On 03/28/2017 01:50 PM, Michal Skrivanek wrote: > >> On 28 Mar 2017, at 13:41, Jiří Sléžka <jiri.sle...@slu.cz> wrote: >> >> On 03/28/2017 12:34 AM, Jiří Sléžka wrote: >>> Hi all, >>> >>> I have just upgraded ovirt manager from 4.1.0 to 4.1.1, then I have >>> upgraded one host. After reboot and activation of this host some vms >>> started to migrate here. >>> >>> Some time after migration CPU of this vms go to 100% and vms become >>> unreachable. >>> >>> There is /var/log/libvirt/qemu/hypnos.log (hypnos is one of this vms) >>> https://pastebin.com/U30xfBMJ >>> >>> Powering off and starting again solve this but I would like to have a >>> glue what is happening. >>> >>> I suspect this line >>> >>> 2017-03-27T22:09:23.746710Z qemu-kvm: warning: TSC frequency mismatch >>> between VM (2600031 kHz) and host (2100024 kHz), and TSC scaling unavailable >>> >>> Original host uses "AMD Opteron(TM) Processor 6238" with "cpu MHz: >>> 2600.113" and upgraded host uses "AMD Opteron(tm) Processor 6172" with >>> "cpu MHz: 2100.097". >> >> It looks like it isn't problem with 4.1.1 at all. >> >> There is just missing tsc_scale cpu flag on our older AMD CPUs... >> >> http://unix.stackexchange.com/questions/296636/100-cpu-utilisation-and-hang-after-virsh-migrate >> >> This is probably unsolvable hw problem, right? > > And this is without host-model CPU type? > That 6172 should be Opteron G3…is that what you have set in your Cluster?
Yes, Cluster CPU type is set to AMD Opteron G3. 6172 should be G3 (we have 3 of 4 hosts in this cluster with 6172 CPU), 6238 is probably G4 but forced (I hoped) to G3. Problem occurs only when migrating from 6238 CPU to 6172. Cheers, Jiri > > Thanks, > michal > >> >> Cheers, >> >> Jiri >> >>> >>> Cheers, >>> >>> Jiri >>> >>> >>> >>> _______________________________________________ >>> Users mailing list >>> Users@ovirt.org >>> http://lists.ovirt.org/mailman/listinfo/users >>> >> >> >> _______________________________________________ >> Users mailing list >> Users@ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >
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