Message-ID: <491321ED.5010103@redhat.com>
Date: Thu, 06 Nov 2008 11:57:17 -0500
From: Rik van Riel <riel@redhat.com>
Organization: Red Hat, Inc
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To: Peter Zijlstra <peterz@infradead.org>
CC: Vivek Goyal <vgoyal@redhat.com>, linux-kernel@vger.kernel.org,
       containers@lists.linux-foundation.org,
       virtualization@lists.linux-foundation.org, jens.axboe@oracle.com,
       Hirokazu Takahashi <taka@valinux.co.jp>,
       Ryo Tsuruta <ryov@valinux.co.jp>, Andrea Righi <righi.andrea@gmail.com>,
       Satoshi UCHIDA <s-uchida@ap.jp.nec.com>, fernando@oss.ntt.co.jp,
       balbir@linux.vnet.ibm.com, Andrew Morton <akpm@linux-foundation.org>,
       menage@google.com, ngupta@google.com, Jeff Moyer <jmoyer@redhat.com>
Subject: Re: [patch 0/4] [RFC] Another proportional weight IO controller
References: <20081106153022.215696930@redhat.com>	 <1225986593.7803.4688.camel@twins> <20081106160154.GA7461@redhat.com>	 <1225988173.7803.4723.camel@twins>  <20081106163957.GB7461@redhat.com> <1225990327.7803.4776.camel@twins>
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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.

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