ubuntu@inst01:~$ sudo ceph -m 192.168.122.201 osd tree
sudo: unable to resolve host inst01
dumped osdmap tree epoch 1
# id	weight	type name	up/down	reweight
-1	0	pool default


### triggered hotplug
ubuntu@inst01:~$ sudo ceph -m 192.168.122.201 osd tree
sudo: unable to resolve host inst01
dumped osdmap tree epoch 3
# id	weight	type name	up/down	reweight
-1	0	pool default

0	0	osd.0	up	1


ubuntu@inst01:~$ sudo ceph --cluster=ceph --name=osd.0 --keyring=/var/lib/ceph/osd/ceph-0/keyring osd crush set 0 osd.0 1 pool=p datacenter=a room=b row=c rack=r host=inst01
sudo: unable to resolve host inst01
(22) Invalid argument
ubuntu@inst01:~$

ubuntu@inst01:~$ tail -3 /var/log/ceph/ceph-mon.inst01.log
2012-06-11 21:28:38.918458 7fdccb4c7700  0 mon.inst01@0(leader) e1 handle_command mon_command(osd crush set 0 osd.0 1 pool=p datacenter=a room=b row=c rack=r host=inst01 v 0) v1
2012-06-11 21:28:38.918491 7fdccb4c7700  0 mon.inst01@0(leader).osd e3 adding/updating crush item id 0 name 'osd.0' weight 1 at location {datacenter=a,host=inst01,pool=p,rack=r,room=b,row=c}
2012-06-11 21:28:38.918544 7fdccb4c7700  1 error: didn't find anywhere to add item 0 in {datacenter=a,host=inst01,pool=p,rack=r,room=b,row=c}
ubuntu@inst01:~$


ubuntu@inst01:~$ sudo ceph -m 192.168.122.201 osd tree
sudo: unable to resolve host inst01
dumped osdmap tree epoch 3
# id	weight	type name	up/down	reweight
-1	0	pool default

0	0	osd.0	up	1

ubuntu@inst01:~$



ubuntu@inst01:~$ sudo ceph --cluster=ceph --name=osd.0 --keyring=/var/lib/ceph/osd/ceph-0/keyring osd crush set 0 osd.0 1 pool=default rack=r host=inst01
sudo: unable to resolve host inst01
updated item id 0 name 'osd.0' weight 1 at location {host=inst01,pool=default,rack=r} to crush map
ubuntu@inst01:~$ sudo ceph -m 192.168.122.201 osd tree
sudo: unable to resolve host inst01
dumped osdmap tree epoch 5
# id	weight	type name	up/down	reweight
-1	1	pool default
-3	1		rack r
-2	1			host inst01
0	1				osd.0	up	1

ubuntu@inst01:~$


ubuntu@inst01:~$ sudo ceph --cluster=ceph --name=osd.0 --keyring=/var/lib/ceph/osd/ceph-0/keyring osd crush set 0 osd.0 1 pool=p datacenter=a room=b row=c rack=r host=inst01
sudo: unable to resolve host inst01
updated item id 0 name 'osd.0' weight 1 at location {datacenter=a,host=inst01,pool=p,rack=r,room=b,row=c} to crush map
ubuntu@inst01:~$

ubuntu@inst01:~$ sudo ceph -m 192.168.122.201 osd tree
sudo: unable to resolve host inst01
dumped osdmap tree epoch 5
# id	weight	type name	up/down	reweight
-1	1	pool default
-3	1		rack r
-2	1			host inst01
0	1				osd.0	up	1

ubuntu@inst01:~$