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Chris LuandGitHub
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* master: grow rack-spanning volumes once per DC, capped at copy_N The periodic rack-aware growth scan grew once per rack. For rack-spanning replication (DiffRackCount > 0) a single logical volume already covers every rack the placement needs, so a crowded volume made every rack report should-grow and the scan created racks×step too many volumes: with "010" across two racks that is 2 racks x step 2 = 4 logical (8 physical) volumes. Plan one DC-wide grow for rack-spanning replication, and cap the per-event step at master.volume_growth.copy_N so lowering it reduces periodic growth. * master: distribute lastGrowCount evenly across uneven DCs The non-rack-spanning grow divisor used the current DC's rack count, so DCs with different rack counts each over-grew. Sum every rack up front and divide lastGrowCount by that global count instead.