On 23 Sep 2016 at 13:25:39, Davíð Örn Jóhannsson (davi...@siminn.is) wrote:
OpenStack Liberty
Ubuntu 14.04
I know that using block storage like Cinder you can evacuate instances from
hosts, but in my case we are not yet using Cinder or other block storage
solutions, we rely on local ephemeral storage, configured on using LVM
Nova.conf
[libvirt]
images_volume_group=vg_ephemeral
images_type=lvm
Is it possible to evacuate (migrate) ephemeral instances from compute hosts
and if so does any one have any experience with that?
Hi Davíð
Have you actually tried the regular "nova migrate UUID" option? It does
copy the entire disk to a different compute - but i'm not sure if it's
working with LVM. I've also used [1] ("nova live-migrate --block-migrate
UUID") in the past - but unfortunately this also wasn't LVM backed
ephemeral storage.
[1]
http://www.tcpcloud.eu/en/blog/2014/11/20/block-live-migration-openstack-environment/
BR
Marcin
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