[rrd-users] rrdupdate with UNKNOWN and 0 value

[ralf-buero at kruedewagen.de]

Hi,

I have a strange problem when updating (v1.2.10) my rrd database with 
an UNKNOWN value combined with a 0 value.

Situation: My database has two DS, both from type GAUGE, step 900 (15 
min.) , heartbeat 3600 (60 min).

Problem: When I update the database with "rrdupdate <file> N:U:0", the 
database is storing 0 values for both DS. But I would like to store 
an UNKNOWN value for DS1 and a 0 value for DS2.

I am quite sure that this problem does not occur with rrd_version=0001 
databases. My "problem-database" has been created with a later rrd 
version "rrd_version=0003".

Any idea ? How to avoid storing a 0 value when UNKNOWN is wanted ?

Cheers
Ralf

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