From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Thu, 20 Jul 2006 02:44:19 -0700 (PDT) Received: from mondschein.lichtvoll.de (ms1.lichtvoll.de [194.150.191.234]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id k6K9i6DW030403 for ; Thu, 20 Jul 2006 02:44:09 -0700 Received: from localhost (dslb-084-056-078-084.pools.arcor-ip.net [84.56.78.84]) by mondschein.lichtvoll.de (Postfix) with ESMTP id B6A0EFA8A6 for ; Thu, 20 Jul 2006 11:41:10 +0200 (CEST) From: Martin Steigerwald Subject: How does XFS handle file data with regards to journaling? Date: Thu, 20 Jul 2006 11:43:40 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200607201143.40984.Martin@lichtvoll.de> Sender: xfs-bounce@oss.sgi.com Errors-To: xfs-bounce@oss.sgi.com List-Id: xfs To: linux-xfs@oss.sgi.com Hello, AFAIK XFS does not support real data journaling. But when does it write changes to file data? Does ist write it before or after it updates the journal? IOW does it support ordered writes as ext3 does? data=ordered (*) All data are forced directly out to the main file system prior to its metadata being committed to the journal. Or does it work in writeback mode? data=writeback Data ordering is not preserved, data may be written into the main file system after its metadata has been committed to the journal. Regards, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7