10:22 a.m.
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On 28 Mar 2017, at 14:54, Gianluca Cecchi
<gianluca.cecchi(a)gmail.com> =
wrote:
=20
On Tue, Mar 28, 2017 at 1:50 PM, Michal Skrivanek =
<michal.skrivanek(a)redhat.com
<mailto:michal.skrivanek@redhat.com>> =
wrote:
=20
> On 28 Mar 2017, at 13:41, Ji=C5=99=C3=AD Sl=C3=A9=C5=BEka =
<jiri.slezka(a)slu.cz <mailto:jiri.slezka@slu.cz>> wrote:
>
> On 03/28/2017 12:34 AM, Ji=C5=99=C3=AD Sl=C3=A9=C5=BEka 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
<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-han=
g-after-virsh-migrate =
<http://unix.stackexchange.com/questions/296636/100-cpu-utilisation-and-ha=
ng-after-virsh-migrate>
>
> This is probably unsolvable hw problem, right?
=20
And this is without host-model CPU type?
That 6172 should be Opteron G3=E2=80=A6is that what you have set in =
your
Cluster?
=20
Thanks,
michal
=20
=20
=20
Should I care about it too?
In my case on my AMD hypervisors:
=20
[g.cecchi@ovmsrv06 ~]$ cat /proc/cpuinfo | grep tsc_
[g.cecchi@ovmsrv06 ~]$
=20
model name : Dual-Core AMD Opteron(tm) Processor 8222
flags : 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
=20
The related cluster is set as "AMD Opteron G2=E2=80=9D
I suppose not unless you have newer Opterons. And if you do it=E2=80=99s =
a matter of testing it I guess, whether the enforced =E2=80=9CAMD =
Opteron G2=E2=80=9D on a newer Opteron works correctly.=20
Thanks,
michal
=20
Thanks in advance,
Gianluca
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<html><head><meta http-equiv=3D"Content-Type"
content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><br class=3D""><div><blockquote
type=3D"cite" class=3D""><div =
class=3D"">On 28 Mar 2017, at 14:54, Gianluca Cecchi <<a =
href=3D"mailto:gianluca.cecchi@gmail.com" =
class=3D"">gianluca.cecchi(a)gmail.com</a>&gt;
wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div
dir=3D"ltr" =
class=3D""><div class=3D"gmail_extra"><div
class=3D"gmail_quote">On Tue, =
Mar 28, 2017 at 1:50 PM, Michal Skrivanek <span dir=3D"ltr" =
class=3D""><<a
href=3D"mailto:michal.skrivanek@redhat.com" =
target=3D"_blank"
class=3D"">michal.skrivanek(a)redhat.com</a>&gt;</span> =
wrote:<br class=3D""><blockquote class=3D"gmail_quote"
style=3D"margin:0px=
0px 0px 0.8ex;border-left:1px solid =
rgb(204,204,204);padding-left:1ex"><span class=3D"gmail-"><br
class=3D"">
> On 28 Mar 2017, at 13:41, Ji=C5=99=C3=AD Sl=C3=A9=C5=BEka <<a =
href=3D"mailto:jiri.slezka@slu.cz"
class=3D"">jiri.slezka(a)slu.cz</a>&gt; =
wrote:<br class=3D"">
><br class=3D"">
> On 03/28/2017 12:34 AM, Ji=C5=99=C3=AD Sl=C3=A9=C5=BEka wrote:<br =
class=3D"">
>> Hi all,<br class=3D"">
>><br class=3D"">
>> I have just upgraded ovirt manager from 4.1.0 to 4.1.1, then I =
have<br class=3D"">
>> upgraded one host. After reboot and activation of this host =
some vms<br class=3D"">
>> started to migrate here.<br class=3D"">
>><br class=3D"">
>> Some time after migration CPU of this vms go to 100% and vms =
become<br class=3D"">
>> unreachable.<br class=3D"">
>><br class=3D"">
>> There is /var/log/libvirt/qemu/hypnos.<wbr class=3D"">log
=
(hypnos is one of this vms)<br class=3D"">
>> <a href=3D"https://pastebin.com/U30xfBMJ"
