libvirt users - Sep 2013 - Re: Does libvirt support xapi/xe toolstack?

On Mon, Sep 30, 2013 at 10:49:10AM +0200, Guillaume Thouvenin
wrote:
> Guillaume Thouvenin <guillaume.thouvenin@polymtl.ca> a écrit :
> 
> >According to [1] it seems that libvirt is using Xend daemon to
communicate.
> 
> After reading more documentation it seems that Xend is mandatory. As
> everything is not up to date I'd like to know if it is still the
> case or if there are some possibilities to use XL instead of Xend?
If you have new enough libvirt and Xen >= 4.2 then libvirt will automatically
use the libxl APIs instead of XenD.


Daniel
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"Daniel P. Berrange" <berrange@redhat.com> a écrit :
> On Mon, Sep 30, 2013 at 10:49:10AM +0200, Guillaume Thouvenin wrote:
>> Guillaume Thouvenin <guillaume.thouvenin@polymtl.ca> a écrit :
>>
>> >According to [1] it seems that libvirt is using Xend daemon to
communicate.
>>
>> After reading more documentation it seems that Xend is mandatory. As
>> everything is not up to date I'd like to know if it is still the
>> case or if there are some possibilities to use XL instead of Xend?
>
> If you have new enough libvirt and Xen >= 4.2 then libvirt will
automatically
> use the libxl APIs instead of XenD.
>
Thanks for the confirmation. So my version of libvirt seems too old 
then (I'm using Xen 4.2.2) :

# libvirtd --version
libvirtd (libvirt) 0.10.2.6

I will try to install libvirt from the git repo.


Thanks for your help,
Regards.

Guillaume Thouvenin <guillaume.thouvenin@polymtl.ca> a écrit :
> "Daniel P. Berrange" <berrange@redhat.com> a écrit :
>> If you have new enough libvirt and Xen >= 4.2 then libvirt will 
>> automatically
>> use the libxl APIs instead of XenD.

I have compiled a version 1.1.2 (with xapi and xl support) and 
installed it in /usr/local. I started the daemon but I didn't see my 
vm1 listed even if everything seems fine in the log:

# /usr/local/sbin/libvirtd --daemon
# xl list
Name                                        ID   Mem VCPUs	State	Time(s)
Domain-0                                     0  2047    32     r-----   
   188.2
vm1                                          1  4096     1     -b----   
    13.5
# LD_LIBRARY_PATH=/usr/local/lib /usr/local/bin/virsh -c xen:/// list --all
Id    Name                           State
----------------------------------------------------

#

I see nothing in the libvirtd.log and I see this in libxl-driver.log:

# cat libxl/libxl-driver.log xc: debug: hypercall buffer: total 
allocations:21 total releases:21
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:16 misses:4 toobig:1
xc: debug: hypercall buffer: total allocations:21 total releases:21
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:16 misses:4 toobig:1
xc: debug: hypercall buffer: total allocations:18 total releases:18
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:13 misses:4 toobig:1
xc: debug: hypercall buffer: total allocations:18 total releases:18
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:13 misses:4 toobig:1
xc: debug: hypercall buffer: total allocations:18 total releases:18
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:13 misses:4 toobig:1


Any idea where I should looked to find why I don't see the vm1 with the 
virsh command?

Regards,
Guillaume