Hi Vinícius,

I am glad you've managed to solve it and thanks for sharing your findings.

Lucia

On Wed, Nov 25, 2020 at 9:07 PM Vinícius Ferrão <fer...@versatushpc.com.br>
wrote:

> Lucia, I ended figuring out.
>
>
>
> The culprit is that I was pinned with the wrong virt module; after running
> this commands I was able to have the CPU properly detected:
>
>
>
> # dnf module reset virt
>
> # dnf module enable virt:8.3
>
> # dnf upgrade –nobest
>
>
>
> I think virt was in 8.2.
>
>
>
> Thank you!
>
>
>
> *From:* Lucia Jelinkova <ljeli...@redhat.com>
> *Sent:* Monday, November 23, 2020 6:25 AM
> *To:* Vinícius Ferrão <fer...@versatushpc.com.br>
> *Cc:* users <users@ovirt.org>
> *Subject:* Re: [ovirt-users] EPYC CPU not being detected correctly on
> cluster
>
>
>
> Hi Vinícius,
>
>
>
> Thank you for the libvirt output - libvirt marked the EPYC CPU as not
> usable. Let's query qemu why that is.  You do not need an oVirt VM to do
> that, just any VM running on qemu, e.g. created by Virtual Machines Manager
> or you can follow the command from the answer here:
>
>
>
>
> https://unix.stackexchange.com/questions/309788/how-to-create-a-vm-from-scratch-with-virsh
>
>
>
> Then you can use the following commands:
>
> sudo virsh list --all
>
> sudo virsh qemu-monitor-command [your-vm's-name] --pretty
> '{"execute":"query-cpu-definitions"}'
>
>
>
> I do not know if this could be related to UEFI Firmware, lets check the
> qemu output first.
>
>
>
> Regards,
>
>
>
> Lucia
>
>
>
>
>
> On Fri, Nov 20, 2020 at 4:07 PM Vinícius Ferrão <fer...@versatushpc.com.br>
> wrote:
>
> Hi Lucia,
>
>
>
> I had to create an user for virsh:
>
> # saslpasswd2 -a libvirt test
>
> Password:
>
> Again (for verification):
>
>
>
> With that in mind, here’s the outputs:
>
>
>
> <domainCapabilities>
>
>   <path>/usr/libexec/qemu-kvm</path>
>
>   <domain>kvm</domain>
>
>   <machine>pc-i440fx-rhel7.6.0</machine>
>
>   <arch>x86_64</arch>
>
>   <vcpu max='240'/>
>
>   <iothreads supported='yes'/>
>
>   <os supported='yes'>
>
>     <enum name='firmware'/>
>
>     <loader supported='yes'>
>
>       <value>/usr/share/OVMF/OVMF_CODE.secboot.fd</value>
>
>       <enum name='type'>
>
>         <value>rom</value>
>
>         <value>pflash</value>
>
>       </enum>
>
>       <enum name='readonly'>
>
>         <value>yes</value>
>
>         <value>no</value>
>
>       </enum>
>
>       <enum name='secure'>
>
>         <value>no</value>
>
>       </enum>
>
>     </loader>
>
>   </os>
>
>   <cpu>
>
>     <mode name='host-passthrough' supported='yes'/>
>
>     <mode name='host-model' supported='yes'>
>
>       <model fallback='forbid'>EPYC-IBPB</model>
>
>       <vendor>AMD</vendor>
>
>       <feature policy='require' name='x2apic'/>
>
>       <feature policy='require' name='tsc-deadline'/>
>
>       <feature policy='require' name='hypervisor'/>
>
>       <feature policy='require' name='tsc_adjust'/>
>
>       <feature policy='require' name='clwb'/>
>
>       <feature policy='require' name='umip'/>
>
>       <feature policy='require' name='spec-ctrl'/>
>
>       <feature policy='require' name='stibp'/>
>
>       <feature policy='require' name='arch-capabilities'/>
>
>       <feature policy='require' name='ssbd'/>
>
>       <feature policy='require' name='xsaves'/>
>
>       <feature policy='require' name='cmp_legacy'/>
>
