Hi,
Testing Ceph with 0.79.
1 Monitor
2 OSDs
Following the instructions here
(http://ceph.com/docs/master/install/manual-deployment/)... I arrive at
this state:
------
cluster e3e1a87b-d282-41b5-b4ad-fb3f969e164f
health HEALTH_WARN 192 pgs degraded; 192 pgs stuck unclean
monmap e1: 1 mons at {a=10.208.39.100:6789/0}, election epoch 1,
quorum 0 a
osdmap e16: 2 osds: 2 up, 2 in
pgmap v21: 192 pgs, 3 pools, 0 bytes data, 0 objects
2004 MB used, 59381 MB / 65536 MB avail
192 active+degraded
------
'ceph osd dump' shows this:
------
...
pool 0 'data' replicated size 3 min_size 2 ...
pool 1 'metadata' replicated size 3 min_size 2 ...
pool 2 'rbd' replicated size 3 min_size 2 ...
...
------
It's not until I add a third OSD, or reduce the size of the pools, does
the 192 pgs become unstuck and migrate towards active+clean.
I think the documentation should indicate that three nodes are required
for Ceph to become optimal.
--
Thanks,
Dyweni
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