Hello,

i am using debian6 with libvirt and kvm. I have a windows 7 as a guest machine, and this machine needs more then 2 cpu threads.

If i only set vcpu in the xml configuration of the machine, i only see 2 cpus in the windows task manager (because of the windows cpu limitation).

I found a tutorial, to passtrough cpu cores/threads as a socket.

 

virsh capabilities -> copy cpu socket section, and insert it into the virtual machine.

 

On one machine it works for ~1-2 days, then the machine crash and i must restart the machine.

On a other hypervizor machine, the virtual windows 7 machine gets a blue screen by starting up.

 

dom0:

<cpu>
<arch>x86_64</arch>
<model>Westmere</model>
<vendor>Intel</vendor>
<topology sockets='1' cores='4' threads='2'/>
<feature name='rdtscp'/>
<feature name='pdpe1gb'/>
<feature name='dca'/>
<feature name='pdcm'/>
<feature name='xtpr'/>
<feature name='tm2'/>
<feature name='est'/>
<feature name='smx'/>
<feature name='vmx'/>
<feature name='ds_cpl'/>
<feature name='monitor'/>
<feature name='dtes64'/>
<feature name='pclmuldq'/>
<feature name='pbe'/>
<feature name='tm'/>
<feature name='ht'/>
<feature name='ss'/>
<feature name='acpi'/>
<feature name='ds'/>
<feature name='vme'/>
</cpu>

 

cat /proc/cpuinfo

processor : 15
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU E5630 <at> 2.53GHz
stepping : 2
cpu MHz : 2533.489
cache size : 12288 KB
physical id : 1
..

...

 

When i starting the virtual machine with " <model>Westmere</model>", the machine is running with core2duo (i see it with ps aux | grep kvm | grep windows7).

Must i enable Westmere support??

Or is there an other solution?

libvirt version: 0.9.12-5.123.201303061845

Thanks!

I've got a small problem using libvirt-1.0.5.1 (with the latest patch in the v1.0.5-maint branch on git added).

I am having trouble with a libvirt lxc EXE container which is starting another EXE container itself, and I need to see the console output of (hopefully) both containers.  How do I do this?  I have searched the net a lot, but the answers I found were either out of date, wrong or didn't work.  Has anyone else here done this?

Jon

Hi,

I try to add 2 VF functions to VM via network.

Livirt networks:

vnet0:

<network>

  <name>vnet0</name>

  <forward mode='hostdev' managed='yes'>

    <pf dev='eth0'/>

  </forward>

</network>

vnet1:

<network>

  <name>vnet0</name>

  <forward mode='hostdev' managed='yes'>

    <pf dev='eth1'/>

  </forward>

</network>

In VM configuration:

 <interface type="network">

     <source network="vnet0"/>

     <mac address="52:54:0a:b1:48:07"/>

 </interface>

 <interface type="network">

     <source network="vnet1"/>

     <mac address="52:54:0a:b1:48:07"/>

 </interface>

 

VM can't start because:

 kvm: -device pci-assign,configfd=24,host=01:10.1,id=hostdev0,bus=pci.0,addr=0x4: Duplicate ID 'hostdev0' for device

libvirt version 1.0.5.

What i am doing wrong?

--

Regards

Dominik

From my reading about nova interface to libvirt, I came to know it uses a libvirt driver module to communicate with host libvirt. I was wondering if there are any compatibility matrix available between the nova libvirt driver and the libvirt installed in the host ?

Hello:

Yesterday I yum update libvirt from 0.9.10 to 0.10.2 ,after update I got some error in libvirtd.log

 like this:

my version info :

in /cgroup dir I cannot find anything about vm1.how can I recover the missing cgroup for vm ?

thanks !