[rrd-users] Strange problem: data not updated?

Julf julf at julf.com
Fri Jul 25 15:43:55 CEST 2014


I have a very strange issue that I just can't figure out. I have a simple
program that tries to update some temperature readings. These are some of 
the calls to rddupdate:

<code>
Jul 25 15:05:39 rrdtool updatev rfx-tmp.rrd -t livingroom 1406293539:21.75
Jul 25 15:08:46 rrdtool updatev rfx-tmp.rrd -t livingroom 1406293726:22.0
Jul 25 15:09:50 rrdtool updatev rfx-tmp.rrd -t livingroom 1406293790:21.87
Jul 25 15:13:49 rrdtool updatev rfx-tmp.rrd -t library 1406294029:20.37
Jul 25 15:15:47 rrdtool updatev rfx-tmp.rrd -t library 1406294147:20.5
Jul 25 15:18:42 rrdtool updatev rfx-tmp.rrd -t office 1406294322:22.12
Jul 25 15:22:44 rrdtool updatev rfx-tmp.rrd -t office 1406294564:21.87
Jul 25 15:23:44 rrdtool updatev rfx-tmp.rrd -t office 1406294624:22.0
Jul 25 15:24:35 rrdtool updatev rfx-tmp.rrd -t library 1406294675:20.37
Jul 25 15:26:34 rrdtool updatev rfx-tmp.rrd -t library 1406294793:20.5
Jul 25 15:29:03 rrdtool updatev rfx-tmp.rrd -t attic 1406294943:22.12
Jul 25 15:29:30 rrdtool updatev rfx-tmp.rrd -t library 1406294970:20.37
Jul 25 15:30:29 rrdtool updatev rfx-tmp.rrd -t library 1406295029:20.5
Jul 25 15:31:28 rrdtool updatev rfx-tmp.rrd -t library 1406295088:20.37
Jul 25 15:32:27 rrdtool updatev rfx-tmp.rrd -t library 1406295147:20.5
</code>

The strange thing is that even using updatev, I don't get any output, only a
return status of "0". 

Looking at the rrd file there is nothing there:

<code>
rrdtool fetch rfx-tmp.rrd AVERAGE -s -1d 
                      office             library               attic         
livingroom            3rdfloor            neighbor

1406210400: -nan -nan -nan -nan -nan -nan
1406214000: -nan -nan -nan -nan -nan -nan
1406217600: -nan -nan -nan -nan -nan -nan
1406221200: -nan -nan -nan -nan -nan -nan
1406224800: -nan -nan -nan -nan -nan -nan
1406228400: -nan -nan -nan -nan -nan -nan
1406232000: -nan -nan -nan -nan -nan -nan
1406235600: -nan -nan -nan -nan -nan -nan
1406239200: -nan -nan -nan -nan -nan -nan
1406242800: -nan -nan -nan -nan -nan -nan
1406246400: -nan -nan -nan -nan -nan -nan
1406250000: -nan -nan -nan -nan -nan -nan
1406253600: -nan -nan -nan -nan -nan -nan
1406257200: -nan -nan -nan -nan -nan -nan
1406260800: -nan -nan -nan -nan -nan -nan
1406264400: -nan -nan -nan -nan -nan -nan
1406268000: -nan -nan -nan -nan -nan -nan
1406271600: -nan -nan -nan -nan -nan -nan
1406275200: -nan -nan -nan -nan -nan -nan
1406278800: -nan -nan -nan -nan -nan -nan
1406282400: -nan -nan -nan -nan -nan -nan
1406286000: -nan -nan -nan -nan -nan -nan
1406289600: -nan -nan -nan -nan -nan -nan
1406293200: -nan -nan -nan -nan -nan -nan
1406296800: -nan -nan -nan -nan -nan -nan
</code>

Any ideas/suggestions?




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