Hi,

for any of you who wants AMD EPYC support right now (its a hack, not proper tested!):

1) Make sure your node and your engine are running under RedHat/CentOS 7.5

[root@ovirt ~]# cat /etc/redhat-release
CentOS Linux release 7.5.1804 (Core)

2) Get your PostgreSQL credentials

 less /etc/ovirt-engine/engine.conf.d/10-setup-database.conf

3) Make the PostgreSQL libs available, so that we can start the PostgreSQL client later.

echo '/opt/rh/rh-postgresql95/root/lib64/' >/etc/ld.so.conf.d/postgresql_opt.conf

4) Become PostgreSQL user.

su - postgres

5) Connect to the PostgreSQL database.

/opt/rh/rh-postgresql95/root/bin/psql -h localhost -p 5432 -U engine -W

6) Run the database update:

select fn_db_update_config_value('ServerCPUList', '3:Intel Conroe Family:vmx,nx,model_Conroe:Conroe:x86_64; 4:Intel Penryn Family:vmx,nx,model_Penryn:Penryn:x86_64; 5:Intel Nehalem Family:vmx,nx,model_Nehalem:Nehalem:x86_64; 6:Intel Nehalem IBRS Family:vmx,nx,spec_ctrl,model_Nehalem:Nehalem,+spec-ctrl:x86_64; 7:Intel Nehalem IBRS SSBD Family:vmx,nx,spec_ctrl,ssbd,model_Nehalem:Nehalem,+spec-ctrl,+ssbd:x86_64; 8:Intel Westmere Family:aes,vmx,nx,model_Westmere:Westmere:x86_64; 9:Intel Westmere IBRS Family:aes,vmx,nx,spec_ctrl,model_Westmere:Westmere,+spec-ctrl:x86_64; 10:Intel Westmere IBRS SSBD Family:aes,vmx,nx,spec_ctrl,ssbd,model_Westmere:Westmere,+pcid,+spec-ctrl,+ssbd:x86_64; 11:Intel SandyBridge Family:vmx,nx,model_SandyBridge:SandyBridge:x86_64; 12:Intel SandyBridge IBRS Family:vmx,nx,spec_ctrl,model_SandyBridge:SandyBridge,+spec-ctrl:x86_64; 13:Intel SandyBridge IBRS SSBD Family:vmx,nx,spec_ctrl,ssbd,model_SandyBridge:SandyBridge,+pcid,+spec-ctrl,+ssbd:x86_64; 14:Intel Haswell-noTSX Family:vmx,nx,model_Haswell-noTSX:Haswell-noTSX:x86_64; 15:Intel Haswell-noTSX IBRS Family:vmx,nx,spec_ctrl,model_Haswell-noTSX:Haswell-noTSX,+spec-ctrl:x86_64; 16:Intel Haswell-noTSX IBRS SSBD Family:vmx,nx,spec_ctrl,ssbd,model_Haswell-noTSX:Haswell-noTSX,+spec-ctrl,+ssbd:x86_64; 17:Intel Haswell Family:vmx,nx,model_Haswell:Haswell:x86_64; 18:Intel Haswell IBRS Family:vmx,nx,spec_ctrl,model_Haswell:Haswell,+spec-ctrl:x86_64; 19:Intel Haswell IBRS SSBD Family:vmx,nx,spec_ctrl,ssbd,model_Haswell:Haswell,+spec-ctrl,+ssbd:x86_64; 20:Intel Broadwell-noTSX Family:vmx,nx,model_Broadwell-noTSX:Broadwell-noTSX:x86_64; 21:Intel Broadwell-noTSX IBRS Family:vmx,nx,spec_ctrl,model_Broadwell-noTSX:Broadwell-noTSX,+spec-ctrl:x86_64; 22:Intel Broadwell-noTSX IBRS SSBD Family:vmx,nx,spec_ctrl,ssbd,model_Broadwell-noTSX:Broadwell-noTSX,+spec-ctrl,+ssbd:x86_64; 23:Intel Broadwell Family:vmx,nx,model_Broadwell:Broadwell:x86_64; 24:Intel Broadwell IBRS Family:vmx,nx,spec_ctrl,model_Broadwell:Broadwell,+spec-ctrl:x86_64; 25:Intel Broadwell IBRS SSBD Family:vmx,nx,spec_ctrl,ssbd,model_Broadwell:Broadwell,+spec-ctrl,+ssbd:x86_64; 26:Intel Skylake Client Family:vmx,nx,model_Skylake-Client:Skylake-Client:x86_64; 27:Intel Skylake Client IBRS Family:vmx,nx,spec_ctrl,model_Skylake-Client:Skylake-Client,+spec-ctrl:x86_64; 28:Intel Skylake Client IBRS SSBD Family:vmx,nx,spec_ctrl,ssbd,model_Skylake-Client:Skylake-Client,+spec-ctrl,+ssbd:x86_64; 29:Intel Skylake Server Family:vmx,nx,model_Skylake-Server:Skylake-Server:x86_64; 30:Intel Skylake Server IBRS Family:vmx,nx,spec_ctrl,model_Skylake-Server:Skylake-Server,+spec-ctrl:x86_64; 31:Intel Skylake Server IBRS SSBD Family:vmx,nx,spec_ctrl,ssbd,model_Skylake-Server:Skylake-Server,+spec-ctrl,+ssbd:x86_64; 2:AMD Opteron G1:svm,nx,model_Opteron_G1:Opteron_G1:x86_64; 3:AMD Opteron G2:svm,nx,model_Opteron_G2:Opteron_G2:x86_64; 4:AMD Opteron G3:svm,nx,model_Opteron_G3:Opteron_G3:x86_64; 5:AMD Opteron G4:svm,nx,model_Opteron_G4:Opteron_G4:x86_64; 6:AMD Opteron G5:svm,nx,model_Opteron_G5:Opteron_G5:x86_64; 7:AMD EPYC:svm,nx,model_EPYC:EPYC:x86_64; 8:AMD EPYC IBPB:svm,nx,ibpb,model_EPYC:EPYC,+ibpb:x86_64; 3:IBM POWER8:powernv,model_POWER8:POWER8:ppc64; 4:IBM POWER9:powernv,model_POWER9:POWER9:ppc64; 2:IBM z114, z196:sie,model_z196-base:z196-base:s390x; 3:IBM zBC12, zEC12:sie,model_zEC12-base:zEC12-base:s390x; 4:IBM z13s, z13:sie,model_z13-base:z13-base:s390x; 5:IBM z14:sie,model_z14-base:z14-base:s390x;', '4.2');

7) Exit PostgreSQL and the PostgreSQL user, restart the ovirt-engine

systemctl restart ovirt-engine

After that we are able to use the AMD EPYC processor model.

[root@virtual-machine ~]# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 23
model           : 1
model name      : AMD EPYC Processor
stepping        : 2
microcode       : 0x1000065
cpu MHz         : 2399.998
cache size      : 512 KB
physical id     : 0
siblings        : 8
core id         : 0
cpu cores       : 8
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 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm art rep_good nopl extd_apicid eagerfpu pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw retpoline_amd vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 arat
bogomips        : 4799.99
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 48 bits physical, 48 bits virtual
power management:

Keep in mind that next database update will overwrite the changes that you made, so maybe apply this again.


Greeting Tobias


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