'migrate' says it worked but in reality it did not - centOS 9
Hi guys.
I have a peculiar situation where between boxes:
C->A
-> $ virsh migrate --unsafe --live c8kubermaster1
qemu+ssh://10.1.1.99/system
-> $ echo $?
0
but above does _not_ happen, instead!! VM was stopped in
started, but _not_ migrated LIVE
A->C
-> $ virsh migrate --unsafe --live c8kubermaster1
qemu+ssh://10.1.1.100/system
-> $ echo $?
0
indeed VM migrates live.
box A & C have virtually identical OS stack,
HW difference is:
C = Ryzen 5 5600G
A = Ryzen 5 3600
domain XML snippet where I think it matters:
...
</metadata>
<memory unit='GiB'>4</memory>
<currentMemory unit='GiB'>4</currentMemory>
<vcpu placement='static'>2</vcpu>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch='x86_64'
machine='pc-i440fx-rhel7.6.0'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
</features>
<cpu mode='custom' match='exact' check='full'>
<model fallback='forbid'>EPYC-IBPB</model>
<feature policy='require' name='ibpb'/>
<feature policy='require' name='ssbd'/>
<feature policy='require' name='virt-ssbd'/>
<feature policy='disable' name='monitor'/>
<feature policy='require' name='x2apic'/>
<feature policy='require' name='hypervisor'/>
<feature policy='disable' name='svm'/>
<feature policy='require' name='topoext'/>
</cpu>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='file' device='disk'>
...
Initially I submitted a BZ against 'PCS' but continued to
filled with it and I find 'libvirt' might be the
culprit(also?) here.
There is not much in logs, certainly nothing (with default
verbosity) in virtqemud.service
Is it that VM gets migrated but then is restarted on
'migrate_to' host? if so then why?
How to start troubleshooting such 'monstrosity'? - all
suggestions appreciated.
many thanks, L.