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

[guan qin]

sorry for missing some information.
I checkd the device that :
# readlink /sys/bus/pci/devices/0000\:00\:19.0/driver
../../../bus/pci/drivers/pci-stub

the device has been already claimed by pci-stub and under the control of
pci_stub.
so the reason that can't up the eth in VM maybe has nothing to do with the
libvirt version.

After doing the first three
steps:How_to_assign_devices_with_VT-d_in_KVM<http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM>
(
*1. Modifying kernel config
**2. build kernel
**3. reboot and verify that your system has IOMMU support*
),
I use "virsh create vt_d.xml" instead of the ubind/bind and assign device.
(the kvm and kvm_intel has already been loaded)
should I do something others to use the VT_d?

best regards,
qinguan


在 2011年5月4日 下午2:31，guan qin <qinguan0619 at gmail.com>写道：

> Hi，the libvirt version is 0.8.3, I just used  "apt-get install libvirt-bin"
> to install it under debian6.0.1a.
> Is it  necessary to install 0.8.4 or higher version ?
>
> Best regards,
> qinguan
>
>
> 在 2011年5月3日 下午4:28，Osier Yang <jyang at redhat.com>写道：
>
>> 于 2011年05月03日 15:38, guan qin 写道:
>>
>> > Thanks a lot for your reply sincerely!
>> > Actually ,if I do as what
>> > http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVMsaid,:
>> > "
>> > # echo "8086 10b9" > /sys/bus/pci/drivers/pci-stub/new_id
>> > # echo 0000:01:00.0 > /sys/bus/pci/devices/0000:01:00.0/driver/unbind
>> > # echo 0000:01:00.0 > /sys/bus/pci/drivers/pci-stub/bind
>> > "
>> > Then I can assign a NIC to the VM ,and the VM also can use the NIC to
>> > access the network.
>> > But , according the libvirt guide that
>> > http://libvirt.org/formatdomain.html#elementsUSB shows:
>> > "
>> > When |managed| is "yes" for a PCI device, it is detached from the host
>> > before being passed on to the guest.
>> > "
>> > So should I still "unbind " the device from the host OS driver first ?
>> > If that ,What's the "detached" meaning ? thanks.
>> > best regards,
>> > qinguan
>>
>> libvirt trys to detach the PCI device from host as preparation when
>> starting up the domain, and it also binds the device to pci_stub
>> driver, so it's strange that you need to do it manually? what's
>> your libvirt version?
>>
>> > 在 2011年5月3日 上午8:47，David White <dwhite at speakeasy.net
>> > <mailto:dwhite at speakeasy.net>>写道：
>> >
>> >
>> >     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  <mailto:libvirt-users at redhat.com>
>> >>     https://www.redhat.com/mailman/listinfo/libvirt-users
>> >
>> >
>> >
>> >
>> > _______________________________________________
>> > 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/20110504/725b0db9/attachment.htm>