No I have not, I guess there is nothing else to do than just give it a go :)

Thanks for the pointer

From: Marcin Iwinski
Date: Friday 23 September 2016 at 11:39
To: David Orn Johannsson, 
"openstack-operators@lists.openstack.org<mailto:openstack-operators@lists.openstack.org>"
Subject: Re: [Openstack-operators] Evacuate host with host ephemeral storage



On 23 Sep 2016 at 13:25:39, Davíð Örn Jóhannsson 
(davi...@siminn.is<mailto: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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