Created attachment 1894455 [details]
logs

Description of problem:happens to isolate_thread VMs with (sockets number) = (host socket number) and (cores number) = (host sockets -1)


Version-Release number of selected component (if applicable):
ovirt-engine-4.5.1.2-0.11.el8ev.noarch

How reproducible: 100%


Steps to Reproduce:

1. on host with topology like 
CPU(s):              32
On-line CPU(s) list: 0-31
Thread(s) per core:  2
Core(s) per socket:  8
Socket(s):           2
NUMA node(s):        2

configure a VM 

    <cpu>
        <topology>
            <sockets>2</sockets>
            <cores>7</cores>
            <threads>1</threads>
        </topology>
    </cpu>
    <cpu_pinning_policy>isolate_threads</cpu_pinning_policy>

2. run the VM


Actual results:
Fails to start
2022-07-04 11:29:47,767+03 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-54) [e1cd692d-2040-4539-b9fb-2cdf452f2c50] EVENT_ID: USER_FAILED_RUN_VM(54), Failed to run VM golden_env_mixed_virtio_0 due to a failed validation: [Cannot run VM. There is no host that satisfies current scheduling constraints. See below for details:, The host host_mixed_2 did not satisfy internal filter CpuPinning because it doesn't have enough CPUs for the dedicated CPU policy that the VM is set with.., The host host_mixed_2 did not satisfy internal filter CpuPinning because it doesn't have enough CPUs for the dedicated CPU policy that the VM is set with.., The host host_mixed_2 did not satisfy internal filter CpuPinning because it doesn't have enough CPUs for the dedicated CPU policy that the VM is set with..] (User: admin@internal-authz).


Expected results:
must start since the topology fits the host from the point of isolated threads policy

Additional info: