[rrd-users] 1.3b and timestamps

[Tobias Oetiker]

Hi Fabien,

look at this ...

http://lkml.org/lkml/2007/1/9/310

it seems to be a kernel bug ...

cheers
tobi

Today Fabien Wernli wrote:

> On Wed, Oct 31, 2007 at 01:27:03AM +0100, Tobias Oetiker wrote:
> > I don't think it has todo with noatime ... it is the mtime which
> > does not get updated, right ? I have seen the same happening with
> > samba database files ...
>
> I know - and yes, the atime _is_ being modified. It's the mtime which stays
> the same. Just to rule out anything on my side, can anyone reproduce this
> behaviour?
>
> > now I could add code to rrdtool which forces a timestamp update,
> > but then again, this would cause additional disk io, which is
> > probably not what we want ...
>
> yeah. If this is "normal" mmap behaviour, I'll modify my own code to touch
> the mtime
>
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Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten
http://it.oetiker.ch tobi at oetiker.ch ++41 62 213 9902