From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261648AbUDIBtT (ORCPT ); Thu, 8 Apr 2004 21:49:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261792AbUDIBtT (ORCPT ); Thu, 8 Apr 2004 21:49:19 -0400 Received: from [159.226.248.195] ([159.226.248.195]:52195 "EHLO dns.sinosoft.com.cn") by vger.kernel.org with ESMTP id S261648AbUDIBtP (ORCPT ); Thu, 8 Apr 2004 21:49:15 -0400 Message-ID: <40760145.5030109@sinosoft.com.cn> Date: Fri, 09 Apr 2004 09:49:57 +0800 From: Gewj User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; zh-CN; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: zh-cn MIME-Version: 1.0 To: Neil Brown CC: Lars Marowsky-Bree , linux-kernel@vger.kernel.org Subject: Re: A puzzling thing about RAID5: syslogd write the log success but another process can not read the /var/log/messages References: <407400F1.8090809@sinosoft.com.cn> <20040407145126.GA23517@marowsky-bree.de> <16500.35602.13336.290506@cse.unsw.edu.au> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org thank for your comments I should say that this question maybe end up without any reasonable result, the system is now work well , I have give up investigating this problem any more. maybe the question is just cause by the RAID card crash. Neil Brown wrote: >On Wednesday April 7, lmb@suse.de wrote: > > >>On 2004-04-07T21:24:01, >> Gewj said: >> >> >> >>>hammm,tonight is funny because I got a puzzling thing just as.... >>> >>>my setup is a two-scsi-disk raid5 configuration... >>> >>> >>Impossible. RAID5 requires at least three disks. >> >> > >Wrong. RAID5 works fine with just two drives. Try it. > >NeilBrown > >(I admit that there isn't a lot of point doing raid5 with two drives >as raid1 should provide identical functionality with better >performance, but it makes an interesting base-line for performances >tests on N-drive arrays). > >- >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >the body of a message to majordomo@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html >Please read the FAQ at http://www.tux.org/lkml/ > > >