[collectd] rrd_update failed with identical timestamp

[Florian Forster]

Hi Adrian,

On Thu, Apr 12, 2007 at 10:40:40AM +0200, Adrian Immler wrote:
> Apr 12 10:33:43 XXXX collectd[16757]: rrd_update failed: df-dev.rrd:
> illegal attempt to update using time 1176366823 when last update time
> is 1176366823 (minimum one second step)

the good news is: I can reproduce the error. The problem is this:
-- 8< --
 octo.trailing-username(a)leading-domain.tricia:~ $ df | grep dev$
 devfs                          180      180        0   100%    /dev
 fdesc                            2        2        0   100%    /dev
-- >8 --
For whatever reason Mac OS X has two filesystems mounted on /dev, thus the
RRD-file is updated twice in each turn. Since graphs of the dev-
filesystem are hardly informational you can savely let collectd ignore
them:
-- 8< --
 <Plugin df>
   MountPoint "/dev"
   IgnoreSelected true
 </Plugin>
-- >8 --

Regards,
-octo
-- 
Florian octo Forster
Hacker in training
GnuPG: 0x91523C3D
http://verplant.org/
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