<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 28 Mar 2017, at 14:54, Gianluca Cecchi <<a href="mailto:gianluca.cecchi@gmail.com" class="">gianluca.cecchi@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote">On Tue, Mar 28, 2017 at 1:50 PM, Michal Skrivanek <span dir="ltr" class=""><<a href="mailto:michal.skrivanek@redhat.com" target="_blank" class="">michal.skrivanek@redhat.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="gmail-"><br class="">
> On 28 Mar 2017, at 13:41, Jiří Sléžka <<a href="mailto:jiri.slezka@slu.cz" class="">jiri.slezka@slu.cz</a>> wrote:<br class="">
><br class="">
> On 03/28/2017 12:34 AM, Jiří Sléžka wrote:<br class="">
>> Hi all,<br class="">
>><br class="">
>> I have just upgraded ovirt manager from 4.1.0 to 4.1.1, then I have<br class="">
>> upgraded one host. After reboot and activation of this host some vms<br class="">
>> started to migrate here.<br class="">
>><br class="">
>> Some time after migration CPU of this vms go to 100% and vms become<br class="">
>> unreachable.<br class="">
>><br class="">
>> There is /var/log/libvirt/qemu/hypnos.<wbr class="">log (hypnos is one of this vms)<br class="">
>> <a href="https://pastebin.com/U30xfBMJ" rel="noreferrer" target="_blank" class="">https://pastebin.com/U30xfBMJ</a><br class="">
>><br class="">
>> Powering off and starting again solve this but I would like to have a<br class="">
>> glue what is happening.<br class="">
>><br class="">
>> I suspect this line<br class="">
>><br class="">
>> 2017-03-27T22:09:23.746710Z qemu-kvm: warning: TSC frequency mismatch<br class="">
>> between VM (2600031 kHz) and host (2100024 kHz), and TSC scaling unavailable<br class="">
>><br class="">
>> Original host uses "AMD Opteron(TM) Processor 6238" with "cpu MHz:<br class="">
>> 2600.113" and upgraded host uses "AMD Opteron(tm) Processor 6172" with<br class="">
>> "cpu MHz: 2100.097".<br class="">
><br class="">
> It looks like it isn't problem with 4.1.1 at all.<br class="">
><br class="">
> There is just missing tsc_scale cpu flag on our older AMD CPUs...<br class="">
><br class="">
> <a href="http://unix.stackexchange.com/questions/296636/100-cpu-utilisation-and-hang-after-virsh-migrate" rel="noreferrer" target="_blank" class="">http://unix.stackexchange.com/<wbr class="">questions/296636/100-cpu-<wbr class="">utilisation-and-hang-after-<wbr class="">virsh-migrate</a><br class="">
><br class="">
> This is probably unsolvable hw problem, right?<br class="">
<br class="">
</span>And this is without host-model CPU type?<br class="">
That 6172 should be Opteron G3…is that what you have set in your Cluster?<br class="">
<br class="">
Thanks,<br class="">
michal<br class="">
<div class="gmail-HOEnZb"><div class="gmail-h5"><br class=""><br class=""></div></div></blockquote><div class=""><br class=""></div><div class="">Should I care about it too?</div><div class="">In my case on my AMD hypervisors:</div></div><br class=""></div><div class="gmail_extra"><div class="gmail_extra">[g.cecchi@ovmsrv06 ~]$ cat /proc/cpuinfo | grep tsc_</div><div class="gmail_extra">[g.cecchi@ovmsrv06 ~]$</div></div><div class="gmail_extra"><br class=""></div><div class="gmail_extra"><div class="gmail_extra">model name<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>: Dual-Core AMD Opteron(tm) Processor 8222</div><div class="">flags<span class="gmail-Apple-tab-span" style="white-space:pre"> </span>: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow art rep_good nopl extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy<br class=""></div><div class=""><br class=""></div><div class="">The related cluster is set as "AMD Opteron G2”</div></div></div></div></blockquote><div><br class=""></div>I suppose not unless you have newer Opterons. And if you do it’s a matter of testing it I guess, whether the enforced “AMD Opteron G2” on a newer Opteron works correctly. </div><div><br class=""></div><div>Thanks,</div><div>michal</div><div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class=""><br class=""></div><div class="">Thanks in advance,</div><div class="">Gianluca</div></div></div>
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