[pve-devel] Proxmox RRD Data incorrect?

[Alexandre DERUMIER]

>>I think it do a overflow when the failure is smaller than the first one. 

Yes, It's possible if the vm restart or migrated (I see this behaviour with disk ios too)

an old bugzilla is open about this here

https://bugzilla.proxmox.com/show_bug.cgi?id=204


----- Mail original ----- 

De: "Johannes Ernst" <info at filemedia.de> 
À: pve-devel at pve.proxmox.com 
Envoyé: Mercredi 12 Février 2014 13:06:17 
Objet: [pve-devel] Proxmox RRD Data incorrect? 

Hello, 

anyone have the same issue that the rrd collection not work probably? 
Sometimes it shows values for netin and netout traffic with more than few petabytes and creates values like that: "netout" : 1.0248191148006e+16 
The delta would be no correct calculated. I think it do a overflow when the failure is smaller than the first one. 

I think we should check the value which will be saved or send to a api call. If that something like petabytes it should be dropped and only delivery 0. It is better than send so big values which are not correct and can break some traffic accounting or something. 

-- 

Mit freundlichen Grüßen 

Johannes Ernst 

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