[ovirt-devel] oVirt 3.6 Feature: Cumulative Network Usage Statistics

[Lior Vernia]

On 26/01/15 15:45, Dan Kenigsberg wrote:
> On Mon, Dec 22, 2014 at 01:40:06PM +0200, Lior Vernia wrote:
>> Hello users and developers,
>>
>> Just put up a feature page for the aforementioned feature; in summary,
>> to report total RX/TX statistics for hosts and VMs in oVirt. This has
>> been requested several times on the users mailing list, and is
>> especially useful for accounting in VDI deployments.
>>
>> You're more than welcome to review the feature page:
>> http://www.ovirt.org/Features/Cumulative_RX_TX_Statistics
> 
> Sorry for the late review; I have a couple of questions/comments.
> - What do you mean by "VDI use cases" in the "Benefit to oVirt sanpshot"
>   section?
>   Do you refer to hosting services who would like to charge their
>   customers based on actual bandwidth usage?

Indeed, as well as monitoring utilisation by non-paying users (say
inside the same organization). Changed the wording a little, as hosting
services are really the prime candidate.

> - I've added another motivation: currently-reported rxRate/txRate
>   can be utterly meaningless.
> 
> 
> I don't see reference to nasty negative flows: what happens if a host
> disappears? Or a VM? I suppose there's always a chance that some traffic
> would go unaccounted for. But do you expect to extract this information
> somehow? Either way, it should be mentioned as a caveat on the feature
> page.
> 

What do you mean by "disappears"? Engine loses connectivity to it?

>>
>> Note that this only deals with network usage - it'll be great if we have
>> similar features for CPU and disk usage!
> 
> There's a formal feature request about this:
>     Bug 1172153 - [RFE] Collect CPU, IO and network accounting
>     information
> 
> Dan
>