>       <feature policy='require' name='perfctr_core'/>
>
>       <feature policy='require' name='invtsc'/>
>
>       <feature policy='require' name='clzero'/>
>
>       <feature policy='require' name='wbnoinvd'/>
>
>       <feature policy='require' name='amd-ssbd'/>
>
>       <feature policy='require' name='virt-ssbd'/>
>
>       <feature policy='require' name='rdctl-no'/>
>
>       <feature policy='require' name='skip-l1dfl-vmentry'/>
>
>       <feature policy='require' name='mds-no'/>
>
>       <feature policy='require' name='pschange-mc-no'/>
>
>       <feature policy='disable' name='monitor'/>
>
>       <feature policy='disable' name='svm'/>
>
>     </mode>
>
>     <mode name='custom' supported='yes'>
>
>       <model usable='yes'>qemu64</model>
>
>       <model usable='yes'>qemu32</model>
>
>       <model usable='no'>phenom</model>
>
>       <model usable='yes'>pentium3</model>
>
>       <model usable='yes'>pentium2</model>
>
>       <model usable='yes'>pentium</model>
>
>       <model usable='no'>n270</model>
>
>       <model usable='yes'>kvm64</model>
>
>       <model usable='yes'>kvm32</model>
>
>       <model usable='no'>coreduo</model>
>
>       <model usable='no'>core2duo</model>
>
>       <model usable='no'>athlon</model>
>
>       <model usable='yes'>Westmere-IBRS</model>
>
>       <model usable='yes'>Westmere</model>
>
>       <model usable='no'>Skylake-Server-noTSX-IBRS</model>
>
>       <model usable='no'>Skylake-Server-IBRS</model>
>
>       <model usable='no'>Skylake-Server</model>
>
>       <model usable='no'>Skylake-Client-noTSX-IBRS</model>
>
>       <model usable='no'>Skylake-Client-IBRS</model>
>
>       <model usable='no'>Skylake-Client</model>
>
>       <model usable='yes'>SandyBridge-IBRS</model>
>
>       <model usable='yes'>SandyBridge</model>
>
>       <model usable='yes'>Penryn</model>
>
>       <model usable='no'>Opteron_G5</model>
>
>       <model usable='no'>Opteron_G4</model>
>
>       <model usable='yes'>Opteron_G3</model>
>
>       <model usable='yes'>Opteron_G2</model>
>
>       <model usable='yes'>Opteron_G1</model>
>
>       <model usable='yes'>Nehalem-IBRS</model>
>
>       <model usable='yes'>Nehalem</model>
>
>       <model usable='no'>IvyBridge-IBRS</model>
>
>       <model usable='no'>IvyBridge</model>
>
>       <model usable='no'>Icelake-Server-noTSX</model>
>
>       <model usable='no'>Icelake-Server</model>
>
>       <model usable='no'>Icelake-Client-noTSX</model>
>
>       <model usable='no'>Icelake-Client</model>
>
>       <model usable='no'>Haswell-noTSX-IBRS</model>
>
>       <model usable='no'>Haswell-noTSX</model>
>
>       <model usable='no'>Haswell-IBRS</model>
>
>       <model usable='no'>Haswell</model>
>
>       <model usable='no'>EPYC-IBPB</model>
>
>       <model usable='no'>EPYC</model>
>
>       <model usable='no'>Dhyana</model>
>
>      <model usable='no'>Cooperlake</model>
>
>       <model usable='yes'>Conroe</model>
>
>       <model usable='no'>Cascadelake-Server-noTSX</model>
>
>       <model usable='no'>Cascadelake-Server</model>
>
>       <model usable='no'>Broadwell-noTSX-IBRS</model>
>
>       <model usable='no'>Broadwell-noTSX</model>
>
>       <model usable='no'>Broadwell-IBRS</model>
>
>       <model usable='no'>Broadwell</model>
>
>       <model usable='yes'>486</model>
>
>     </mode>
>
>   </cpu>
>
>   <devices>
>
