Univention Bugzilla – Bug 47112
By Using Virt-IO Driver in Windows Packet Loss
Last modified: 2018-12-17 10:09:48 CET
Customer is using VirtIO driver inside virtual Windows 2012R2 Machine. After a while he recons massive packet losses on connections to this server. An upgrade to the latest stable version 141 (from https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.141-1/virtio-win-0.1.141.iso ) did not change the behavior for long. As soon as using the e1000 driver the issue goes away. There exists an possibly related bug with the same symptoms: https://bugzilla.redhat.com/show_bug.cgi?id=1451978 Customer used v105 and tested v141 with the same results.
Commits for UCS 4.3 were wrongly tagged with this bug number, the UCS 4.3 bug is bug 47321 This will update the virtio driver to the current latest stable version. I could not reproduce the linked redhat issue with this driver version. Driver date: Fri Aug 04 2017 Version shown for netkvm.sys: 62.74.104.14100 bd34dec5 Update to virtio driver 0.1.141-1 b985a195 yaml
In the initial description customer had tried 141-1. Which did not work. Fix is now to update to 141-1 (comment #2)?
We discussed this internally. We can not currently reproduce the customer issue that was mentioned at the redhat bug. As at least the last stable driver version fixes that issue, we will ship the newest driver version with this bugfix. If the customer issue persists, it has to be debugged more in depth directly in their environment.
OK: https://fedorapeople.org/groups/virt/virtio-win/CHANGELOG OK: Win7 OK: Win8 OK: Win10 OK: Win2k12R2 OK: NetKVM OK: vIOstor OK: Live migration OK: ping -I0 OK: errata-announce -V --only univention-kvm-virtio.yaml OK: univention-kvm-virtio.yaml OK: dpkg -c univention-kvm-virtio_6.0.0-3A~4.2.0.201807091407_all.deb If the problem persists ask the customer to give <https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.149-2/virtio-win_amd64.vfd> a try.
<http://errata.software-univention.de/ucs/4.2/428.html>