[libvirt] can't get right capabilities

[Li Zhang]

Hi,

I am trying to use x86 machine to create VMs.
But one error occurs.

[root at mcd kvm-test]# virsh create test.xml
error: Failed to create domain from test.xml
error: unknown OS type hvm

My xml file is as the following:

<domain type='kvm'>
       <name>test</name>
       <memory>524288</memory>
       <memorybacking>
           <hugepages/>
       </memorybacking>
       <vcpu>2</vcpu>
       <os>
           <type arch='x86_64' machine='pc'>hvm</type>
       </os>
       <features>
           <acpi/>
       </features>
       <clock offset='utc'/>
       <devices>
           <emulator>/usr/bin/qemu-system-x86_64</emulator>
           <disk type='file' device='disk' >
               <driver name='qemu' type='raw'/>
               <source file='/home/zhlbj/kvm-test/disk1'/>
               <target dev='sda' bus='scsi'/>
           </disk>
           <interface type='bridge'>
                <source bridge='virbr0'/>
                <mac address='52:54:00:19:bc:0c'/>
           </interface>
           <serial type='pty'>
              <target port='0'/>
           </serial>
           <console type='pty'>
              <target type='serial' port='0'/>
           </console>
           <memballoon model="none"/>
       </devices>
</domain>


I check kvm module, it is available.

[root at mcd kvm-test]# lsmod |grep kvm
kvm_intel             119308  4
kvm                   344876  1 kvm_intel

But I tried the capabilities, it is not right.
There is no guest capabilities.

<capabilities>

   <host>
     <uuid>d4ff0166-0f8b-e111-ab17-78a277034000</uuid>
     <cpu>
       <arch>x86_64</arch>
       <model>Nehalem</model>
       <vendor>Intel</vendor>
       <topology sockets='1' cores='4' threads='1'/>
       <feature name='rdtscp'/>
       <feature name='avx'/>
       <feature name='osxsave'/>
       <feature name='xsave'/>
       <feature name='tsc-deadline'/>
       <feature name='x2apic'/>
       <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>
     <power_management>
       <suspend_mem/>
       <suspend_disk/>
       <suspend_hybrid/>
     </power_management>
     <migration_features>
       <live/>
       <uri_transports>
         <uri_transport>tcp</uri_transport>
       </uri_transports>
     </migration_features>
     <secmodel>
       <model>selinux</model>
       <doi>0</doi>
     </secmodel>
   </host>

</capabilities>


This problem occurs some times.
When I tried to find this problem, it didn't occur.
Now it occurs again. It's a little strange.

Is there anything I miss?


-- 
Best Regards
Li

IBM LTC, China System&Technology Lab, Beijing