Open Stack

Thanks John,
After using a physical server(which supports virtualization) with
[libvirt]
virt_type=kvm

in nova.conf,nova instances are working as expected for SOS-CI.

But I remembered that one month ago performance of nova instances with qemu
was good.




Regards
Nikesh

On Sun, Mar 15, 2015 at 1:28 AM, John Griffith <john.griffith at solidfire.com>
wrote:

>
>
> On Sat, Mar 14, 2015 at 12:18 PM, Nikesh Kumar Mahalka <
> nikeshmahalka at vedams.com> wrote:
>
>> I am using below local.conf file
>> http://paste.openstack.org/show/192320/
>>
>> Actually i am deploying SOS-CI.
>> I am using ubuntu 14.04 VM having 150 GB sda and 24GB RAM and 8 core cpu.
>> Installing devstack is very fast on this VM and nova instances are
>> creating on getting desired gerrit cinder events,
>>
>> But nova instances performance is very slow,
>> I am using official trusty(ubuntu 14.04) image (
>> http://uec-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img
>> )
>> for nova instances.
>> I am using flavor-id 3 for nova instances.
>> Installing devstack in nova instance is taking 8-9 hrs.
>>
>> so wondering how to resolve this
>>
>>
>>
>> Regards
>> Nikesh
>>
>>
>> On Sat, Mar 14, 2015 at 8:10 PM, John Griffith <
>> john.griffith at solidfire.com> wrote:
>>
>>>
>>>
>>> On Sat, Mar 14, 2015 at 8:22 AM, Nikesh Kumar Mahalka <
>>> nikeshmahalka at vedams.com> wrote:
>>>
>>>> from where devstack instances consumes space for rootdisk,
>>>> if i have a ubuntu setup with sda 150gb.
>>>>
>>>> devstack is creating two volume groups on loop-back files of 10gb each
>>>> (stack-volumes-default and stack-volumes-lvmdriver-1).
>>>>
>>>> are they consume these volume groups for nova instances root-disk?
>>>>
>>>>
>>>> Regards
>>>> Nikesh
>>>>
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>>>>
>>>> Those loopbacks are specifically for Cinder (well, the
>>> stack-volume-default is actually for "nothing" right now but that's a whole
>>> separate debate I have had with some folks and have given up on).
>>>
>>> Ephemeral Nova instances by default in devstack are going to consume
>>> qcow files in /opt/stack/data/nova/instances (assuming you're still using
>>> the same local.conf I gave you a while back).
>>>
>>> Thanks,
>>> John
>>>
>>>
>> Hi Nikesh,
>
> I believe I already went through this with one of your coworkers via IRC a
> week or so ago.  Check and make sure you're not using QEMU and that you're
> using KVM for your virtualization.  This of course assumes you're on a
> modern processor that support nested virt.  To check this, just set:
> virt_type=kvm in your nova.conf.
>
> You may need to enable virt settings on your physical machines bios.
>
>
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