On 10/24/2018 6:55 PM, Sam Morrison wrote:
I’ve been thinking of some hybrid cellsv1/v2 thing where we’d still have the 
top level api cell DB but the API would only ever read from it. Nova-api would 
only write to the compute cell DBs.
Then keep the nova-cells processes just doing instance_update_at_top to keep 
the nova-cell-api db up to date.

There was also the "read from searchlight" idea [1] but that died in Boston.

[1] https://specs.openstack.org/openstack/nova-specs/specs/pike/approved/list-instances-using-searchlight.html




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