(SOLVED [maybe]) Re: What is removing files from /tmp?

[deanm@xxxxxxxxxxxxx (Dean S. Messing)]

On Thu, 3 May 2012 at 11:34:03, Michael Schwendt wrote:
> On Wed, 02 May 2012 19:47:03 -0700, DSM (Dean) wrote:
> 
> > 
> > I'm running F15.  Files are mysteriously being removed from /tmp after a
> > number of days of not being touched.  I am familiar with
> > /etc/cron.daily/tmpwatch and, in fact, modify it to inhibit removal of
> > files from /tmp.  In the past this has worked. Under F15 it has not.
> > 
> > Two or three weeks ago I deleted it from /etc/cron.daily but older files
> > _still_ get removed from /tmp. I've rebooted at least once.  I'm not
> > sure if it happens at bootup or while the system is running, but
> > something is still removing files from /tmp.
> > 
> > Does anyone know of another mechanism for this?
> 
> At least with recent systemd versions, there is the systemd-tmpfiles-clean
> service. Dunno whether it's available in F15. And it defaults to 10 days
> not 14, I think: "man tmpfiles.d"

Sorry for not responding till now.  I'm traveling and away from the
offending system.  But I do believe that you have found the culprit.
I just remotely logged onto my F15 system at work and found

 /usr/lib/tmpfiles.d/systemd.conf

which contains this line:

  d /tmp 1777 root root 10d


Knowing NOTHING about "systemd" or this file format (yet), I'm taking
the wild guess that the initial "d" stands for "delete".  I will read up
on this stuff, and verify that it is the cause.  (Which raises the
question: why does F15 contains two independent mechanisms for cleaning
/tmp.  Seems like a bug to me.)

I also want to give credit to David Hawes, who wrote me privately this
morning and suggested the same solution as Michael. I just saw his
e-mail. Many thanks to both of you for pointing me in the right
direction!  I can't verify now, but my gut tells me this is IT.

Time to head to my flight.

Dean
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