>     <disk supported='yes'>
>
>       <enum name='diskDevice'>
>
>         <value>disk</value>
>
>         <value>cdrom</value>
>
>         <value>floppy</value>
>
>         <value>lun</value>
>
>       </enum>
>
>       <enum name='bus'>
>
>         <value>ide</value>
>
>         <value>fdc</value>
>
>         <value>scsi</value>
>
>         <value>virtio</value>
>
>         <value>usb</value>
>
>         <value>sata</value>
>
>       </enum>
>
>       <enum name='model'>
>
>         <value>virtio</value>
>
>         <value>virtio-transitional</value>
>
>         <value>virtio-non-transitional</value>
>
>       </enum>
>
>     </disk>
>
>     <graphics supported='yes'>
>
>       <enum name='type'>
>
>         <value>sdl</value>
>
>         <value>vnc</value>
>
>         <value>spice</value>
>
>       </enum>
>
>     </graphics>
>
>     <video supported='yes'>
>
>       <enum name='modelType'>
>
>         <value>vga</value>
>
>         <value>cirrus</value>
>
>         <value>qxl</value>
>
>         <value>virtio</value>
>
>         <value>none</value>
>
>         <value>bochs</value>
>
>         <value>ramfb</value>
>
>       </enum>
>
>     </video>
>
>     <hostdev supported='yes'>
>
>       <enum name='mode'>
>
>         <value>subsystem</value>
>
>       </enum>
>
>       <enum name='startupPolicy'>
>
>         <value>default</value>
>
>         <value>mandatory</value>
>
>         <value>requisite</value>
>
>         <value>optional</value>
>
>       </enum>
>
>       <enum name='subsysType'>
>
>         <value>usb</value>
>
>         <value>pci</value>
>
>         <value>scsi</value>
>
>       </enum>
>
>       <enum name='capsType'/>
>
>       <enum name='pciBackend'>
>
>         <value>default</value>
>
>         <value>vfio</value>
>
>       </enum>
>
>     </hostdev>
>
>     <rng supported='yes'>
>
>       <enum name='model'>
>
>         <value>virtio</value>
>
>         <value>virtio-transitional</value>
>
>         <value>virtio-non-transitional</value>
>
>       </enum>
>
>       <enum name='backendModel'>
>
>         <value>random</value>
>
>         <value>egd</value>
>
>       </enum>
>
>     </rng>
>
>   </devices>
>
>   <features>
>
>     <gic supported='no'/>
>
>     <vmcoreinfo supported='yes'/>
>
>     <genid supported='yes'/>
>
>     <backingStoreInput supported='yes'/>
>
>     <backup supported='no'/>
>
>     <sev supported='yes'>
>
>       <cbitpos>47</cbitpos>
>
>       <reducedPhysBits>1</reducedPhysBits>
>
>     </sev>
>
>   </features>
>
> </domainCapabilities>
>
>
>
> Regarding the last two commands, I don’t have any VM running, since I
> cannot start anything on the engine.
>
>
>
> I’m starting to suspect that this may be something in the UEFI Firmware.
>
>
>
> Any thoughts?
>
>
>
> Thanks,
>
>
>
> *From:* Lucia Jelinkova <ljeli...@redhat.com>
> *Sent:* Friday, November 20, 2020 5:30 AM
> *To:* Vinícius Ferrão <fer...@versatushpc.com.br>
> *Cc:* users <users@ovirt.org>
> *Subject:* Re: [ovirt-users] EPYC CPU not being detected correctly on
> cluster
>
>
>
> Hi,
>
>
>
> oVirt CPU detection depends on libvirt (and that depends on qemu) CPU
> models. Could you please run the following command to see what libvirt
> reports?
>
>
>
> virsh domcapabilities
>
>
>
> That should give you the list of CPUs known to libvirt with a usability
> flag for each CPU.
