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[2.0] bug with big frames and device virbr0 #2022
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Could you post a screenshot? |
yes, but you will just see the lab (there are no error message), but perhaps is it that you want to see? |
Do you have special configuration on your virb0 or it's the default from libvirt? |
I have not installed libvirt. I have created this interface with "brctl addbr virbr0" |
I think something leak from your GNS3 virtual network that conflict with the virtual network. Perhaps one of your VirtualBox in the GNS3 network has the same mac address as the Live Raizo VM. |
There are no "Live Raizo VM" : LiveRaizo-1 is a device "Cloud Node" using virbr0. With my student, LiveRaizo is the OS of the host. I think more a bug as the cloud bug (#1829) : A server crashed because big frames. |
I think it's not a good idea to name something virbr0 if it's not a device from libvirt. It's very confusing and could create bug with software like network manager who use the naming schema for detecting the type of network interface (for example a veth need to start by veth). And I can't guarantee this will work fine in the NAT node. It's a bridge to your eth0? |
I think that i create virbr0 with the same method used by libvirt : brctl (but i can be wrong). They are no bridge between virbr0 and eth0. This morning, i have do a TP and no student signaled me this bug. But this lab used less "nfs" device that the first TP |
What is connected to this bridge? |
virbr0 is created with the command "brctl addbr virbr0" |
But I don't understand the purpose of a bridge connected to nothing else than the GNS3 topology. Why not using tap interface? |
For example, i can use a Web Browser on LiveRaizo to see web pages on virtual web server. |
What do you have when you run:
Perhaps the bug occur only if your NFS server as a common IP with something in your network, due to an isolation error. |
I think not. I choose very attentively the IPs of my virtual network in my TP. But, today, i have do an another TP (with only 1 nfs vdi). I have not see bug. Perhaps my bug was an edge effect of an another bug who was corrected. Friday, i could do (perhaps) a test to verify if this bug occurs again. |
Ok I close for the moment, we will reopen if we have more details and a way to reproduce. |
Hi
I use Live Raizo ;-)
Live Raizo contains a device called "Live Raizo" who is a "Cloud Nodes" connected to virbr0 interface.
I use linked VBOX with vdi which are stocked on a NFS server (then big frame).
On my lab, i put 1 device "LiveRaizo" and 2 "remotes" devices (vdi on nfs server) and 1 local device (Debian), connected to 2 ethernet switch
Then often with my students, GNS3 seems to lost communication with server (progress bar takes very long times).
I kill GNS3, and i reload the project : I don't see the bug (i think)
I put on the lab and connecte the device "Live Raizo" in last, i don't see the bug (i think)
And, on my office computer, this bug occured only one time.
Has you idea, or tests that i can do to help you to understand ?
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