Hi Watkins, You can use json-pretty format to show "ceph osd crush tree" result. According to your result on 13.2.4, it's not fixed yet. Re-format your result below. On 10:39 Thu 24 Jan, Noah Watkins wrote: > This seems to have been fixed in at least v13.2.4. I was able to > reproduce it in 13.2.0. > > [root@minikube /]# ceph osd crush tree --format=json > [{"id":-1,"name":"default","type":"root","type_id":10,"children":[-2]},{"id":-2,"name":"minikube","type":"host","type_id":1,"pool_weights":{},"children":[0]},{"id":0,"device_class":"hdd","name":"osd.0","type":"osd","type_id":0,"crush_weight":0.014999,"depth":2,"pool_weights":{}}][][root@minikube > /] [ {"id":-1,"name":"default","type":"root","type_id":10,"children":[-2]}, {"id":-2,"name":"minikube","type":"host","type_id":1,"pool_weights":{},"children":[0]}, {"id":0,"device_class":"hdd","name":"osd.0","type":"osd","type_id":0,"crush_weight":0.014999,"depth":2,"pool_weights":{}} ] [] ==> buggy null list in the end > > > > On Thu, Jan 24, 2019 at 5:16 AM Alfredo Deza <adeza@xxxxxxxxxx> wrote: > > > > On Thu, Jan 24, 2019 at 7:27 AM Liu, Changcheng > > <changcheng.liu@xxxxxxxxx> wrote: > > > > > > Hi Watkins, > > > controller-0:~$ ceph --version > > > ceph version 13.2.2 (02899bfda814146b021136e9d8e80eba494e1126) mimic (stable) > > > controller-0:~$ ceph osd crush tree --format=json-pretty > > > > > > [ > > > { > > > "id": -1, > > > "name": "storage-tier", > > > "type": "root", > > > "type_id": 10, > > > "children": [ > > > -3 > > > ] > > > }, > > > { > > > "id": -3, > > > "name": "group-0", > > > "type": "chassis", > > > "type_id": 2, > > > "pool_weights": {}, > > > "children": [ > > > -5, > > > -4 > > > ] > > > }, > > > { > > > "id": -4, > > > "name": "storage-0", > > > "type": "host", > > > "type_id": 1, > > > "pool_weights": {}, > > > "children": [] > > > }, > > > { > > > "id": -5, > > > "name": "storage-1", > > > "type": "host", > > > "type_id": 1, > > > "pool_weights": {}, > > > "children": [] > > > } > > > ] > > > [] > > > > > > B.R. > > > Changcheng > > > > > > On 16:27 Wed 23 Jan, Noah Watkins wrote: > > > > On Tue, Jan 22, 2019 at 8:54 PM Liu, Changcheng > > > > <changcheng.liu@xxxxxxxxx> wrote: > > > > > > > > > > 2) result: > > > > > [{"id":-1,"name":"default","type":"root","type_id":10,"children":[]}][] > > > > > > > > What version of Ceph are you using? Also.. is that the entire command > > > > output? For example, on the latest version I would expect there to be > > > > a "nodes" item: > > > > Seems like this has been the case for a while, I see it too on an > > older 13.2.0 version. > > > > > > > > > > { > > > > "nodes": [ > > > > { > > > > "id": -1, > > > > "name": "default", > > > > "type": "root", > > > > "type_id": 10, > > > > "children": [ > > > > -3 > > > > ] > > > > ... > > > > ], > > > > "stray": [] > > > > }