Hello Cephers!
When my cluster hit "full ratio" settings, objects from cache pull
didn't flush to a cold storage.
1. Hit the 'full ratio':
2016-03-06 11:35:23.838401 osd.64 10.22.11.21:6824/31423 4327 : cluster
[WRN] OSD near full (90%)
2016-03-06 11:35:55.447205 osd.64 10.22.11.21:6824/31423 4329 : cluster
[WRN] OSD near full (90%)
2016-03-06 11:36:29.255815 osd.64 10.22.11.21:6824/31423 4332 : cluster
[WRN] OSD near full (90%)
2016-03-06 11:37:04.769765 osd.64 10.22.11.21:6824/31423 4333 : cluster
[WRN] OSD near full (90%)
...
2. Well, ok. Set the option 'ceph osd pool set hotec
cache_target_full_ratio 0.8'.
But no one of objects didn't flush at all
3. Ok. Try flush all object manually:
[root@c1 ~]# rados -p hotec cache-flush-evict-all
rbd_data.34d1f5746d773.0000000000016ba9
4. After full day objects still in cache pool, didn't flush at all:
[root@c1 ~]# rados df
pool name KB objects clones degraded
unfound rd rd KB wr wr KB
data 0 0 0 0
0 6 4 158212 215700473
hotec 797656118 25030755 0 0
0 370599 163045649 69947951 17786794779
rbd 0 0 0 0
0 0 0 0 0
total used 2080570792 25030755
It a bug or predictable action?
--
Mike. runs!
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