ceph osd tree
# id    weight  type name       up/down reweight
-1      8.19    root default
-2      2.73            host pcn001-ham2
0       1.09                    osd.0   up      1
1       1.09                    osd.1   up      1
2       0.55                    osd.2   up      1
-3      2.73            host pcn002-ham2
3       1.09                    osd.3   up      1
4       1.09                    osd.4   up      1
5       0.55                    osd.5   up      1
-4      2.73            host pcn003-ham2
6       1.09                    osd.6   up      1
7       1.09                    osd.7   up      1
8       0.55                    osd.8   up      1