libvirt users - Jul 2013 - Re: How to monitor a lxc container started by libvirt_lxc from inside ?

Hi Guys,
When I created a lxc container by libvirt, I logged into the lxc container and
noticed that info under /proc/ dir did not match the lxc container resource.  Is
the /proc dir in lxc container just showing the same thing as the lxc host? If I
want to monitor the realtime resource usage inside the lxc container, What
should I do?
 				
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Best regards!
GuanQiang
2013-07-23

On Tue, Jul 23, 2013 at 04:56:30PM +0800, hzguanqiang
wrote:
> Hi Guys,
> When I created a lxc container by libvirt, I logged into the lxc
> container and noticed that info under /proc/ dir did not match the
> lxc container resource.  Is the /proc dir in lxc container just
> showing the same thing as the lxc host? If I want to monitor the
> realtime resource usage inside the lxc container, What should I do?
At this time, the only files in /proc that are virtualized are
the /proc/$PID/* files for each process, and the /proc/meminfo
global file. All the other files reflect global host state.

Are there particular files in /proc/NNNN that you want to see
virtualized in the future ?

Daniel
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Hello.

Can someone shed some light on the copy-storage-all feature? There are
many hits on google. My current questions are.

1. is it possible to do a migrate --live --copy-storage-all .... without
shared storage?
2. Do i need to have a preexisting image on the destination node?
3. Is this still true:

The current implementation of --copy-storage-all uses a qemu interface
that upstream qemu developers are reluctant to support, and risks
running into problems.  We have patches under review to use a new NBD
server for migration when targeting qemu 1.4 with libvirt 1.0.2, with
much less risk

thanks and best regards
t.

On 2013-07-23 18:14, "Daniel P. Berrange" <berrange@redhat.com>
wrote:
>>On Tue, Jul 23, 2013 at 04:56:30PM +0800, hzguanqiang wrote:
>> Hi Guys,
>> When I created a lxc container by libvirt, I logged into the lxc
>> container and noticed that info under /proc/ dir did not match the
>> lxc container resource.  Is the /proc dir in lxc container just
>> showing the same thing as the lxc host? If I want to monitor the
>> realtime resource usage inside the lxc container, What should I do?
>At this time, the only files in /proc that are virtualized are
>the /proc/$PID/* files for each process, and the /proc/meminfo
>global file. All the other files reflect global host state.
>Are there particular files in /proc/NNNN that you want to see
>virtualized in the future ?
Well, I used to monitor a kvm vm by a script reading info from files such as
/proc/stat, /proc/loadavg, /proc/meminfo, /proc/diskstats, /proc/net/dev.
Through those files under /proc, I can get the whole statistic info of the vm
including cpu/memory/disk/net.

If I want to do the same work in lxc supported by libvirt, How can I make it? 
BTW, I know virt-top can do such things.  But what I want is a programming way
such as libvirt interface.

------------------     
Best regards!
GuanQiang
2013-07-24