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Re: noatime,nodiratime?

To: Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>
Subject: Re: noatime,nodiratime?
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Thu, 27 May 2010 09:18:42 +1000
Cc: xfs@xxxxxxxxxxx
In-reply-to: <4BF47859.6020808@xxxxxxxxxxxxxxxxx>
References: <4BF3F212.5030600@xxxxxxxxxxxxxxxxx> <20100519182336.GA6264@xxxxxxxxxxxxx> <4BF43B3C.6030403@xxxxxxxxxxxxxxxxx> <4BF44105.4040902@xxxxxxxxxxx> <4BF47859.6020808@xxxxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-06-14)
On Wed, May 19, 2010 at 06:46:33PM -0500, Stan Hoeppner wrote:
> Eric Sandeen put forth on 5/19/2010 2:50 PM:
> > xfs_info actually calls xfs_growfs -n, and it's only reporting on-disk
> > geometry.  I kind of doubt that'll change.  If you want to see mount
> > options, /proc/mounts is the place ... but then we don't show the
> > defaults ;)  I wonder if we should change that and be explicit about
> > every option in /proc/mounts *shrug*
> IMHO the option values should be listed, whether they are the defaults or
> user defined.  XFS may be breaking convention by doing so, as it appears
> EXT2 (and probably 3/4, and other filesystems) behave the same as XFS
> currently does--no display of default settings, except rw.
> > It's so hard to keep google up to date ;)
> Add the information to the FAQ and it'll show up in Google indexes in short
> order, assuming you allow robots to crawl xfs.org, which IIRC, you do.
> > /proc/mounts shows all mount options which were set differently from
> > defaults.
> Yes.  It would be nice to see the settings regardless of default or user
> defined.  In the absence of, or in addition to this, could we get a
> consistent (default) for each setting in XFS man mount?  For example,
> barrier is listed but we're not told if it's the default.  nobarrier isn't
> even in the man page, but it's on the wiki FAQ.  The wiki FAQ tells us that
> barrier is the default.  I'm referring to the man page that comes with
> Debian 5.0.  The current man page may be updated to reflect some of these
> things, though I've not read it yet.
> Sorry if I seem nit-picky.  I've spent many hours trying to hunt down some
> of this information and it's been a frustrating process.  XFS rocks.
> Currently, from here, the docs don't rock yet. :(

Patches to fix up the docs will be gratefully accepted. :)
Patches to change the output of /proc/mounts might take a little
more discussion....

Note that the man pages for mount are in the util-linux package, not
anything XFS...


Dave Chinner

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