Hi Ignazio,

I am trying to evacuate the compute host on older version (mitaka).

Could please share the process you followed. I am not able to succeed with openstack live-migration fails with error message (this is known issue in older versions) and nova live-ligration - nothing happens even after initiating VM migration. It is almost 4 days.

~Jay.

On Thu, Jul 11, 2019 at 11:31 AM Ignazio Cassano <ignaziocassano@gmail.com> wrote:

I am sorry.

For simulating an host crash I used a wrong procedure.

Using  "echo 'c' > /proc/sysrq-trigger" all work fine

Il giorno gio 11 lug 2019 alle ore 11:01 Ignazio Cassano <ignaziocassano@gmail.com> ha scritto:

Hello All,

on ocata when I  poweroff a node with active instance , doing a nova host-evacuate works  fine

and instances are restartd on an active node.

On queens it does non evacuate instances but nova-api reports for each instance the following:

2019-07-11 10:19:54.745 13811 INFO nova.api.openstack.wsgi [req-daad0a7d-87ce-41bf-b096-a70fc306db5c 0c7a2d6006614fe2b3e81e47377dd2a9 c26f8d35f85547c4add392a221af1aab - default default] HTTP exception thrown: Cannot 'evacuate' instance e8485a5e-3623-4184-bcce-cafd56fa60b3 while it is in task_state powering-off

So it poweroff all instance on the failed node but does not start them on active nodes

What is changed ?

Ignazio

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