> nice in the spec and in someones firmware, but it does not add anything
> that I can see.
Well I agree with the analysis, but even given that, we have a linux
implementation problem: We have to get an inquiry response first before
we begin a report luns scan. An array implementing a W_LUN is entitled
not respond on LUN 0 to INQUIRY with an error, which would mean we don't
see it.
Therefore, I think our strategy has to be when the current probe fails
because of no LUN 0 try a report luns scan on the W_LUN anyway as long
as the transport indicates it is capable of supporting it (i.e. as long
as it has max_luns set at 0xffff or higher).
James
next prev parent reply other threads:[~2005-09-14 18:47 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-09 19:40 [PATCH 2.6.13 5/14] sas-class: sas_discover.c Discover process (end devices) Luben Tuikov
2005-09-09 19:59 ` Nish Aravamudan
2005-09-09 20:11 ` Luben Tuikov
2005-09-09 23:25 ` James Bottomley
2005-09-10 2:44 ` Luben Tuikov
2005-09-10 5:39 ` Douglas Gilbert
2005-09-10 16:01 ` James Bottomley
2005-09-12 15:06 ` Luben Tuikov
2005-09-12 16:27 ` Patrick Mansfield
2005-09-12 20:08 ` Luben Tuikov
2005-09-13 9:05 ` Douglas Gilbert
2005-09-13 13:11 ` Luben Tuikov
2005-09-13 22:42 ` Patrick Mansfield
2005-09-14 12:28 ` Luben Tuikov
2005-09-14 17:13 ` Patrick Mansfield
2005-09-14 17:17 ` Luben Tuikov
2005-09-14 18:47 ` James Bottomley [this message]
2005-09-14 20:20 ` Luben Tuikov
2005-09-12 17:52 ` James Bottomley
2005-09-12 20:31 ` Luben Tuikov
2005-09-12 21:23 ` James Bottomley
2005-09-13 12:49 ` Luben Tuikov
2005-09-13 15:54 ` James Bottomley
2005-09-13 20:01 ` Luben Tuikov
2005-09-11 9:46 ` Christoph Hellwig
2005-09-12 6:17 ` Douglas Gilbert
2005-09-12 14:57 ` James Bottomley
2005-09-12 16:45 ` Patrick Mansfield
2005-09-12 17:21 ` James Bottomley
2005-09-12 18:46 ` Patrick Mansfield
2005-09-13 19:22 ` James Bottomley
2005-09-13 20:23 ` Luben Tuikov
2005-09-13 20:36 ` Matthew Wilcox
2005-09-13 21:02 ` Luben Tuikov
2005-09-13 21:37 ` Stefan Richter
2005-09-13 21:54 ` Luben Tuikov
2005-09-13 22:25 ` Patrick Mansfield
2005-09-14 5:22 ` Sergey Panov
2005-09-14 16:28 ` Patrick Mansfield
2005-09-14 12:13 ` Luben Tuikov
2005-09-14 4:57 ` Sergey Panov
2005-09-14 18:43 ` James Bottomley
2005-09-14 20:17 ` Luben Tuikov
2005-09-15 2:04 ` Sergey Panov
2005-09-12 20:20 ` Luben Tuikov
2005-09-12 20:09 ` Luben Tuikov
2005-09-12 19:39 ` Luben Tuikov
2005-09-12 18:17 ` Luben Tuikov
2005-09-13 10:25 ` Christoph Hellwig
2005-09-13 12:47 ` Douglas Gilbert
2005-09-13 14:58 ` Luben Tuikov
2005-09-12 22:39 ` Luben Tuikov
-- strict thread matches above, loose matches on Subject: below --
2005-09-12 19:04 James.Smart
2005-09-12 19:04 ` James.Smart
2005-09-12 19:29 ` Patrick Mansfield
2005-09-12 19:53 James.Smart
2005-09-12 19:53 ` James.Smart
2005-09-14 0:58 Ravi Anand
2005-09-14 17:46 Ravi Anand
2005-09-16 7:28 Andreas Herrmann
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