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

Itamar Heim iheim at redhat.com
Mon Mar 4 20:52:05 UTC 2013


On 04/03/2013 19:03, 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?
>
> Best regards
> Patrick
>
>
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>

seems like a vdsm issue - can you check if you have this patch (not sure 
its related):

commit 558994f8ffe030acd1b851dfd074f3417681337b
Author: Mark Wu <wudxw at linux.vnet.ibm.com>
Date:   Tue Oct 9 11:18:10 2012 +0800

     Fix a bug in the naming convertion of cpu feature 'sse4_x'

     The list slice opertion missed the last character. It caused
     the feature name couldn't get chance to be converted into
     libvirt's naming.

     Change-Id: Ia241b09c96fa16441ba9421f61a2f9a417f0d978
     Signed-off-by: Mark Wu <wudxw at linux.vnet.ibm.com>
     Reviewed-on: http://gerrit.ovirt.org/8413
     Reviewed-by: Dan Kenigsberg <danken at redhat.com>
     Reviewed-by: Michal Skrivanek <michal.skrivanek at redhat.com>

diff --git a/vdsm/libvirtvm.py b/vdsm/libvirtvm.py
index 64a3b6b..bd43b56 100644
--- a/vdsm/libvirtvm.py
+++ b/vdsm/libvirtvm.py
@@ -735,7 +735,7 @@ class _DomXML:

          for feature in features[1:]:
              # convert Linux name of feature to libvirt
-            if feature[1:5] == 'sse4_':
+            if feature[1:6] == 'sse4_':
                  feature = feature[0] + 'sse4.' + feature[6:]

              f = self.doc.createElement('feature')




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