From: Zheng Liu Subject: Re: xfstest failure: #68, with data=journal Date: Fri, 22 Mar 2013 22:06:28 +0800 Message-ID: <20130322140628.GA2770@gmail.com> References: <20130321221218.GA3349@wallace> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Theodore Ts'o , linux-ext4@vger.kernel.org To: Eric Whitney Return-path: Received: from mail-da0-f44.google.com ([209.85.210.44]:43690 "EHLO mail-da0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753963Ab3CVNuy (ORCPT ); Fri, 22 Mar 2013 09:50:54 -0400 Received: by mail-da0-f44.google.com with SMTP id z20so2280517dae.17 for ; Fri, 22 Mar 2013 06:50:53 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20130321221218.GA3349@wallace> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Thu, Mar 21, 2013 at 06:12:18PM -0400, Eric Whitney wrote: [snip] > We were giving this one some attention in late February on the mailing list, > but I don't think a full solution was found. Here's a pointer to Jan Kara's > analysis: > > http://www.spinics.net/lists/linux-ext4/msg36858.html > > Back then, it typically took a number of runs to see this problem. What I was thinking about this problem is that ext4_file_dio_write() is missing protection. Look at this link, please [1]. But, after fixing it, I still can hit a bug. So I believe that more than one bug are here. 1. http://www.spinics.net/lists/linux-ext4/msg37267.html Regards, - Zheng