On 03/03/2016 06:12 PM, Philip Hempel wrote:
Philip,
I forgot to CC the list, now i did...
To export the data I used ceph-objectstore-tool to do this using the
export command.
I am trying to repair a cluster that has 74 pgs that are down, I have
seen that the pgs in question are presently with 0 data on the OSD.
Can you show the output of query of one pg? "ceph pg <pg_id> query"
I have exported data from OSD's that were pulled when the
client had thought the disk were bad.
How did you export the data ?
Okay, from the pg query output i get the following:
$ egrep 'peer_info|\"peer\"|\"num_bytes\"' ceph-query-3.50f
"num_bytes": 0,
"peer_info": [
"peer": "5",
"num_bytes": 0,
"peer": "9",
"num_bytes": 0,
"peer": "10",
"num_bytes": 0,
"peer": "17",
"num_bytes": 0,
"peer": "19",
"num_bytes": 0,
"peer": "23",
"num_bytes": 897560576,
"peer": "24",
"num_bytes": 0,
"peer": "39",
"num_bytes": 0,
"peer": "43",
"num_bytes": 0,
"peer": "44",
"num_bytes": 0,
"peer": "48",
"num_bytes": 0,
So osd.23 looks like the only that has data and the acting OSDs does not
have any. On which OSD did you import the data? Since osd.34 and osd.43
are acting for this PG, maybe you can try to import the data (also) on
those OSDs. Before importing, set the cluster to noout and stop the OSD
daemon where you will import the data. I think you als must remove the
present PG info on the disk, for example "rm
/var/lib/ceph/osd/ceph-34/current/3.50f_head", but check (and double
check) that you only remove that directory when it is empty....
--
Regards,
Richard.
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