root@ceph3:/etc/ceph# ceph health detail
HEALTH_ERR 1 full osd(s)
osd.0 is full at 95%
root@ceph3:/etc/ceph# ceph osd tree

# id    weight  type name       up/down reweight
-1      6       root default
-8      2               host ceph1
1       1                       osd.1   up      1
1       1                       osd.1   up      1
0       -3.052e-05                      osd.0   up      1
-6      2               host ceph3
4       1                       osd.4   up      1
5       1                       osd.5   up      1
-7      2               host ceph2
2       1                       osd.2   up      1
3       1                       osd.3   up      1