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    SubjectRe: [PATCH v4] relatime: Make relatime smarter
    On Thu, Nov 27, 2008 at 03:08:39PM -0700, Andreas Dilger wrote:
    > On Nov 27, 2008 17:58 +0000, Matthew Garrett wrote:
    > > + relatime_interval=
    > > + [FS] relative atime update frequency, in seconds.
    > > + (default: 1 day: 86400 seconds)
    >
    > The one problem with a 1-day default is that cron jobs like updatedb will
    > revert to updating the atime on every single file every day. It would be
    > better to make it slightly more than 1 day (e.g. 25h) to avoid this and
    > at least defer atime updates to every other day for files that are not
    > otherwise accessed except by cron.

    Doesn't updatedb only access directories, not files? I don't think
    relatime implies nodiratime, but certainly the two could both be
    specified, and that would fix one of the updatedb problems. Are there
    any other common cronjobs you're concerned about?

    --
    Matthew Wilcox Intel Open Source Technology Centre
    "Bill, look, we understand that you're interested in selling us this
    operating system, but compare it to ours. We can't possibly take such
    a retrograde step."


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