libvirt users - Jan 2018 - Re: Create virtual machine failed using virDomainCreateXML

Hi all, 


When I created a virtual machine using virDomainCreateXML, with virtualport type
was openvswitch, and virtual machine creation failed. The error message is:
internal error: Child process (/sbin/tc filter add dev vnet110 parent ffff:
protocol all u32 match u32 0 0 police rate 0kbps burst 0kb mtu 64kb drop flowid
:1) unexpected exit status 2: RTNETLINK answers: Invalid argument


The Domain XML file the <interface> section like this:
<interface type='bridge'><mac
address='52:54:00:71:b1:b6'/><source
bridge='ovsbr'/><virtualport
type='openvswitch'/><address type='pci'
domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/></interface>


I looked at the system log and it looked like an ovs port problem:
4560 Jan 22 17:43:33 ubuntu-24 ovs-vsctl: ovs|00001|vsctl|INFO|Called as
ovs-vsctl --timeout=5 -- --if-exists del-port vnet110 -- add-port lcs_br_1
vnet110 -- set Interface vnet110 "external-    
ids:attached-mac=\"52:54:00:21:63:25\"" -- set Interface vnet110
"external-ids:iface-id=\"d0e5c770-6f03-4703-b107-3b074f989b06\""
-- set Interface vnet110 "external-ids:vm-id=\"1c79066e-    
46a2-4fa0-984c-a88a7fffcd2b\"" -- set Interface vnet110
external-ids:iface-status=active
4561 Jan 22 17:43:33 ubuntu-24 kernel: [29028.418651] device vnet110 entered
promiscuous mode
4562 Jan 22 17:43:33 ubuntu-24 libvirtd[4307]: 2018-01-22 09:43:33.507+0000:
4310: error : virCommandWait:2572 : internal error: Child process (/sbin/tc
filter add dev vnet110 parent ffff: pr     otocol all u32 match u32 0 0 police
rate 0kbps burst 0kb mtu 64kb drop flowid :1) unexpected exit status 2:
RTNETLINK answers: Invalid argument
4563 Jan 22 17:43:33 ubuntu-24 libvirtd[4307]: We have an error talking to the
kernel
4564 Jan 22 17:43:33 ubuntu-24 kernel: [29028.454028] device vnet110 left
promiscuous mode
4565 Jan 22 17:43:33 ubuntu-24 ovs-vsctl: ovs|00001|vsctl|INFO|Called as
ovs-vsctl --timeout=5 -- --if-exists del-port vnet110





However, when I use "tc" to manage "vnet*" of an existing
virtual machine, it still returns the same error.
root@ubuntu-24:~# /sbin/tc filter add dev vnet83 parent ffff: protocol all u32
match u32 0 0 police rate 0kbps burst 0kb mtu 64kb drop flowid :1
RTNETLINK answers: Invalid argument
We have an error talking to the kernel




Is there any reason for this problem? Thank you very much.


Below some information about my machine:
libvirt version: 3.4.0
ovs_version: "2.8.90"
root@ubuntu-24:~# uname -a
Linux ubuntu-24 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux

On 01/23/2018 09:45 AM, netsurfed wrote:
> Hi all, 
> 
> 
> When I created a virtual machine using virDomainCreateXML, with virtualport
type was openvswitch, and virtual machine creation failed. The error message is:
> internal error: Child process (/sbin/tc filter add dev vnet110 parent ffff:
protocol all u32 match u32 0 0 police rate 0kbps burst 0kb mtu 64kb drop flowid
:1) unexpected exit status 2: RTNETLINK answers: Invalid argument
> 
> 
> The Domain XML file the <interface> section like this:
> <interface type='bridge'><mac
address='52:54:00:71:b1:b6'/><source
bridge='ovsbr'/><virtualport
type='openvswitch'/><address type='pci'
domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/></interface>

