On 09/12/2013 11:33 AM, Darren Birkett wrote:
Hi Maciej,
That's interesting. The following also seems to suggest that nova has
those shared storage dependencies for live migration that I spoke about:
http://tracker.ceph.com/issues/5938
That's obsolete for Grizzly. True live migration works fine with an
rbd-backed instance. I haven't checked Havana yet, particularly with
libvirt_image_type using rbd. If anyone's interested in checking out
the new libvirt_image_type option, now is a good time to catch
any bugs before Havana is released.
Josh
Thanks
Darren
On 12 September 2013 17:01, Maciej Gałkiewicz <mac...@shellycloud.com
<mailto:mac...@shellycloud.com>> wrote:
On 12 September 2013 15:15, Darren Birkett <darren.birk...@gmail.com
<mailto:darren.birk...@gmail.com>> wrote:
> Hi Maciej,
>
> I'm using Grizzly, but the live migration doesn't appear to be
changed even
> in trunk. It seems to check if you are using shared storage by
writing a
> test file on the destination host (in /var/lib/nova/instances)
and then
> trying to read it on the source host, and will fail if this test
does not
> succeed. Given that we do not use a shared filesystem as such
when using
> RBD backed instances, I don't understand how this can succeed:
>
>
https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L3726-L3761
Apparently the code is not used in case of rbd. I didnt notice any
issues caused by this method.
> Seems like I might be missing something and am probably reading
the code
> wrong, as it sounds like you have it working. Are there any
particular
> settings you had to add to nova to make it work?
Nova does not require any changes. Only cinder.
regards
--
Maciej Gałkiewicz
Shelly Cloud Sp. z o. o., Sysadmin
http://shellycloud.com/, mac...@shellycloud.com
<mailto:mac...@shellycloud.com>
KRS: 0000440358 REGON: 101504426
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