On 03/28/2017 05:04 PM, Jiří Sléžka wrote: > 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.
maybe the question should be: Should setting "Cluster CPU type" to "AMD Opteron G3" filter out tsc_scale cpu flag on newer AMD CPUs? I hope so. Is it correct? Cheers, Jiri > > 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 >> > > > > > _______________________________________________ > 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
