graph problems

[Gianluca Rossi <grossi (at) acantho.net>]

Hello,
I have just copied my old big brother data files (history and rrd) to a 
new hobbit 4.0.4 installation, it seems to work well except some 
problems with rrd file:


- on all linux client the vmstat graph was empty, and the error message
was:
/dati/hobbit/data/rrd/blu/vmstat.rrd from 127.0.0.1: unknown DS name 'cpu_w'
i have deleted the bigbrother vmstat.rrd, and the new one is correct.



- on all AIX, linux and solaris client the netstat is empty. if i delete 
the rrd file, it is recreated on aix and linux (still empty however), 
but not for solaris.

the log for linux machine:
larrd-status.log:2005-07-06 14:39:34 RRD error updating 
/dati/hobbit/data/rrd/blu/netstat.rrd from 127.0.0.1: expected 13 data 
source readings (got 16) from 
1120653574:102891:105479:0:17502925:398003:0:18201:0:U:U:U:U:40401904:26965995:U:453087:...

for solaris machine:

larrd-status.log:2005-07-06 14:42:09 RRD error updating 
/dati/hobbit/data/rrd/siebdbp/netstat.rrd from 127.0.0.1: expected 13 
data sourcereadings (got 16) from 
1120653729:4598699:4703299:0:917679:661345:601878:56101:429:3557031050:4281072706:1677389:801734229:2140806543:1738905102:1990:591967:...


- on all windows client, the "memory" graph is always zero (not empty).

how can i debug this situation?

thanx
--
Gianluca