From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gordon Messmer Subject: Re: kernel panic using external journal and snapshots Date: Sat, 23 Nov 2013 12:30:48 -0800 Message-ID: <52911078.40207@gmail.com> References: <5281A8A3.80604@gmail.com> <20131122071145.GA5936@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: linux-ext4@vger.kernel.org Return-path: Received: from mail-pb0-f50.google.com ([209.85.160.50]:44683 "EHLO mail-pb0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756274Ab3KWUb4 (ORCPT ); Sat, 23 Nov 2013 15:31:56 -0500 Received: by mail-pb0-f50.google.com with SMTP id rr13so3146171pbb.37 for ; Sat, 23 Nov 2013 12:31:56 -0800 (PST) Received: from ascension.private.dragonsdawn.net (50-199-12-33-static.hfc.comcastbusiness.net. [50.199.12.33]) by mx.google.com with ESMTPSA id at4sm62112974pbc.30.2013.11.23.12.31.54 for (version=TLSv1.1 cipher=RC4-SHA bits=128/128); Sat, 23 Nov 2013 12:31:55 -0800 (PST) In-Reply-To: <20131122071145.GA5936@gmail.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On 11/21/2013 11:11 PM, Zheng Liu wrote: > For the first question, I haven't a LVM device on my hand. Hence I am > not sure whether there is a bug or not. > > For the second one, I do a test on my sand box against Linux-3.12-rc5, > and it works well. So I think maybe you can try it again on a newer > kernel. The problem manifests when a filesystem which uses external journal and its snapshot are simultaneously mounted. If you don't have an LVM device with which to create a snapshot, I'm not sure what you're testing. Could you clarify?