Hi Lev.

On one of the VMs you only see 1 NIC instead of the 2?

NO. both VM's sees two NIC, but on first VM ping with no error, and second VM ping with 75% error.

OS version on hosts [root@node01 ~]# cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)

OS veriosion on VM's [root@node03 ~]# cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)

first VM

00:03.0 Ethernet controller: Red Hat, Inc Virtio network device

00:09.0 Ethernet controller: Red Hat, Inc Virtio network device

[root@node03 ~]# ip l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 00:1a:4a:16:01:51 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 00:1a:4a:16:01:55 brd ff:ff:ff:ff:ff:ff

second VM

00:03.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8100/8101L/8139 PCI Fast Ethernet Adapter (rev 20)  - but i tested all version of NIC and no effect

00:0a.0 Ethernet controller: Red Hat, Inc Virtio network device

[root@node04 ~]# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 00:1a:4a:16:01:53 brd ff:ff:ff:ff:ff:ff
3: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 00:1a:4a:16:01:52 brd ff:ff:ff:ff:ff:ff

In logs no messages only like this :

May 26 15:01:01 node04 systemd: Started Session 67263 of user root.
May 26 15:01:01 node04 systemd: Starting Session 67263 of user root.
May 26 15:01:01 node04 systemd: Created slice user-600.slice.
May 26 15:01:01 node04 systemd: Starting user-600.slice.
May 26 15:01:01 node04 systemd: Started Session 67262 of user bitrix.
May 26 15:01:01 node04 systemd: Starting Session 67262 of user bitrix.
May 26 15:01:01 node04 systemd: Removed slice user-600.slice.
May 26 15:01:01 node04 systemd: Stopping user-600.slice.

Hi Alexander,

So if I understand it correctly, you have the following configuration:
- 2 hosts, each having 2 NICs
- 2 virtual machines, each have a connection to each one of the NICs
available on the hosts

On one of the VMs you only see 1 NIC instead of the 2?

Are you sure that the VM is properly configured to have 2 NICs?

What Linux distro and version you're using on the hosts and inside the VMs ?

Can you please send us:
- the logs from the VM, e.g. /var/log/messages
- the output of lspci -v
- the output of ip link

Thanks in advance,

2017-05-18 12:19 GMT+03:00 Герасимов Александр <gerasimov.ay at eksmo.ru>:

> Hi all.
>
> I have to servers with ovirt.
>
> And to identical virtual machines.
>
> Both servers are identical. But on second virtual server not working one
> network interface. Ping have a problem. I tried to change network driver,
> but has no effect.
>
> I don't understand that to do
>
>
> ovirt version and package:
>
> rpm -qa|grep ovirt
> ovirt-imageio-proxy-0.4.0-0.201608310602.gita9b573b.el7.centos.noarch
> ovirt-engine-vmconsole-proxy-helper-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-restapi-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-extensions-api-impl-4.0.5.5-1.el7.centos.noarch
> ovirt-imageio-daemon-0.4.0-1.el7.noarch
> ovirt-engine-wildfly-10.1.0-1.el7.x86_64
> ovirt-vmconsole-1.0.4-1.el7.centos.noarch
> ovirt-engine-cli-3.6.9.2-1.el7.noarch
> ovirt-engine-websocket-proxy-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-dashboard-1.0.5-1.el7.centos.noarch
> ovirt-host-deploy-1.5.3-1.el7.centos.noarch
> ovirt-engine-wildfly-overlay-10.0.0-1.el7.noarch
> ovirt-engine-setup-base-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-dwh-setup-4.0.5-1.el7.centos.noarch
> ovirt-engine-setup-plugin-websocket-proxy-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-setup-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-dbscripts-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-userportal-4.0.5.5-1.el7.centos.noarch
> ovirt-imageio-common-0.4.0-1.el7.noarch
> python-ovirt-engine-sdk4-4.0.2-1.el7.centos.x86_64
> ovirt-vmconsole-host-1.0.4-1.el7.centos.noarch
> ovirt-engine-dwh-4.0.5-1.el7.centos.noarch
> ovirt-engine-tools-backup-4.0.5.5-1.el7.centos.noarch
> ovirt-image-uploader-4.0.1-1.el7.centos.noarch
> ovirt-engine-setup-plugin-ovirt-engine-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-tools-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-4.0.5.5-1.el7.centos.noarch
> ovirt-release40-4.0.5-2.noarch
> ovirt-host-deploy-java-1.5.3-1.el7.centos.noarch
> ovirt-engine-setup-plugin-ovirt-engine-common-4.0.5.5-1.el7.centos.noarch
> ovirt-iso-uploader-4.0.2-1.el7.centos.noarch
> ovirt-engine-webadmin-portal-4.0.5.5-1.el7.centos.noarch
> ovirt-setup-lib-1.0.2-1.el7.centos.noarch
> ovirt-engine-sdk-python-3.6.9.1-1.el7.centos.noarch
> ovirt-engine-lib-4.0.5.5-1.el7.centos.noarch
> ovirt-imageio-proxy-setup-0.4.0-0.201608310602.gita9b573b.
> el7.centos.noarch
> ovirt-engine-setup-plugin-vmconsole-proxy-helper-4.0.5.
> 5-1.el7.centos.noarch
> ovirt-engine-backend-4.0.5.5-1.el7.centos.noarch
> ovirt-engine-extension-aaa-jdbc-1.1.1-1.el7.noarch
> ovirt-vmconsole-proxy-1.0.4-1.el7.centos.noarch
>
>

-- 
С уважением, базисный админстратор
Гераcимов Александр
тел. +7(495)4116886 доб. 5367

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