Re: Best way to change bucket hierarchy

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> 
> Why don't you do the crush map change together with that? All the data will be reshuffled then any w

Couldn’t the upmap trick be used to manage this?  Compute a full set to pin the before mappings, then incrementally remove them so that data moves in a controlled fashion?  I ssupect that one would heed a bit of headroom on the OSDs to avoid fillage.


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