[ceph-users] Re: removing/flattening a bucket without data movement?

On 8/31/19 4:14 PM, Zoltan Arnold Nagy wrote:

Could you elaborate a bit more? upmap is used to map specific PGs to specific OSDs in order to deal with CRUSH inefficiencies.

Why would I want to add a layer of indirection when the goal is to remove the bucket entirely?

As I understood you want to make huge CRUSH map changes without huge data movement. Upmap can help with this, you map your current PG's to OSD's that already holds this PG's. k