From: Dave Chinner <david@fromorbit.com>
To: Brian Candler <B.Candler@pobox.com>
Cc: Andy Bennett <andyjpb@ashurst.eu.org>, xfs@oss.sgi.com
Subject: Re: Disk spin down
Date: Tue, 14 Feb 2012 10:41:29 +1100 [thread overview]
Message-ID: <20120213234129.GD14132@dastard> (raw)
In-Reply-To: <20120213083651.GA40007@nsrc.org>
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
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prev parent reply other threads:[~2012-02-13 23:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-12 18:23 Disk spin down Andy Bennett
2012-02-12 20:06 ` Dave Chinner
2012-02-12 21:15 ` Andy Bennett
2012-02-12 21:28 ` Andy Bennett
2012-02-12 22:35 ` Dave Chinner
2012-02-12 22:57 ` Andy Bennett
2012-02-13 8:36 ` Brian Candler
2012-02-13 23:41 ` Dave Chinner [this message]
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