From: Christoph Hellwig <hch@infradead.org>
To: Luben Tuikov <luben_tuikov@adaptec.com>
Cc: Christoph Hellwig <hch@infradead.org>,
SCSI Mailing List <linux-scsi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
andrew.patterson@hp.com, Eric.Moore@lsil.com, mike.miller@hp.com,
dougg@torque.net, Madhuresh_Nagshain@adaptec.com
Subject: Re: [RFC] SAS domain layout for Linux sysfs
Date: Mon, 25 Apr 2005 19:18:31 +0100 [thread overview]
Message-ID: <20050425181831.GA14190@infradead.org> (raw)
In-Reply-To: <426D2723.8070308@adaptec.com>
On Mon, Apr 25, 2005 at 01:21:39PM -0400, Luben Tuikov wrote:
> You're are stating that:
> 1) You "only ever care about what's seen from a HA",
> 2) "if you have muliple SPI cards that are on a single parallel
> bus you'll have the same bus represented twice"
> 3) "we have a scsi_device object for every lun
> that's seen from a hba, linked to the HBAs Scsi_Host object
> and not one shared by multiple HBAs"
>
> So in effect, you _want_ duplication, right? This is perfectly OK.
> In fact it is desirable (and has never been under question).
Yes.
> This isn't directly related to the RFC. The RFC basically
> outlines the result of *a SAS discovery process*. The discovery
> process/LLDD can register the LU many times. This has *never* been an
> issue of discussion.
The point is that discovery must happen for each HBA separately because
we absolutely do not want to have global state.
next prev parent reply other threads:[~2005-04-25 18:18 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-13 15:22 [RFC] SAS domain layout for Linux sysfs Luben Tuikov
2005-04-24 11:19 ` Christoph Hellwig
2005-04-25 16:06 ` Luben Tuikov
2005-04-25 16:14 ` Christoph Hellwig
2005-04-25 17:21 ` Luben Tuikov
2005-04-25 18:18 ` Christoph Hellwig [this message]
2005-04-26 15:18 ` Luben Tuikov
2005-04-27 12:34 ` Douglas Gilbert
2005-04-27 15:38 ` Luben Tuikov
2005-04-29 10:08 ` Christoph Hellwig
2005-05-02 14:35 ` Luben Tuikov
2005-04-29 10:05 ` Christoph Hellwig
2005-05-02 14:30 ` Luben Tuikov
-- strict thread matches above, loose matches on Subject: below --
2005-04-27 14:54 Martin Peschke3
2005-04-27 15:52 ` Luben Tuikov
2005-04-27 18:57 ` David S. Miller
2005-04-29 10:11 ` Christoph Hellwig
2005-06-01 21:49 Moore, Eric Dean
2005-06-02 14:32 Miller, Mike (OS Dev)
2005-06-02 14:57 ` Luben Tuikov
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