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RE: [Xen-users] limts on per-vm vifs?

To: "Subrahmanian, Raj" <raj.subrahmanian@xxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-users] limts on per-vm vifs?
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Wed, 28 Dec 2005 22:58:54 -0000
Cc: ian.pratt@xxxxxxxxxxxx
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Thread-index: AcYMAAyIj34NuRQjT+u63F90ZLXT5wAAgOlg
Thread-topic: [Xen-users] limts on per-vm vifs?
> I was trying to see how many vifs I could create per VM.
> When I tried to set it up by setting nics=6 and defining the 
> values for each of the nics using the vif commands, I can see 
> the DomU acknowledging 6 nics at startup(eth0-eth5). However, 
> it is unable to setup the nics 4, 5, and 6( eth3-5).
> The following messages appeared on the /var/log/messages on Dom0.
> From this, it seems that the six vifs were created and then 
> the last 3 were taken offline. I have marked the part where 
> this happens with a line.
> When I try to manually look at eth3-5 on the domu, I get the 
> message  "error fetching interface information, device not found".
> Has anyone seen this kind of behaviour before?

As I recall, it's a grant table size issue; the backend code should
dynamically allocate it but currently doesn't.


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