[Users] ovirt reporting wrong cpu family

[Martin Kletzander]

On 02/16/2013 10:02 PM, Itamar Heim wrote:
> On 16/02/2013 22:46, Adrian Gibanel wrote:
>> Yes, I know. I meant a workaround where the processor is detected as
>> SandyBridge.
> 
> Adrian - please provide libvirt version.
> Martin - can you please take a look?

I'm not sure what kind of help I can give here, but let me see.

> Adrian - can you later please wikify this recurring question?
> 

If this is related to libvirt detecting the wrong CPU, we have a short
wiki page [1] for that either, you can link to that in yours (or maybe
it'll help you write it).

[...]
>> On 16/02/2013 18:56, Adrian Gibanel wrote:
>>> I happen to have the same problem in oVirt 3.1 on Fedora.
>>> Any workaround?
>>>
>>> $ sudo vdsClient -s 0 getVdsCaps | grep -i flags ; echo -e -n "\n" ;cat /proc/cpuinfo | grep "model name" | head -n 1
>>> cpuFlags = fpu,vme,de,pse,tsc,msr,pae,mce,cx8,apic,sep,mtrr,pge,mca,cmov,pat,pse36,clflush,dts,acpi,mmx,fxsr,sse,sse2,ss,ht,tm,pbe,syscall,nx,rdtscp,lm,constant_tsc,arch_perfmon,pebs,bts,rep_good,nopl,xtopology,nonstop_tsc,aperfmperf,eagerfpu,pni,pclmulqdq,dtes64,monitor,ds_cpl,vmx,est,tm2,ssse3,cx16,xtpr,pdcm,pcid,sse4_1,sse4_2,popcnt,tsc_deadline_timer,xsave,avx,lahf_lm,arat,epb,xsaveopt,pln,pts,dtherm,tpr_shadow,vnmi,flexpriority,ept,vpid,model_coreduo,model_Conroe
>>>

At first, let me say that this is very weird CPU detection as according
to these flags, the processor described in here should be "Nehalem".
Could you try running 'virsh -r capabilities' on the host to check what
libvirt reports?

There might be a possible workaround if you want your CPU to be
identified as different model, most probably by editing
'/usr/share/libvirt/cpu_map.xml', but that should be omitted since it
may lead to problems.

[...]
>>> model name : Intel(R) Core(TM) i3-2130 CPU @ 3.40GHz
>>>

And as I see the CPU is SandyBridge, so this should be solved properly
(probably a bug somewhere or very low-level misconfiguration).  Check
[1], maybe some features can get enabled.

Martin

[1]
http://wiki.libvirt.org/page/Libvirt_identifies_host_processor_as_a_different_model_from_the_hardware_documentation