Hi,
I was trying to replace a disk for an osd by following instruction at:
http://ceph.newdream.net/wiki/Replacing_a_failed_disk/OSD
Now, ceph -w getting
2011-07-08 15:52:39.702881 pg v1602: 602 pgs: 49 active+degraded,
553 active+clean+degraded; 349 MB data, 333 MB used, 566 MB / 1023 MB
avail; 167/224 degraded (74.554%); 55/112 unfound (49.107%)
and a copy operation hang on the ceph client forever. I cannot kill
(-9) the cp process. Is there any hope to recover my ceph filesystem?
My general question is: How are objects distributed among OSDs? Does
duplication (2x) guarantee that a failure of a single OSD would not lose
data? It appears to me that the objects are statistically redistributed
and does not guarantee physical separation of replication data location.
Thanks!
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