Using oVirt VM pools in oVirt infra

[Anton Marchukov]

> I was under the impression you are thinking about a wrapper job you
> need to wrap around every job. This is a single, out of band, job. So
> it may not be that bad.
> You seem to imply that slaves managed by the Swarm plugin are not
> 'normal' ssh-based slaves, so there might be something there we can
> exploit (For example, perhaps the swarm client JAR can be made to exit
> once the slave is brought offline, so we can wrap it in a script that
> will shut the slave down when it does).
> I will look deeper into this in my POC.
>
>
Arent there any ability to hook into shutdown process and delay it from the
hook itself? There are vdsm hooks for that but I am not sure how pool
scheduler interacts with it. Maybe we can ask on user list. As I see the
ideal is to catch shutdown, than run some hook that will put skave to
maintanance, wait for job to finish and than unblocks shutdown.

I had the same problem when I was thinking on how to get back migration for
local disk slaves so auto balancing can be used for them. And the only
troublesome was to interact with user land to have an idea about if it is
safe. Sounds like feature request?

-- 
Anton Marchukov
Senior Software Engineer - RHEV CI - Red Hat
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