Hi Magnus,

do you notice any repetition there ? Does it happen completely random ?

Usually to debug network issues you will need tcpdump from Guest, Host and the other side if possible.
Is that an option ?

Do you see in the host's tab those RX errors ?

What is the output of "ip -s link" on the Guest ?

Best Regards,
Strahil Nikolov

В четвъртък, 16 май 2019 г., 9:19:57 ч. Гринуич-4, Magnus Isaksson <magnus@vmar.se> написа:


Hello all!

I'm having quite some trouble with VMs that have a large amount of dropped packets on RX.
This, plus customers complain about short dropped connections, for example one customer has a SQL server and an other serevr connecting to it, and it is randomly dropping connections. Before they moved their VM:s to us they did not have any of these issues.

Does anyone have an idea of what this can be due to? And how can i fix it? It is starting to be a deal breaker for our customers on whether they will stay with us or not.

I was thinking of reinstalling the nodes with oVirt Node, instead of the full CentOS, would this perhaps fix the issue?

The enviroment is:
Huawei x6000 with 4 nodes
Each node having Intel X722 network card and connecting with 10G (fiber) to a Juniper EX 4600. Storage via FC to a IBM FS900.
Each node is running a full CentOS 7.6 connecting to a Engine 4.2.8.2

Regards
Magnus
_______________________________________________
Users mailing list -- users@ovirt.org
To unsubscribe send an email to users-leave@ovirt.org
Privacy Statement: https://www.ovirt.org/site/privacy-policy/
oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/
List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/QXGQSKYBUCFPDCBIQVAAZAWFQX54A2BD/