Setting a bucket’s OSD weights

Set all Ceph OSD weights under a bucket by running a single command.

Using the ceph osd crush reweight command can be time-consuming. You can set (or reset) all Ceph OSD weights under a bucket (row, rack, node, and so on) by running the ceph osd crush reweight-subtree command.

ceph osd crush reweight-subtree NAME

Where NAME is the name of the CRUSH bucket.