From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753598Ab1HAJpK (ORCPT ); Mon, 1 Aug 2011 05:45:10 -0400 Received: from TYO200.gate.nec.co.jp ([202.32.8.215]:34479 "EHLO tyo200.gate.nec.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752092Ab1HAJpH (ORCPT ); Mon, 1 Aug 2011 05:45:07 -0400 Message-ID: <4E367256.8020206@ct.jp.nec.com> Date: Mon, 01 Aug 2011 18:31:02 +0900 From: Kiyoshi Ueda User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: Lukas Hejtmanek CC: "Jun'ichi Nomura" , agk@redhat.com, linux-kernel@vger.kernel.org Subject: Re: request baset device mapper in Linux References: <20110720082640.GZ7561@ics.muni.cz> <4E280964.6070000@ct.jp.nec.com> <20110721132627.GY7561@ics.muni.cz> <4E291F28.2040609@ct.jp.nec.com> <20110722081903.GB7561@ics.muni.cz> <4E2A7806.1060601@ce.jp.nec.com> <20110724221619.GM16487@ics.muni.cz> In-Reply-To: <20110724221619.GM16487@ics.muni.cz> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Lukas, Lukas Hejtmanek wrote: > On Sat, Jul 23, 2011 at 04:28:06PM +0900, Jun'ichi Nomura wrote: >> As Kiyoshi suggested, it is important to know whether this >> problem occurs with the latest kernel. >> So if you could try 3.0, it would be very helpful. > > so, do I need to check recent kernel as the patch works for me? Yes, please. (Unfortunately my storage has been broken today :-<) CPU usage seems to be one of the reasons for your case, but I still cannot understand why memory pressure is needed. I want to know your problem also occurs on 3.0 without the patch. Thanks, Kiyoshi Ueda