linux-kernel - sysfs makes scaling suck Re: Asynchronous scsi scanning

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Message-ID: <20070517173238.GA30571@kvack.org>
Date:	Thu, 17 May 2007 13:32:38 -0400
From:	Benjamin LaHaise <bcrl@...ck.org>
To:	Satyam Sharma <satyam.sharma@...il.com>
Cc:	Matthew Wilcox <matthew@....cx>, Simon Arlott <simon@...e.lp0.eu>,
	James Bottomley <james.bottomley@...eleye.com>,
	Dave Jones <davej@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-scsi@...r.kernel.org, kernel-packagers@...r.kernel.org,
	"Robert P. J. Day" <rpjday@...dspring.com>
Subject: sysfs makes scaling suck Re: Asynchronous scsi scanning

On Wed, May 16, 2007 at 04:57:52AM +0530, Satyam Sharma wrote:
> 
> echo 1 > /sys/module/scsi_mod/.../wait_for_async_scans
> 
> somewhere in some script. In fact, the latter method seems simpler,
> saner, better (in every which way)!

Please don't force sysfs on people.  Just watch how it keels over and dies 
when you end up with lots of disks/network interfaces on reasonably sized 
boxes.  16 statically allocated files per network interface starts being 
a problem once you've got a few thousand interfaces.  Anything that forces 
me to use sysfs is not gonna fly.

		-ben
-- 
"Time is of no importance, Mr. President, only life is important."
Don't Email: <zyntrop@...ck.org>.
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