[libvirt] Information needed regarding libvirt error

[arun abhinay]

Hi Martin,

Thanks for your reply. I have already posted this query to libvirt list.
https://www.redhat.com/archives/libvirt-users/2013-August/msg00114.html

>>Wanting to post the link here, I've found
>>that even the machine name is the same, so it shouldn't be a problem for
>>you to find it.

Were you talking of the same link which is mentioned above.

Since the change of converting it from error to warning was done by you, i
have mailed a seperate query to you.  Yes we will make sure that such
queries are addresed to libvirt user list from next time.

>>This basically means that you have old qemu that doesn't support (I'm
>>guesing the command now) "query-vcpus" QMP command.

I have got below information from the file "qapi-schema.json" in qemu code.
##
# @query-cpus:
#
# Returns a list of information about each virtual CPU.
#
# Returns: a list of @CpuInfo for each virtual CPU
#
# Since: 0.14.0
##
{ 'command': 'query-cpus', 'returns': ['CpuInfo'] }
##

We were ealier using libvirt-1.0.2 and qemu-kvm-0.14.1-1, and the
"cpu-stats" command was working fine. We are facing this issue after
upgrading the libvirt version to 1.0.6.  But anyways it can be a problem
with old qemu version. We are trying to compile the new libvirt 1.0.6 with
qemu-1.6.0 but we are facing some  compiling issues because of
depedencies between latest qemu code with glib.

Please let us know your comments. Thanks in advance.

BR
Abhinay



On Tue, Aug 27, 2013 at 8:06 AM, Martin Kletzander <mkletzan at redhat.com>wrote:

> [cc'ing libvir-list]
>
> On 08/26/2013 05:59 PM, arun abhinay wrote:
> > Hi,
> >
> > Can you please consider this is an gentle reminder for my below request.
> >
> > Thanks
> > Abhinay
> >
> > On Fri, Aug 23, 2013 at 1:01 PM, arun abhinay <arun.abhinay at gmail.com
> >wrote:
> >
> >> Hi Martin/Peter,
> >>
>
> Hi,
>
> firstly, feel free to write to the list, not just particular people.
> There are many more people on the list that may help you.  Not
> mentioning that those people you write might not be available, don't
> have time etc.
>
> There was a similar question to the one you've asked, you could have
> checked that out before as well and reply on it.  There's also a patch
> fixing cpu-stats command, check it that helps.
>
> >> In reference to
> >> http://comments.gmane.org/gmane.comp.emulators.libvirt/62451
> >>
> >> We have created a VM on a qemu-kvm emulator using the domain.xml as
> >> mentioned in attachment. The starting of the VM is sucessful but we are
> >> facing issue while executing the command "cpu-stats <domain>".  While
> >> analysis we found below below log in libvirtd.log
> >>
> >> 2013-08-22 12:45:44.326+0000: 17554: warning :
> qemuSetupCgroupForVcpu:953
> >> : Unable to get vcpus' pids
> >>
>
> This basically means that you have old qemu that doesn't support (I'm
> guesing the command now) "query-vcpus" QMP command.  The problem
> probably lies somewhere else, even though my change might have caused
> the other part to behave differently.
>
> >> The complete logs while starting VM and while executing the "cpu-stats"
> >> command are attached with this mail for reference. Can you please check
> and
> >> provide us some inputs or pointers to get "cpu-stats" command working.
> >>
> >> I am new to using libvirt. Your inputs would be of great help to us.
> >>
> >> Libvrit and qemu-kvm verisons used are mentioned below
> >> libvirt-1.0.6-1
> >> qemu-kvm-0.14.1-1
> >>
> >> <<CLA_new-0.xml >> --> Domain.xml used to define VM
> >> << libvirt_testing_starting_VG.log >>  --> Log while staring VM
> >> <<libvirt_testing_cpu_stats.log >>  ---> Log while executing command
> >> cpu_stats.
> >>
>
> According to the logs, it looks like it's completely the same like a
> question already asked...  Wanting to post the link here, I've found
> that even the machine name is the same, so it shouldn't be a problem for
> you to find it.
>
> I'm looking  at the issue now, so I'll see what I can do, but maybe in
> the meantime sombody else will reply.
>
> Martin
>
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