[rrd-users] rrdtool doesn't always return proper status codes on error

[Chris Wilson]

Hi all,

rrdtool does not always exit with a return code greater than 0 when
there is a problem with its command line. For example:

[chris at dev chris]$ /usr/bin/rrdtool create /foo/bar.rrd --start
1112784412 DS:battery_voltage:GAUGE:600:U:U
DS:input_frequency:GAUGE:600:U:U DS:input_voltage:GAUGE:600:U:U
DS:input_voltage.minim:GAUGE:600:U:U
DS:input_voltage_maximum:GAUGE:600:U:U DS:ups_load:GAUGE:600:U:U
RRA:AVERAGE:0.5:1:600 RRA:AVERAGE:0.5:6:700 RRA:AVERAGE:0.5:24:775
RRA:AVERAGE:0.5:288:797
ERROR: can't parse argument 'DS:input_voltage.minim:GAUGE:600:U:U'

[chris at dev chris]$ echo $?
0

The output error message could also be more useful. I had to use trial
and error to find out that the maximum length of a variable name was 19
characters and that dots (.) were not allowed.

Cheers, Chris.
-- 
(aidworld) chris wilson | chief engineer (chris at aidworld.org)

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