[rrd-users] rrdtool restore trouble with min/max

[Michael Kluge]

Hi list,

I am trying to migrate a couple of rrd files between two architectures. 

"info" on the first machine shows:
mkluge at lustremon:~/klotzsche> rrdtool info /rrd/databases/klotzsche.rrd
filename = "/rrd/databases/klotzsche.rrd"
rrd_version = "0003"
step = 300
last_update = 1322210401
ds[KLOTZSCHE].type = "GAUGE"
ds[KLOTZSCHE].minimal_heartbeat = 600
ds[KLOTZSCHE].min = -5,0000000000e+01
ds[KLOTZSCHE].max = 1,0000000000e+02

min is -50 and max is 100.

Running "dump" on the first machine (RRDtool 1.3.0) creates an XML file which 
contains:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE rrd SYSTEM "http://oss.oetiker.ch/rrdtool/rrdtool.dtd">
<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>
        <step> 300 </step> <!-- Seconds -->
        <lastupdate> 1322211601 </lastupdate> <!-- 2011-11-25 10:00:01 CET -->

        <ds>
                <name> KLOTZSCHE </name>
                <type> GAUGE </type>
                <minimal_heartbeat> 600 </minimal_heartbeat>
                <min> -5,0000000000e+01 </min>
                <max> 1,0000000000e+02 </max>

So this looks good. After copying the file and running "restore -f" on the new 
machine (RRDtool 1.4.3), I have a rrd database where "info" says:

rrd at dataheap:~$ rrdtool info /db/rrd/databases/klotzsche.rrd 
filename = "/db/rrd/databases/klotzsche.rrd"
rrd_version = "0003"
step = 300
last_update = 1322210401
header_size = 592
ds[KLOTZSCHE].index = 0
ds[KLOTZSCHE].type = "GAUGE"
ds[KLOTZSCHE].minimal_heartbeat = 600
ds[KLOTZSCHE].min = -5,0000000000e+00
ds[KLOTZSCHE].max = 1,0000000000e+00

So the min/max values from the rrd definition do not get restored correctly. Is 
this a bug or did I made a mistake? On both machines I have: LANG=de_DE.UTF-8


Regards, Michael

-- 

Dr.-Ing. Michael Kluge

Technische Universität Dresden
Center for Information Services and
High Performance Computing (ZIH)
D-01062 Dresden
Germany

Contact:
Willersbau, Room A 208
Phone:  (+49) 351 463-34217
Fax:    (+49) 351 463-37773
e-mail: michael.kluge at tu-dresden.de
WWW:    http://www.tu-dresden.de/zih