rel=3D"noreferrer" =
target=3D"_blank"
class=3D"">https://pastebin.com/U30xfBMJ</a><br =
class=3D"">
>><br class=3D"">
>> Powering off and starting again solve this but I would like to =
have a<br class=3D"">
>> glue what is happening.<br class=3D"">
>><br class=3D"">
>> I suspect this line<br class=3D"">
>><br class=3D"">
>> 2017-03-27T22:09:23.746710Z qemu-kvm: warning: TSC frequency =
mismatch<br class=3D"">
>> between VM (2600031 kHz) and host (2100024 kHz), and TSC =
scaling unavailable<br class=3D"">
>><br class=3D"">
>> Original host uses "AMD Opteron(TM) Processor 6238" with
"cpu =
MHz:<br class=3D"">
>> 2600.113" and upgraded host uses "AMD Opteron(tm) Processor =
6172" with<br class=3D"">
>> "cpu MHz: 2100.097".<br class=3D"">
><br class=3D"">
> It looks like it isn't problem with 4.1.1 at all.<br
class=3D"">
><br class=3D"">
> There is just missing tsc_scale cpu flag on our older AMD =
CPUs...<br class=3D"">
><br class=3D"">
> <a =
href=3D"http://unix.stackexchange.com/questions/296636/100-cpu-utili...
-and-hang-after-virsh-migrate" rel=3D"noreferrer"
target=3D"_blank" =
class=3D"">http://unix.stackexchange.com/<wbr =
class=3D"">questions/296636/100-cpu-<wbr =
class=3D"">utilisation-and-hang-after-<wbr
class=3D"">virsh-migrate</a><br=
class=3D"">
><br class=3D"">
> This is probably unsolvable hw problem, right?<br class=3D"">
<br class=3D"">
</span>And this is without host-model CPU type?<br class=3D"">
That 6172 should be Opteron G3=E2=80=A6is that what you have set in your =
Cluster?<br class=3D"">
<br class=3D"">
Thanks,<br class=3D"">
michal<br class=3D"">
<div class=3D"gmail-HOEnZb"><div class=3D"gmail-h5"><br
class=3D""><br =
class=3D""></div></div></blockquote><div
class=3D""><br =
class=3D""></div><div class=3D"">Should I care about it
too?</div><div =
class=3D"">In my case on my AMD
hypervisors:</div></div><br =
class=3D""></div><div class=3D"gmail_extra"><div =
class=3D"gmail_extra">[g.cecchi@ovmsrv06 ~]$ cat /proc/cpuinfo | grep =
tsc_</div><div class=3D"gmail_extra">[g.cecchi@ovmsrv06 =
~]$</div></div><div class=3D"gmail_extra"><br
class=3D""></div><div =
class=3D"gmail_extra"><div class=3D"gmail_extra">model
name<span =
class=3D"gmail-Apple-tab-span"
style=3D"white-space:pre"> </span>: =
Dual-Core AMD Opteron(tm) Processor 8222</div><div
class=3D"">flags<span =
class=3D"gmail-Apple-tab-span" style=3D"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=3D""></div><div
class=3D""><br =
class=3D""></div><div class=3D"">The related cluster is
set as "AMD =
Opteron
G2=E2=80=9D</div></div></div></div></blockquote><div><br
=
class=3D""></div>I suppose not unless you have newer Opterons. And if
=
you do it=E2=80=99s a matter of testing it I guess, whether the enforced =
=E2=80=9CAMD Opteron G2=E2=80=9D on a newer Opteron works =
correctly. </div><div><br =
class=3D""></div><div>Thanks,</div><div>michal</div><div><br
=
class=3D""><blockquote type=3D"cite"
class=3D""><div class=3D""><div =
dir=3D"ltr" class=3D""><div
class=3D"gmail_extra"><div class=3D""><br =
class=3D""></div><div class=3D"">Thanks in
advance,</div><div =
class=3D"">Gianluca</div></div></div>
</div></blockquote></div><br
class=3D""></body></html>=
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