[openstack-dev] [nova][ironic] ironic_host_manager and baremetal scheduler options removal

Mathieu Gagné mgagne at calavera.ca
Wed May 2 17:48:06 UTC 2018

On Wed, May 2, 2018 at 1:39 PM, Matt Riedemann <mriedemos at gmail.com> wrote:
> I know you're just one case, but I don't know how many people are really
> running the CachingScheduler with ironic either, so it might be rare. It
> would be nice to get other operator input here, like I'm guessing CERN has
> their cells carved up so that certain cells are only serving baremetal
> requests while other cells are only VMs?

I found FilterScheduler to be near impossible to use with Ironic due
to the huge number of hypervisors it had to handle.
Using CachingScheduler made a huge difference, like day and night.

> FWIW, I think we can also backport the data migration CLI to stable branches
> once we have it available so you can do your migration in let's say Queens
> before getting to Rocky.


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