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Which still brings me back to the original point.

Is this a bug - and should it be reported as such?



On 11/05/16 18:51, Kashyap Chamarthy wrote:
> On Tue, May 03, 2016 at 02:27:00PM -0500, Sergio Cuellar Valdes wrote:
>
> [...]
>
>> I'm confused too about the use of KVM or QEMU In the computes the
>> file​/etc/nova/nova-compute.conf has:
>>
>> virt_type=kvm
>>
>> The output of:
>>
>> nova hypervisor-show <id> | grep hypervisor_type
>>
>> is:
>>
>> hypervisor_type           | QEMU
> As Dan noted in his response, it's because it is reporting the libvirt driver
> name (which is reported as QEMU).
>
> Refer below if you want to double-confirm if your instances are using KVM.
>
>> The virsh dumpxml of the instances shows:
>>
>> <domain type='kvm' id='44'>
> That means, yes, you using KVM.  You can confirm that by checking your QEMU
> command-line of the Nova instance, you'll see something like "accel=kvm":
>
> 	# This is on Fedora 23 system
> 	$ ps -ef | grep -i qemu-system-x86_64
> 	[...] /usr/bin/qemu-system-x86_64 -machine accel=kvm [...]
>
>> ....
>> <emulator>/usr/bin/qemu-system-x86_64</emulator>
>>
>> ​But according to ​this document [1], it is using QEMU emulator instead of
>> KVM, because it is not using /usr/bin/qemu-kvm
>>
>>
>> So I really don't know if it's using KVM or QEMU.
> As noted above, a sure-fire way to know is to see if the instance's QEMU
> command-line has "accel=kvm".
>
> A related useful tool is `virt-host-validate` (which is part of libvirt-client
> package, at least on Fedora-based systems):
>
>    $ virt-host-validate | egrep -i 'kvm'
>     QEMU: Checking if device /dev/kvm exists                                   : PASS
>     QEMU: Checking if device /dev/kvm is accessible                            : PASS
>
>
>> [1] https://libvirt.org/drvqemu.html
>>
>

-- 
Best Regards,
Maish Saidel-Keesing
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