Description of problem:
Related to https://bugzilla.redhat.com/show_bug.cgi?id=2138381
RHOSP 16.2.4
nova-compute container does not start and shows in logs "nova.exception.InvalidCPUInfo: Configured CPU model: Icelake-Server-noTSX is not compatible with host CPU. Please correct your config and try again. Unacceptable CPU info: CPU doesn't have compatibility."
Customer tried suggested configuration:
remove:
~~~
cpu_model_extra_flags = -mpx
~~~
and keep only:
~~~
cpu_model=Skylake-Server-noTSX-IBRS
~~~
And tried the following combinations:
~~~
cpu_model_extra_flags = -mpx
cpu_model=Icelake-Server-noTSX
~~~
and
~~~
#cpu_model_extra_flags = -mpx
cpu_model=Icelake-Server-noTSX
~~~
Neither combination works.
The only thing that works is when manualy removed the cpu flag mpx from the file /usr/share/libvirt/cpu_map/x86_Icelake-Server-noTSX.xml
Like this:
podman cp nova_compute:/usr/share/libvirt/cpu_map/x86_Icelake-Server-noTSX.xml .
vi x86_Icelake-Server-noTSX.xml
--> remove the line <feature name='mpx'/>
podman cp x86_Icelake-Server-noTSX.xml nova_compute:/usr/share/libvirt/cpu_map/x86_Icelake-Server-noTSX.xml
podman cp x86_Icelake-Server-noTSX.xml nova_libvirt:/usr/share/libvirt/cpu_map/x86_Icelake-Server-noTSX.xml
podman restart nova_libvirt
podman restart nova_compute
and nova.conf is like:
~~~
#cpu_model_extra_flags = -mpx
cpu_model=Icelake-Server-noTSX
~~~
Sosreports and more data attached to related case.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Low: Red Hat OpenStack Platform 16.2 (openstack-nova) security update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2023:1948
Comment 38Red Hat Bugzilla
2023-09-19 04:32:10 UTC
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days