[rrd-users] Problem converting 32 bit disk-rrd's to 64 bit

Hermann-Josef Beckers hj.beckers at kreis-steinfurt.de
Thu Oct 15 14:43:38 CEST 2009

New to this list. I posted this yesterday on the hobbit/xymon-users list, 
no solution so far: 


not exactly a hobbit problem, but as I am using rrd only with hobbit: 

I am converting my old hobbit/xymon server to a new one  Copying just the 
data/rrd directory 
results in the message "ERROR: This RRD was created on another 
So I used "rrdtool dump <file>.rrd > <file>.xml" on the old 
and "rrdtool restore  <file>.xml <file>.rrd -f" on the new server. Using 
the "--no-header" 
option to rrddump makes no difference. No error messages during the 
restore and no 
errors when I call the web pages. 

The new disk values in the rrd graphs are only 1/10 of the original size, 
e. g. a disk which is 
82 % filled, shows up with only  8 %.. The text lines generated from the 
client data are correct. 

Relevant data from the old server: 

rrdtool -v 
RRDtool 1.0.49  Copyright 1997-2004 by Tobias Oetiker <tobi at oetiker.ch> 
uname -a 
Linux ls0003.kreis-steinfurt.lokal #1 Fri Jan 14 03:01:00 
MST 2005 i686 Intel(R) Pentium(R) 4 CPU 2.40GHz unknown GNU/Linux 

Relevant data from the new server: 
rrdtool -v 
RRDtool 1.3.4  Copyright 1997-2008 by Tobias Oetiker <tobi at oetiker.ch> 
uname -a 
Linux lscopy02 #1 SMP 2009-03-31 14:50:44 +0200 x86_64 
x86_64 x86_64 GNU/Linux 

Screenshots of the old/new hobbit/xymon-webpages available on request (2x 
~120K pdfs) "

Following a hint from a hobbit user, I also tried to use a rrdtool in 
between the versions above:

dump with 1.0.49 on 32 bit, restore with 1.2.23 on 32 bit, dump with the 
same 1.2.23
on 32 bit, restore with 1.3.4 on 64 bit. No difference. And it effects all 
graphs, not only 
the disk graphs.

Any hints?

Any hints? 
Hermann-Josef Beckers 
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