[mrtg] daemon robustness problem

Greg.Volk at edwardjones.com Greg.Volk at edwardjones.com
Fri May 3 16:26:36 MEST 2002

Every so often, I run into the following error...

> mrtg switch-r-core1a.cfg
Daemonizing MRTG ...
> ERROR: Cannot update /home/mrtg/public_html/switch-r-core1a/switch-r-core1a_port-channel10.rrd with '1020433785:0:0' unknown consolidation function 'RRD'

This causes the daemon to die, and all the targets in that particular 
config file go un-updated until I realize that this has happened. To
fix it I end up deleting the RRD file that caused the error, delete
the PID file that was left behind due to the daemon's death, and then 
relaunch the daemon.

What causes this? 

Could it be bad hardware (disk?) errors on my system? The OS 
hasn't ever complained about any hardware problems, and the 
box has never crashed - it's at 168 days of uptime right now 
- so I don't think any dirty-shutdowns are to blame. 
Could I be looking at an RRDtool bug? I'm running v1.0.33. I 
looked at the changelog since 1.0.33 and didn't see anything
mentioning this.

Has anyone else run into this?


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