CDEFs Error

[dumoyi]

First of all I'm sorry for my poor english

i've just upgraded cacti 0.8.7a -> 0.8.7c
then i got a problem with graph that using special CDEFs.

It;s a Debug Log
##############################################
RRDTool Command:

/usr/local/rrdtool/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title="Total - Traffic" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="bits per second" \
DEF:a="/xxx/rra/traffic_in_9.rrd":traffic_in:AVERAGE \
DEF:b="/xxx/rra/traffic_in_8.rrd":traffic_in:AVERAGE \
DEF:c="/xxx/rra/traffic_in_8.rrd":traffic_out:AVERAGE \
DEF:d="/xxx/rra/traffic_in_9.rrd":traffic_out:AVERAGE \
CDEF:cdefa=,8,* \
CDEF:cdefb=,8,* \
CDEF:cdeff=,8,* \
CDEF:cdefg=,8,* \
AREA:cdefa#00CF00:"" \
AREA:cdefb#00CF00:"Total_IN" \
GPRINT:cdefb:LAST:" Current\:%8.2lf %s" \
GPRINT:cdefb:AVERAGE:"Average\:%8.2lf %s" \
GPRINT:cdefb:MAX:"Maximum\:%8.2lf %s\n" \
LINE1:cdeff:"" \
LINE1:cdefg#0D006A:"Total_OUT" \
GPRINT:cdefg:LAST:"Current\:%8.2lf %s" \
GPRINT:cdefg:AVERAGE:"Average\:%8.2lf %s" \
GPRINT:cdefg:MAX:"Maximum\:%8.2lf %s\n"
RRDTool Says:

ERROR: invalid rpn expression ',8,*'
#############################################

My Special CDEFs is....Looks like a included image

It works very well with no problem in cacti-0.8.7a but make problem with 0.8.7c....T.T
how can I fix it? Please Help....

[gandalf]

I suppose CURRENT_DATA_SOURCE would be recommended as a specific data source
Reinhard

[dumoyi]

I suppose CURRENT_DATA_SOURCE would be recommended as a specific data source
Reinhard

Thanks for your suppose gandalf...
I've change like change.jpg

then graph was shown but data wasn't correct...like total-test.jpg

and graph's In and Out was strange too...T.T

i want to show the graph source01.jpg + source02 in 1 graph.

It was work well in cacti 0.8.7a....
It was not working after upgrade cacti to 0.8.7c.....T.T

0.8.7a.jpg is graph in cacti-0.8.7a (same source)

[gandalf]

Ok, I'm sorry for mis-reading the first time.
For aggregation, indeed SIMILAR... is correct.
And there is a known bug with 087c related to this. In some environments (not here, unfortunately) this pseudo data source is not computed correctly.

There's bug 1392 related to this. still in the works
Reinhard