If I remember/guess correctly, if you mark an OSD out it won't
necessarily change the weight of the bucket above it (ie, the host),
whereas if you change the weight of the OSD then the host bucket's
weight changes.
-Greg
That sounds right. Marking an OSD out is a ceph osd reweight, not a ceph osd crush reweight.
Experimentally confirmed. I have an OSD out right now, and the host's crush weight is the same as the other hosts' crush weight.
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