From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Mason Subject: Re: how do versioning filesystems take snapshot of opened files? Date: Tue, 3 Jul 2007 13:04:36 -0400 Message-ID: <20070703130436.4a2f2b2c@think.oraclecorp.com> References: <20070703090946.49e6062f@think.oraclecorp.com> <4ae3c140707030931u14119061m5d5dc69834292847@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: "Bryan Henderson" , linux-fsdevel To: "Xin Zhao" Return-path: Received: from agminet01.oracle.com ([141.146.126.228]:57795 "EHLO agminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753911AbXGCRFE (ORCPT ); Tue, 3 Jul 2007 13:05:04 -0400 In-Reply-To: <4ae3c140707030931u14119061m5d5dc69834292847@mail.gmail.com> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Tue, 3 Jul 2007 12:31:49 -0400 "Xin Zhao" wrote: > That's a good point! > > But this sounds hopeless to take a real consistent snapshot from app > perspective unless you shutdown the computer. Right? Many different applications support some form of pausing in order to facilitate live backups. You just have to keep it all in mind when designing the total backup solution. -chris