From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q1DNfWsX051654 for ; Mon, 13 Feb 2012 17:41:33 -0600 Received: from ipmail07.adl2.internode.on.net (ipmail07.adl2.internode.on.net [150.101.137.131]) by cuda.sgi.com with ESMTP id bnhT67t76G6lQMsz for ; Mon, 13 Feb 2012 15:41:31 -0800 (PST) Date: Tue, 14 Feb 2012 10:41:29 +1100 From: Dave Chinner Subject: Re: Disk spin down Message-ID: <20120213234129.GD14132@dastard> References: <4F3803B1.1090205@ashurst.eu.org> <20120213083651.GA40007@nsrc.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20120213083651.GA40007@nsrc.org> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Brian Candler Cc: Andy Bennett , xfs@oss.sgi.com On Mon, Feb 13, 2012 at 08:36:51AM +0000, Brian Candler wrote: > On Sun, Feb 12, 2012 at 06:23:45PM +0000, Andy Bennett wrote: > > Can someone help me work out where writes are coming from on my system? > > Is the filesystem in question mounted with 'relatime' or 'noatime'? > Otherwise, merely reading a file will cause its inode to be dirtied. > > (However in modern kernels, 'relatime' might be the default, I'm not sure) relatime has been the default for quite some time, and even before relatime was implemented in the VFS, xfs implementated atime updates in a manner almost indistinguishable from relatime since about 2007.... Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs