linux-kernel - Re: [patch 0/4] [RFC] Another proportional weight IO controller

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Message-Id: <1225991487.7803.4801.camel@twins>
Date:	Thu, 06 Nov 2008 18:11:27 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Rik van Riel <riel@...hat.com>
Cc:	Vivek Goyal <vgoyal@...hat.com>, linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org,
	virtualization@...ts.linux-foundation.org, jens.axboe@...cle.com,
	Hirokazu Takahashi <taka@...inux.co.jp>,
	Ryo Tsuruta <ryov@...inux.co.jp>,
	Andrea Righi <righi.andrea@...il.com>,
	Satoshi UCHIDA <s-uchida@...jp.nec.com>,
	fernando@....ntt.co.jp, balbir@...ux.vnet.ibm.com,
	Andrew Morton <akpm@...ux-foundation.org>, menage@...gle.com,
	ngupta@...gle.com, Jeff Moyer <jmoyer@...hat.com>
Subject: Re: [patch 0/4] [RFC] Another proportional weight IO controller

On Thu, 2008-11-06 at 11:57 -0500, Rik van Riel wrote:
> Peter Zijlstra wrote:
> 
> > The only real issue I can see is with linear volumes, but those are
> > stupid anyway - non of the gains but all the risks.
> 
> Linear volumes may well be the most common ones.
> 
> People start out with the filesystems at a certain size,
> increasing onto a second (new) disk later, when more space
> is required.

Are they aware of how risky linear volumes are? I would discourage
anyone from using them.
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