From: Greg Redder <redder@yuma.ACNS.ColoState.EDU>
Jeff, et al,
I had a problem running RRD 1.0.0 on AIX 4.3.2 with Cricket .69
whereby the code would not update any of its data files
and gave the error:
Cannot update
/home/cricket/cricket-config/../cricket-data//routers/router-name.rrd:
rrdopen can't open 'dummy'
I recently upgraded to rrd1.0.4 and cricket .70. I have the
same problem ;-( I was using a router subtree with one
router defined. I thought maybe that tree was corrupt, so I
decided to use the router-interfaces subtree with just two
interfaces. I get the same problem no matter what. I didn't
receive any response on this last plea so I'm hoping someone
has seen this behavior before and can help me narrow it down.
Here are more details:
Cricket's collector code calls:
RRDs::update($datafile, join(":", $when, @data2));
and gets the error:
Cannot update
/home/cricket/cricket-config/../cricket-data//routers/router-name.rrd:
rrdopen can't open 'dummy'
It's the "can't open 'dummy'" that is confusing me and preventing
things from working properly.
If I print out the variables passed to RRDs::update, I get:
$datafile =
/home/cricket/cricket-config/../cricket-data//routers/router-name.rrd
$when=N
@data2=1 1 28 36 3941364 10448088
These values all seem correct. Actually, I'm not quite sure what
the $when is doing, but ....
So, why is rrdupdate complaining about "dummy"? Any ideas, please?
Thank you --Greg Redder
Network Analyst
Colorado State University
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Greg Redder Academic Computing & Networking Services
Colorado State University, ACNS Phone:(970)491-7222 FAX: (970)491-1958
601 S. Howes, Room 625 E-mail: redder@yuma.colostate.edu
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