thr3ads.net - libvirt users - [libvirt-users] can't up the eth in the vm and access to network [May 2011]

If this information is useful, please help other people find it:
Share via:

guan qin

2011-May-01 08:38 UTC

[libvirt-users] can't up the eth in the vm and access to network

Hi,

I encounter a problem that the eth can't be up in the VM by using VT-d.
I boot the VM using "virsh create vt_d.xml".
The VM could recongize the NIC which was assigned .then I do in VM as
follows:
#cat /sys/class/net/eth0/operstate
down
#ifconfig eth0 up
#cat /sys/class/net/eth0/operstate
down
#ficonfig eth 10.100.0.5
#cat /sys/class/net/eth0/operstate
down
more system information is attached.(uname ?ifconfig ?lspci?cmdline...)

I can't figure out the reason why the eth is still down? can anyone help me
?

best regards,
qinguan



vt_d.xml:
<domain type='kvm'>
    <name>test</name>
    <description>just test using sriov!</description>
    <os>
        <type>hvm</type>
        <boot dev='hd'/>
    </os>
    <memory>524288</memory>
    <currentMemory>524288</currentMemory>
    <on_poweroff>destroy</on_poweroff>
    <on_reboot>restart</on_reboot>
    <on_crash>restart</on_crash>

    <features><pae/><acpi/><apic/></features>
    <clock offset='utc'/>
    <devices>
        <input type='mouse' bus='usb'/>
        <disk type='file' device='disk'>
            <source file='/home/qinguan/exp/ubuntu_1.img'/>
            <target dev='hda' bus='virtio'/>
        </disk>
        <emulator>/usr/bin/kvm</emulator>
        <graphics type='vnc' port='-1'/>
        <hostdev mode='subsystem' type='pci'
managed='yes'>
            <source>
                <address bus='0x0' slot='0x19'
function='0x0'/>
            </source>
        </hostdev>
    </devices>
</domain>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20110501/7b8e0e94/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: system
Type: application/octet-stream
Size: 31550 bytes
Desc: not available
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20110501/7b8e0e94/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Screenshot.png
Type: image/png
Size: 163573 bytes
Desc: not available
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20110501/7b8e0e94/attachment.png>

Marco van Beek

2011-May-02 12:16 UTC

head link

[libvirt-users] can't up the eth in the vm and access to network

Hi,

If you find that the whole VM does not come up, then it may either be
permissions due to apparmor, (if you are running it), or as I found out,
unless your motherboard supports IOMMU, then PCI passthough (which is
what you appear to be trying to do) will apparently never work.

What you would normally see in the xml file is something like this:

<interface type='network'>
<mac address='54:52:00:18:88:29'/>
<source network='default'/>
</interface>

or

<interface type='bridge'>
<mac address='00:16:3e:19:b4:38'/>
<source bridge='br0'/>
</interface>

Hope this helps.

Regards,

Marco

On 01/05/11 09:38, guan qin wrote:> Hi,
>
> I encounter a problem that the eth can't be up in the VM by using VT-d.
> I boot the VM using "virsh create vt_d.xml".
> The VM could recongize the NIC which was assigned .then I do in VM as
> follows:
> #cat /sys/class/net/eth0/operstate
> down
> #ifconfig eth0 up
> #cat /sys/class/net/eth0/operstate
> down
> #ficonfig eth 10.100.0.5
> #cat /sys/class/net/eth0/operstate
> down
> more system information is attached.(uname ?ifconfig ?lspci?cmdline...)
>
> I can't figure out the reason why the eth is still down? can anyone
> help me ?
>
> best regards,
> qinguan
>
>
>
> vt_d.xml:
> <domain type='kvm'>
> <name>test</name>
> <description>just test using sriov!</description>
> <os>
> <type>hvm</type>
> <boot dev='hd'/>
> </os>
> <memory>524288</memory>
> <currentMemory>524288</currentMemory>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>restart</on_crash>
>
> <features><pae/><acpi/><apic/></features>
> <clock offset='utc'/>
> <devices>
> <input type='mouse' bus='usb'/>
> <disk type='file' device='disk'>
> <source file='/home/qinguan/exp/ubuntu_1.img'/>
> <target dev='hda' bus='virtio'/>
> </disk>
> <emulator>/usr/bin/kvm</emulator>
> <graphics type='vnc' port='-1'/>
> <hostdev mode='subsystem' type='pci'
managed='yes'>
> <source>
> <address bus='0x0' slot='0x19'
function='0x0'/>
> </source>
> </hostdev>
> </devices>
> </domain>
>
>
> _______________________________________________
> libvirt-users mailing list
> libvirt-users at redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users
-- 
Marco van Beek
==================================================Forget About IT Ltd.
Grove Park Studios,
188-192 Sutton Court Rd,
London, W4 3HR
==================================================T: 0870 757 2924
F: 0870 757 2926
M: 0788 770 3604
E: mvanbeek at forgetaboutit.net
W: http://www.forgetaboutit.net/
==================================================Forget About IT and FABIT are
registered trademarks
==================================================Company Registered in England
No. 05375739
==================================================

-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20110502/ed5e81cd/attachment.htm>

David White

2011-May-03 00:47 UTC

head link

[libvirt-users] can't up the eth in the vm and access to network

did you 'unbind' the device from the host OS driver?

On 05/01/2011 01:38 AM, guan qin wrote:> Hi,
>
> I encounter a problem that the eth can't be up in the VM by using VT-d.
> I boot the VM using "virsh create vt_d.xml".
> The VM could recongize the NIC which was assigned .then I do in VM as
> follows:
> #cat /sys/class/net/eth0/operstate
> down
> #ifconfig eth0 up
> #cat /sys/class/net/eth0/operstate
> down
> #ficonfig eth 10.100.0.5
> #cat /sys/class/net/eth0/operstate
> down
> more system information is attached.(uname ?ifconfig ?lspci?cmdline...)
>
> I can't figure out the reason why the eth is still down? can anyone
> help me ?
>
> best regards,
> qinguan
>
>
>
> vt_d.xml:
> <domain type='kvm'>
> <name>test</name>
> <description>just test using sriov!</description>
> <os>
> <type>hvm</type>
> <boot dev='hd'/>
> </os>
> <memory>524288</memory>
> <currentMemory>524288</currentMemory>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>restart</on_crash>
>
> <features><pae/><acpi/><apic/></features>
> <clock offset='utc'/>
> <devices>
> <input type='mouse' bus='usb'/>
> <disk type='file' device='disk'>
> <source file='/home/qinguan/exp/ubuntu_1.img'/>
> <target dev='hda' bus='virtio'/>
> </disk>
> <emulator>/usr/bin/kvm</emulator>
> <graphics type='vnc' port='-1'/>
> <hostdev mode='subsystem' type='pci'
managed='yes'>
> <source>
> <address bus='0x0' slot='0x19'
function='0x0'/>
> </source>
> </hostdev>
> </devices>
> </domain>
>
>
> _______________________________________________
> libvirt-users mailing list
> libvirt-users at redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://listman.redhat.com/archives/libvirt-users/attachments/20110502/74dacd32/attachment.htm>

Maybe Matching Threads

Search for more apparently analagous threads

libvirt users - May 2011 - can't up the eth in the vm and access to network

[libvirt-users] can't up the eth in the vm and access to network

[libvirt-users] can't up the eth in the vm and access to network

[libvirt-users] can't up the eth in the vm and access to network

Maybe Matching Threads