>
>
>
> If you find out that the CPU is not usable by libvirt, you might want to
> dig deeper by querying quemu directly.
>
>
>
> Locate any VM running on the system by
>
> sudo virsh list --all
>
>
>
> Use the name of a VM in the following command:
>
> sudo virsh qemu-monitor-command [your-vm's-name] --pretty
> '{"execute":"query-cpu-definitions"}'
>
>
>
> That would give you the list of all CPUs supported by qemu and it will
> list all cpu's features that are not available on your system.
>
>
>
> Regards,
>
>
>
> Lucia
>
>
>
> On Thu, Nov 19, 2020 at 9:38 PM Vinícius Ferrão via Users <users@ovirt.org>
> wrote:
>
> Hi
>
>
>
> I’ve an strange issue with two hosts (not using the hypervisor image) with
> EPYC CPUs, on the engine I got this message:
>
>
>
> The host CPU does not match the Cluster CPU Type and is running in a
> degraded mode. It is missing the following CPU flags: model_EPYC. Please
> update the host CPU microcode or change the Cluster CPU Type.
>
>
>
> But it is an EPYC CPU, the firmware is updated to the latest versions, but
> for some reason oVirt does not like it.
>
>
>
> Here’s the relevant output from VDSM:
>
> "cpuCores": "128",
>
>     "cpuFlags":
> "ibs,vme,abm,sep,ssse3,perfctr_core,sse4_2,skip-l1dfl-vmentry,cx16,pae,misalignsse,avx2,smap,movbe,vgif,rdctl-no,extapic,clflushopt,de,sse4_1,xsaveerptr,perfctr_llc,fma,mca,sse,rdtscp,monitor,umip,mwaitx,cr8_legacy,mtrr,stibp,bmi2,pclmulqdq,amd-ssbd,lbrv,pdpe1gb,constant_tsc,vmmcall,f16c,ibrs,fsgsbase,invtsc,nopl,lm,3dnowprefetch,smca,ht,tsc_adjust,popcnt,cpb,bmi1,mmx,arat,aperfmperf,bpext,cqm_occup_llc,virt-ssbd,tce,pse,xsave,xgetbv1,topoext,sha_ni,amd_ppin,rdrand,cpuid,tsc_scale,extd_apicid,cqm,rep_good,tsc,sse4a,flushbyasid,pschange-mc-no,mds-no,ibpb,smep,clflush,tsc-deadline,fxsr,pat,avx,pfthreshold,v_vmsave_vmload,osvw,xsavec,cdp_l3,clzero,svm_lock,nonstop_tsc,adx,hw_pstate,spec-ctrl,arch-capabilities,xsaveopt,skinit,rdt_a,svm,rdpid,lahf_lm,fpu,rdseed,fxsr_opt,sse2,nrip_save,vmcb_clean,sme,cat_l3,cqm_mbm_local,irperf,overflow_recov,avic,mce,mmxext,msr,cx8,hypervisor,wdt,mba,nx,decodeassists,cmp_legacy,x2apic,perfctr_nb,succor,pni,xsaves,clwb,cqm_llc,syscall,apic,pge,npt,pse36,cmov,ssbd,pausefilter,sev,aes,wbnoinvd,cqm_mbm_total,spec_ctrl,model_qemu32,model_Opteron_G3,model_Nehalem-IBRS,model_qemu64,model_Conroe,model_kvm64,model_Penryn,model_SandyBridge,model_pentium,model_pentium2,model_kvm32,model_Nehalem,model_Opteron_G2,model_pentium3,model_Opteron_G1,model_SandyBridge-IBRS,model_486,model_Westmere-IBRS,model_Westmere",
>
>     "cpuModel": "AMD EPYC 7H12 64-Core Processor",
>
>     "cpuSockets": "2",
>
>     "cpuSpeed": "3293.405",
>
>     "cpuThreads": "256",
>
>
>
> Any ideia on why ou what to do to fix it?
>
>
>
> Thanks,
>
>
>
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