On Tue, Feb 01, 2022 at 08:45:51PM +0100, Martin Perina wrote:
> 
> 
> On Tue, Feb 1, 2022 at 8:27 PM Richard W.M. Jones <rjo...@redhat.com> wrote:
> 
> 
>     2022-02-01 19:05:01,952Z ERROR
>     [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
>     (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-19)
>     [330886aa] EVENT_ID: CPU_TYPE_UNSUPPORTED_IN_THIS_CLUSTER_VERSION(156),
>     Host ovirt4410-host moved to Non-Operational state as host CPU type is not
>     supported in this cluster compatibility version or is not supported at all
> 
>     The host is a nested VM running on old hardware.  I don't care that
>     it's not supported - this is just for testing copying and it'll
>     literally never even need to run a VM.
> 
>     Is there a way to ignore this and continue?
> 
> 
> Hi,
>
> You need to create a custom DC and a cluster with lower
> compatibility level to be able to use older CPUs.
>
> You can take a look at supported CPUs for each cluster level using
> ServerCPUList config option:
> 
> https://github.com/oVirt/ovirt-engine/blob/master/packaging/dbscripts/upgrade/pre_upgrade/0000_config.sql#L1125

OK that operation is underway.  I selected CPU type "Nehalem", that
being an ancient Intel CPU.  The hardware is AMD and there were no AMD
options.  I'll see if it installs anyway.

> What is your hypervisor CPU?

The oVirt host is a VM with an interesting choice of guest CPU now I
look at it:

processor : 0
vendor_id : AuthenticAMD
cpu family  : 23
model         : 49
model name    : AMD EPYC-Rome Processor
stepping      : 0
microcode     : 0x1000065
cpu MHz         : 3792.872
cache size      : 512 KB
physical id     : 0
siblings : 1
core id    : 0
cpu cores  : 1
apicid       : 0
initial apicid : 0
fpu            : yes
fpu_exception  : yes
cpuid level    : 13
wp             : yes
flags            : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb 
rdtscp lm rep_good nopl cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 
fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx 
f16c rdrand hypervisor lahf_lm cmp_legacy cr8_legacy abm sse4a misalignsse 
3dnowprefetch osvw topoext perfctr_core ssbd ibpb stibp vmmcall fsgsbase 
tsc_adjust bmi1 avx2 smep bmi2 rdseed adx smap clflushopt clwb sha_ni xsaveopt 
xsavec xgetbv1 xsaves clzero xsaveerptr wbnoinvd arat umip rdpid 
arch_capabilities
bugs               : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
bogomips           : 7585.74
TLB size           : 1024 4K pages
clflush size       : 64
cache_alignment    : 64
address sizes      : 40 bits physical, 48 bits virtual
power management:

--- and hypervisor CPU:

processor      : 23
vendor_id      : AuthenticAMD
cpu family     : 23
model            : 113
model name       : AMD Ryzen 9 3900X 12-Core Processor
stepping         : 0
microcode        : 0x8701013
cpu MHz            : 2200.000
cache size         : 512 KB
physical id        : 0
siblings : 24
core id    : 14
cpu cores  : 12
apicid       : 29
initial apicid : 29
fpu            : yes
fpu_exception  : yes
cpuid level    : 16
wp             : yes
flags            : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb 
rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf 
rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave 
avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 
3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext 
perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibpb stibp vmmcall 
fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni 
xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total 
cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd arat npt lbrv svm_lock 
nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter 
pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip rdpid overflow_recov 
succor smca sme sev sev_es
bugs               : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
bogomips           : 7585.86
TLB size           : 3072 4K pages
clflush size       : 64
cache_alignment    : 64
address sizes      : 43 bits physical, 48 bits virtual
power management: ts ttp tm hwpstate cpb eff_freq_ro [13] [14]

Rich.

> Regards,
> Martin
> 
> 
> 
>     Rich.
> 
>     --
>     Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/
>     ~rjones
>     Read my programming and virtualization blog: http://rwmj.wordpress.com
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> 
> 
> 
> --
> Martin Perina
> Manager, Software Engineering
> Red Hat Czech s.r.o.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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