This doesn't look right, because you have no QoS defined here
...
> 
> 
> I looked at the system log and it looked like an ovs port problem:
> 4560 Jan 22 17:43:33 ubuntu-24 ovs-vsctl: ovs|00001|vsctl|INFO|Called as
ovs-vsctl --timeout=5 -- --if-exists del-port vnet110 -- add-port lcs_br_1
vnet110 -- set Interface vnet110 "external-    
ids:attached-mac=\"52:54:00:21:63:25\"" -- set Interface vnet110
"external-ids:iface-id=\"d0e5c770-6f03-4703-b107-3b074f989b06\""
-- set Interface vnet110 "external-ids:vm-id=\"1c79066e-    
46a2-4fa0-984c-a88a7fffcd2b\"" -- set Interface vnet110
external-ids:iface-status=active
> 4561 Jan 22 17:43:33 ubuntu-24 kernel: [29028.418651] device vnet110
entered promiscuous mode
> 4562 Jan 22 17:43:33 ubuntu-24 libvirtd[4307]: 2018-01-22
09:43:33.507+0000: 4310: error : virCommandWait:2572 : internal error: Child
process (/sbin/tc filter add dev vnet110 parent ffff: pr     otocol all u32
match u32 0 0 police rate 0kbps burst 0kb mtu 64kb drop flowid :1) unexpected
exit status 2: RTNETLINK answers: Invalid argument
But libvirt is still trying to set some. Are you sure you're pasting the
correct XML? Also, your kernel is probably lacking some of the required
features, like u32.

Michal

Dear Michal:
I'm sorry. The pasting XML I described earlier is wrong, and the real thing
is:
    <interface type='bridge'>
      <mac address='52:54:00:0a:2b:2a'/>
      <source bridge='lcs_br_1'/>
      <virtualport type='openvswitch'/>
      <bandwidth>
        <inbound average='0' peak='0'/>
        <outbound average='0' peak='0'/>
      </bandwidth>
      <model type='virtio'/>
    </interface>


I'm really sorry. I forgot I had QoS defined on the virtual machine.
And this problem doesn't happen every time. I encountered this problem when
I used the same XML to create about 100 virtual machines on a hypervisor.






At 2018-01-24 20:48:43, "Michal Privoznik" <mprivozn@redhat.com>
wrote:
>On 01/23/2018 09:45 AM, netsurfed wrote:
>> Hi all, 
>> 
>> 
>> When I created a virtual machine using virDomainCreateXML, with
virtualport type was openvswitch, and virtual machine creation failed. The error
message is:
>> internal error: Child process (/sbin/tc filter add dev vnet110 parent
ffff: protocol all u32 match u32 0 0 police rate 0kbps burst 0kb mtu 64kb drop
flowid :1) unexpected exit status 2: RTNETLINK answers: Invalid argument
>> 
>> 
>> The Domain XML file the <interface> section like this:
>> <interface type='bridge'><mac
address='52:54:00:71:b1:b6'/><source
bridge='ovsbr'/><virtualport
type='openvswitch'/><address type='pci'
domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/></interface>
>
>
>This doesn't look right, because you have no QoS defined here ...
>> 
>> 
>> I looked at the system log and it looked like an ovs port problem:
>> 4560 Jan 22 17:43:33 ubuntu-24 ovs-vsctl: ovs|00001|vsctl|INFO|Called
as ovs-vsctl --timeout=5 -- --if-exists del-port vnet110 -- add-port lcs_br_1
vnet110 -- set Interface vnet110 "external-    
ids:attached-mac=\"52:54:00:21:63:25\"" -- set Interface vnet110
"external-ids:iface-id=\"d0e5c770-6f03-4703-b107-3b074f989b06\""
-- set Interface vnet110 "external-ids:vm-id=\"1c79066e-    
46a2-4fa0-984c-a88a7fffcd2b\"" -- set Interface vnet110
external-ids:iface-status=active
>> 4561 Jan 22 17:43:33 ubuntu-24 kernel: [29028.418651] device vnet110
entered promiscuous mode
>> 4562 Jan 22 17:43:33 ubuntu-24 libvirtd[4307]: 2018-01-22
09:43:33.507+0000: 4310: error : virCommandWait:2572 : internal error: Child
process (/sbin/tc filter add dev vnet110 parent ffff: pr     otocol all u32
match u32 0 0 police rate 0kbps burst 0kb mtu 64kb drop flowid :1) unexpected
exit status 2: RTNETLINK answers: Invalid argument
>
>But libvirt is still trying to set some. Are you sure you're pasting the
>correct XML? Also, your kernel is probably lacking some of the required
>features, like u32.
>
>Michal