linux-kernel - Re: [PATCH 1 of 1] cciss: add procfs interface to rescan logical volumes

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Message-ID: <20081007093530.1793a81b@infradead.org>
Date:	Tue, 7 Oct 2008 09:35:30 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Mike Miller <mike.miller@...com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	JensAxboejens.axboe@...cle.com,
	LKML <linux-kernel@...r.kernel.org>,
	LKML-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH 1 of 1] cciss: add procfs interface to rescan logical
 volumes

On Tue, 7 Oct 2008 11:24:54 -0500
Mike Miller <mike.miller@...com> wrote:

> Patch 1 of 1
> 
> This patch adds a procfs interface so users can force a rescan of the
> logical volumes attached to the controller. A new product uses Target
> Based Management (TBM) out-of-band for configuration purposes. With
> this method the driver has no way of knowing that something has
> changed, i.e., new logical volume(s) added or existing volumes
> deleted. This interface allows the user to echo "rescan volumes" >
> /proc/driver/cciss/ccissN to force the driver to rebuild our table of
> logical volumes. 
> Please consider this patch for inclusion.


I'll ask the obvious question (since you didn't address this)...
why is this a proc thing and not just a sysfs attribute of the device?


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
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visit http://www.lesswatts.org
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