[rrd-users] Re: confusing errors

Alex van den Bogaerdt alex at ergens.op.het.net
Fri May 20 17:40:58 MEST 2005

On Fri, May 20, 2005 at 11:23:41AM -0300, Natan wrote:
> I'm using rrdtool 1.26 for win32, and I think the error messages are too 
> cofusing and don't help at all.
> Consider this scenario: create a DEF, use it to create a VDEF, then use 
> the VDEF in GPRINT.
> if my DEF can't be read (e.g. no RRA matches CF), the error is "garbage 
> near GPRINT", making me think that my GPRINT is wrong.
> After reading the manual lots and lots of times, following examples and 
> recreating the command, I decided deleted the GRPRINT command and then 
> it said that there was an error near VDEF command, deleting it I found 
> out that I put the wrong RRA in DEF command.
> rrdtool certainly could tell me this error sooner....

I tried to reproduce this and failed.

What I did notice is this:  if you do something like:

rrdtool graph DEF:ds0=test.rrd:ds0:AVERAGE VDEF:m=ds0,MAXIMUM PRINT:m:%lf

then it produces an error:

ERROR: Not a valid vname: ds0 in line VDEF:m=ds0,MAXIMUM

It may not be clear that the "DEF" statement is actually the graph
file name.

Can you give an example line, as small as possible but one that still


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