[CentOS-devel] 6.4 CR: oVirt 3.1 breaks with missing cpu features after update to CentOS 6.4 (6.3 + CR)

Patrick Hurrelmann patrick.hurrelmann at lobster.de
Tue Mar 5 09:09:29 UTC 2013


On 04.03.2013 23:40, Johnny Hughes wrote:
> On 03/04/2013 11:03 AM, Patrick Hurrelmann wrote:
>> Hi list,
>>
>> I tested the upcoming CentOS 6.4 release with my lab installation of
>> oVirt 3.1 and it fails to play well.
>>
>> Background: freshly installed CentOS 6.3 host in a Nehalem CPU-type
>> Cluster with 2 other hosts. Storage is iSCSI. Datacenter and Cluster are
>> both version 3.1. oVirt 3.1 was installed via Dreyou's repo.
>>
>> In CentOS 6.3 all is fine and the following rpms are installed:
>>
>> libvirt.x86_64                0.9.10-21.el6_3.8
>> libvirt-client.x86_64         0.9.10-21.el6_3.8
>> libvirt-lock-sanlock.x86_64   0.9.10-21.el6_3.8
>> libvirt-python.x86_64         0.9.10-21.el6_3.8
>> vdsm.x86_64                   4.10.0-0.46.15.el6
>> vdsm-cli.noarch               4.10.0-0.46.15.el6
>> vdsm-python.x86_64            4.10.0-0.46.15.el6
>> vdsm-xmlrpc.noarch            4.10.0-0.46.15.el6
>> qemu-kvm.x86_64               2:0.12.1.2-2.295.el6_3.10
>>
>>
>> uname -a
>> Linux vh-test1.mydomain.com 2.6.32-279.22.1.el6.x86_64 #1 SMP Wed Feb 6
>> 03:10:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
>>
>> virsh cpu capabilities on 6.3:
>>     <cpu>
>>       <arch>x86_64</arch>
>>       <model>Nehalem</model>
>>       <vendor>Intel</vendor>
>>       <topology sockets='1' cores='4' threads='1'/>
>>       <feature name='rdtscp'/>
>>       <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='pbe'/>
>>       <feature name='tm'/>
>>       <feature name='ht'/>
>>       <feature name='ss'/>
>>       <feature name='acpi'/>
>>       <feature name='ds'/>
>>       <feature name='vme'/>
>>     </cpu>
>>
>> and corresponding cpu features from vdsClient:
>>
>>    cpuCores = 4
>>    cpuFlags = fpu,vme,de,pse,tsc,msr,pae,mce,cx8,apic,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,xtopology,nonstop_tsc,aperfmperf,pni,
>>               dtes64,monitor,ds_cpl,vmx,smx,est,tm2,ssse3,cx16,xtpr,
>>               pdcm,sse4_1,sse4_2,popcnt,lahf_lm,ida,dts,tpr_shadow,vnmi,
>>               flexpriority,ept,vpid,model_Conroe,model_Penryn,
>>               model_Nehalem
>>    cpuModel = Intel(R) Xeon(R) CPU           X3430  @ 2.40GHz
>>    cpuSockets = 1
>>    cpuSpeed = 2394.132
>>
>>
>> So the system was updated to 6.4 using the continuous release repo.
>>
>> Installed rpms after update to 6.4 (6.3 + CR):
>>
>> libvirt.x86_64                0.10.2-18.el6
>> libvirt-client.x86_64         0.10.2-18.el6
>> libvirt-lock-sanlock.x86_64   0.10.2-18.el6
>> libvirt-python.x86_64         0.10.2-18.el6
>> vdsm.x86_64                   4.10.0-0.46.15.el6
>> vdsm-cli.noarch               4.10.0-0.46.15.el6
>> vdsm-python.x86_64            4.10.0-0.46.15.el6
>> vdsm-xmlrpc.noarch            4.10.0-0.46.15.el6
>> qemu-kvm.x86_64               2:0.12.1.2-2.355.el6_4_4.1
>>
>>
>> uname -a
>> Linux vh-test1.mydomain.com 2.6.32-358.0.1.el6.x86_64 #1 SMP Wed Feb 27
>> 06:06:45 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
>>
>> virsh capabilities on 6.4:
>>     <cpu>
>>       <arch>x86_64</arch>
>>       <model>Nehalem</model>
>>       <vendor>Intel</vendor>
>>       <topology sockets='1' cores='4' threads='1'/>
>>       <feature name='rdtscp'/>
>>       <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='pbe'/>
>>       <feature name='tm'/>
>>       <feature name='ht'/>
>>       <feature name='ss'/>
>>       <feature name='acpi'/>
>>       <feature name='ds'/>
>>       <feature name='vme'/>
>>     </cpu>
>>
>> and corresponding cpu features from vdsClient:
>>
>>    cpuCores = 4
>>    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,xtopology,nonstop_tsc,aperfmperf,pni,
>>               dtes64,monitor,ds_cpl,vmx,smx,est,tm2,ssse3,cx16,xtpr,
>>               pdcm,sse4_1,sse4_2,popcnt,lahf_lm,ida,dts,tpr_shadow,vnmi,
>>               flexpriority,ept,vpid,model_coreduo,model_Conroe
>>    cpuModel = Intel(R) Xeon(R) CPU           X3430  @ 2.40GHz
>>    cpuSockets = 1
>>    cpuSpeed = 2394.098
>>
>> Full outputs of virsh capabilities and vdsCaps are attached. The only
>> difference I can see is that 6.4 exposes one additional cpu flags (sep)
>> and this seems to break the cpu recognition of vdsm.
>>
>> Anyone has some hints on how to resolve or debug this further? What more
>> information can I provide to help?
> 
> If you boot the older kernel on the new install, does it work as it did
> previously?

Hi,

Good idea. I tried that, but it doesn't change a thing. Output from
virsh and vdsClient is the same as with 6.4 kernel.

Regards
Patrick

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