Hi Vadim,
The default distribution rule is now to split over hosts. If you only
have one host Ceph will not be able to replicate your data.
If you need to replicate within a single host you will have to update
your crush rules from "step chooseleaf firstn 0 type host" to "step
chooseleaf firstn 0 type osd" or similar depending on your crush setup.
Please see the documentation for more info
https://ceph.com/docs/master/rados/operations/crush-map/.
-Michael
On 29/04/2014 21:00, Vadim Kimlaychuk wrote:
Hello all,
I have tried to install subj. almost 10 times from the
beginning using official guides:
http://ceph.com/docs/master/start/
and older one
http://eu.ceph.com/docs/wip-6919/start/quick-start/
The result is always the same. At the end of installation
I got:
<root@storage>/root # ceph -s
cluster c887f570-bd8d-4aa3-bc63-b8ff959bd03f
health HEALTH_WARN 91 pgs degraded; 192 pgs stuck unclean
monmap e1: 1 mons at {storage=172.16.3.2:6789/0}, election epoch
2, quorum 0 storage
osdmap e16: 2 osds: 2 up, 2 in
pgmap v29: 192 pgs, 3 pools, 0 bytes data, 0 objects
69780 kB used, 1396 GB / 1396 GB avail
101 active+remapped
91 active+degraded
And
<root@storage>/root # ceph osd tree
# id weight type name up/down reweight
-1 2 root default
-2 2 host storage
0 1 osd.0 up 1
1 1 osd.1 up 1
Or similar in the number of “active + remapped” and
“active + degradated” number of PGs. Writing down the object using
rados didn’t change anything.
Never got any PG active+clean statuses as guide says. What
I am doing wrong? Are these guides outdated?
Host configuration is simple: single PC with 3 HDDs – one for OS +
journal, 2 for OSD-s.
BR,
Vadim Kimlaychuk
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