Public bug reported:
Our ceph ring has some osds that are not balanced
We are using the 0.48.3-0ubuntu1~cloud0 version of ceph on precise
Full settings:
"full_ratio": "0.950000",
"near_full_ratio": "0.850000",
ceph osd tree
weight
12 1 osd.12 up 1
11 1 osd.11 up 1
13 1 osd.13 up 1
23 2 osd.23 up 1
27 2 osd.27 up 1
24 2 osd.24 up 1
25 2 osd.25 up 1
26 2 osd.26 up 1
48 2 osd.48 up 1
51 2 osd.51 up 1
55 2 osd.55 up 1
df of ceph-osd node:
/dev/sdc1 917G 716G 202G 79% /var/lib/ceph/osd/ceph-11
/dev/sdd1 917G 347G 571G 38% /var/lib/ceph/osd/ceph-12
/dev/sdb1 917G 791G 127G 87% /var/lib/ceph/osd/ceph-13
/dev/sdf1 1.8T 1.1T 729G 61% /var/lib/ceph/osd/ceph-23
/dev/sdh1 1.8T 1.1T 727G 61% /var/lib/ceph/osd/ceph-24
/dev/sde1 1.8T 1.2T 610G 67% /var/lib/ceph/osd/ceph-25
/dev/sdi1 1.8T 1.1T 731G 61% /var/lib/ceph/osd/ceph-26
/dev/sdg1 1.8T 1.1T 756G 59% /var/lib/ceph/osd/ceph-27
/dev/sdj1 1.9T 989G 874G 54% /var/lib/ceph/osd/ceph-48
/dev/sdk1 1.9T 1007G 856G 55% /var/lib/ceph/osd/ceph-51
/dev/sdl1 1.9T 960G 903G 52% /var/lib/ceph/osd/ceph-55
Notice ceph-13 is at 87% and ceph-11 is at 79% while ceph-12 which has
the same size and weight is only at 38%
What is causing this imbalance?
Manual re-balancing causes downtime in our environment, what can we do
to solve this?
** Affects: ceph (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1261501
Title:
ceph osds unbalanced
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