FW_FR launch failed

[PengRspace]

Hi,

In our votp-host, we have tried to deploy a VM of FW_FR which was defined by a xml file with content like the one attached below. FW_FR.txt

Status IP: votp-host:~$ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever 2: enp0s9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 52:54:00:75:72:67 brd ff:ff:ff:ff:ff:ff inet 172.31.2.196/24 brd 172.31.2.255 scope global dynamic enp0s9 valid_lft 2174sec preferred_lft 2174sec 3: enp0s10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 52:54:00:c5:7d:8d brd ff:ff:ff:ff:ff:ff inet 172.31.3.163/24 brd 172.31.3.255 scope global dynamic enp0s10 valid_lft 2174sec preferred_lft 2174sec 4: enp0s11: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 52:54:00:55:72:67 brd ff:ff:ff:ff:ff:ff 5: enp0s12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 52:54:00:09:a6:2d brd ff:ff:ff:ff:ff:ff inet 192.168.100.217/24 brd 192.168.100.255 scope global dynamic enp0s12 valid_lft 2175sec preferred_lft 2175sec 6: enp0s13: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 52:54:00:0e:75:2d brd ff:ff:ff:ff:ff:ff 7: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 52:54:00:50:1c:ab brd ff:ff:ff:ff:ff:ff inet 172.31.1.12/24 brd 172.31.1.255 scope global dynamic enp0s3 valid_lft 34574sec preferred_lft 34574sec 8: gre0@NONE: mtu 1476 qdisc noop state DOWN group default qlen 1000 link/gre 0.0.0.0 brd 0.0.0.0 9: gretap0@NONE: <BROADCAST,MULTICAST> mtu 1462 qdisc noop state DOWN group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 10: erspan0@NONE: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN group default qlen 1000 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 11: sit0@NONE: mtu 1480 qdisc noop state DOWN group default qlen 1000 link/sit 0.0.0.0 brd 0.0.0.0

And the interface enp0s9 was defined with virsh net-define enp0s9.xml. enp0s9.txt

But when we tried to launch it, we got:

votp-host:~$ sudo virsh net-start enp0s9 error: Failed to start network enp0s9 error: cannot write to /proc/sys/net/ipv6/conf/virbr0/disable_ipv6 to enable/disable IPv6 on bridge virbr0: Read-only file system

And, it seems that the VM FW_FR can't be launched for it:

votp-host:~$ virsh start FW_FR error: Failed to start domain FW_FR error: Requested operation is not valid: network 'enp0s9' is not active

Then, we tried to add virbr0 and enp0s9 in OVS like below: votp-host:~$ sudo ovs-vsctl show e6638c18-7855-46e0-ae42-f0574d61302f Bridge virbr0 Port virbr0 Interface virbr0 type: internal Port enp0s9 Interface enp0s9 ovs_version: "2.15.2"

The error message of 'net-start' was changed like: votp-host:~$ sudo virsh net-start enp0s9 error: Failed to start network enp0s9 error: error creating bridge interface virbr0: File exists

So, could you please help us to figure out how to fix it ?

Thanks in avance.

Best regards

Peng

[dupremathieu]

Hi, The syntax in enp0s9.txt and FW_FR.txt are both incorrect.

There are two ways to use an OVS with libvirt:

• create the bridge port outside libvirt and use the to attach it in libvirt (this is what is done in SEAPATH by default)
• let libvirt create the ports

Here you have mixed the two ways.

SEAPATH only support the first way, if you want libvirt create the ports you have to remove "ProtectKernelTunables=yes" in /lib/systemd/system/libvirtd.service.

[PengRspace]

Hi Mathieu,

After delete all the lines of network and some lines of type='spicevmc' in FW-FR.xml, this vm has been started successfully.

Many thanks for help.

Best regards

Peng

[PengRspace]

Hi Mathieu,

Just, how to attach the bright port outside libvirt for this VM, please ?

Thanks.

[dupremathieu]

If you already have created enp0s9 you can add this in your libvirt VM XML file:

<interface type="ethernet">
        <mac address='52:54:00:e7:41:b5'/>
        <target dev="enp0s9" managed="no"/>
        <model type="virtio"/>
</interface>

[PengRspace]

I have added this 5 lines in my FW_FR.xml, and defined with virsh define.

But when I tried to start this VM, I got an error below:

votp-host:~/stockage_pool$ virsh start FW_FR error: Failed to start domain FW_FR error: Unable to create tap device enp0s9: Invalid argument

[PengRspace]

Hi Mathieu,

About enp0s9, it should be created on our votp-host via Virtual Machine Manager or in libvirt via virsh net-define, please ?

Thanks in avance.

Peng

[PengRspace]

Hi Mathieu,

Could you please give us a little help to launch this VM proprely ? So, I just reopen it for a moment.

Thanks in avance.

Peng

[eroussy]

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