Network hangs on load

M

mcbarlo

New Member
Oct 10, 2015
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I have cluster with three servers with Ceph storage. All nic's are Intel x710 10G. On Ceph network everything is ok, but on nic to the Internet I have issue. When traffic load is about 1.5-2 Gbps per node network hangs. I must disconect and connect again vm virtual nic. This solve problem sometime for few hours sometime for few minutes.

All guest systems are Debian 9 and virtual nic's are virtio.

Could you help me debug this problem?

Code: 
proxmox-ve: 5.0-15 (running kernel: 4.10.15-1-pve)
pve-manager: 5.0-23 (running version: 5.0-23/af4267bf)
pve-kernel-4.10.15-1-pve: 4.10.15-15
libpve-http-server-perl: 2.0-5
lvm2: 2.02.168-pve2
corosync: 2.4.2-pve3
libqb0: 1.0.1-1
pve-cluster: 5.0-10
qemu-server: 5.0-12
pve-firmware: 2.0-2
libpve-common-perl: 5.0-16
libpve-guest-common-perl: 2.0-11
libpve-access-control: 5.0-5
libpve-storage-perl: 5.0-12
pve-libspice-server1: 0.12.8-3
vncterm: 1.5-2
pve-docs: 5.0-6
pve-qemu-kvm: 2.9.0-2
pve-container: 2.0-14
pve-firewall: 3.0-1
pve-ha-manager: 2.0-2
ksm-control-daemon: 1.2-2
glusterfs-client: 3.8.8-1
lxc-pve: 2.0.8-3
lxcfs: 2.0.7-pve2
criu: 2.11.1-1~bpo90
novnc-pve: 0.6-4
smartmontools: 6.5+svn4324-1
zfsutils-linux: 0.6.5.9-pve16~bpo90
openvswitch-switch: 2.6.2~pre+git20161223-3
ceph: 12.1.0-pve2
 
Hi,

you have to provide more information about your network.
please send the network config.
 
Ok, here is interfaces config:

Code: 
auto lo
iface lo inet loopback

allow-vmbr0 ens2f0
iface ens2f0 inet manual
    ovs_type OVSPort
    ovs_bridge vmbr0

iface ens9f0 inet manual

iface ens9f1 inet manual

iface ens9f2 inet manual

iface ens9f3 inet manual

allow-vmbr1 ens2f1
iface ens2f1 inet manual
    ovs_type OVSPort
    ovs_bridge vmbr1

allow-vmbr1 ens2f2
iface ens2f2 inet manual
    ovs_type OVSPort
    ovs_bridge vmbr1

iface ens2f3 inet manual

auto vmbr1
iface vmbr1 inet static
    address  10.0.0.200
    netmask  255.255.255.0
    ovs_type OVSBridge
    ovs_ports ens2f1 ens2f2
    pre-up ip link set dev ens2f1 mtu 9000; ip link set dev ens2f2 mtu 9000
    up ovs-vsctl set Bridge ${IFACE} rstp_enable=true

auto vmbr0
iface vmbr0 inet static
    address  xx.xx.128.200
    netmask  255.255.255.192
    gateway  xx.xx.128.193
    ovs_type OVSBridge
    ovs_ports ens2f0
 
I tryed differend kernel versions on guest and Linux bridge insted of OVS. Unfortunatally nothing helps.

Can I use another virtual nic to achive transfers more than 1 Gbps? May be this is problem only virtio driver?
 
Try to use instead OVS a plain Linux bridge for the internet network.
 
I tryed, this nothing change. I think about passthrough nic into vm but this is not solution.
 
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