1) It seems to happen every night (which is when the Ceph cluster is most used). Not sure if it's at a specific time or whether anything else could be interacting with it - I'll see if I can narrow this down. I'm trying to run some tests to see whether I can force it to happen by throwing a lot of traffic at it (using iperf3 - if you have better suggestions on how to generate load please let me know).
2) As above, trying network benchmark tool to see if it triggers. If not, I'll specifically push load through Ceph to see if I can reliably re-trigger the failure. 3) I thought the initial report was about virtio network with the suggestion that e1000 might solve it but would bring it's own issues with it. I am currently on virtio, but may change over to e1000 to see if the problem persists. Ideally wouldn't want this as a long term solution as I have previously found e1000 to be slower. 4) Couldn't see anything in the logs on either the host or the guest suggesting that there was anything going on. The guest doesn't seem to be aware that the NIC isn't functional but traffic just doesn't seem to flow over it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1694625 Title: KVM Guest loses network connectivity under heavy load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1694625/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
