Hi, I stumbled upon this feature request from Dmitry, to make osd tree show primary-affinity value:
http://tracker.ceph.com/issues/10036 This looks useful in some cases and is simple to implement, so here is the patch: https://github.com/trociny/ceph/compare/feature-10036 But before sending a pull request, I'd like to hear other people opinion. I wonder if it would be useful for most of the users or they would rather consider this as a white noice in osd tree output? Note, currently primary-affinity can be obtain by other ways, e.g: ceph -f json-pretty osd dump Here is an example of osd tree output after the change: % ceph osd tree # id weight type name up/down reweight primary-affinity -1 3 root default -2 3 host zhuzha 0 1 osd.0 up 1 0.5 1 1 osd.1 up 1 0.75 2 1 osd.2 up 1 1 % ceph -f json-pretty osd tree { "nodes": [ { "id": -1, "name": "default", "type": "root", "type_id": 10, "children": [ -2]}, { "id": -2, "name": "zhuzha", "type": "host", "type_id": 1, "children": [ 2, 1, 0]}, { "id": 0, "name": "osd.0", "exists": 1, "type": "osd", "type_id": 0, "status": "up", "reweight": 1.000000, "primary_affinity": 0.500000, "crush_weight": 1.000000, "depth": 2}, { "id": 1, "name": "osd.1", "exists": 1, "type": "osd", "type_id": 0, "status": "up", "reweight": 1.000000, "primary_affinity": 0.750000, "crush_weight": 1.000000, "depth": 2}, { "id": 2, "name": "osd.2", "exists": 1, "type": "osd", "type_id": 0, "status": "up", "reweight": 1.000000, "primary_affinity": 1.000000, "crush_weight": 1.000000, "depth": 2}], "stray": []} -- Mykola Golub _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
