#ceph IRC Log

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IRC Log for 2012-08-25

Timestamps are in GMT/BST.

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[1:14] <dmick> wouldn't it be nice if there were a /tmp/cephtest/e that one could '.' that set PATH, LD_LIBRARY_PATH, CEPH_CONF...
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[6:13] <Tobarja> is it possible to move an osd from one physical box to another?
[6:14] <ajm> depends perhaps what you mean by "an osd"
[6:15] <ajm> you could obviously turn up an osd on the new box and adjust the crushmap to migrate data from old->new
[6:15] <Tobarja> i have a box i started with that has osd.1 and osd.0 on it. i now have another machine that i want to add to the mix, but i want to remove some of the load from the original box.
[6:16] <ajm> so do what I suggested, turn up a new OSD on the new box, adjust crushmap to migrate data, turn off old osd once * is migrated.
[6:16] <Tobarja> can you just mark the weight as 0 to remove it, or is there some other way to mark a machine as deprecated?
[6:16] <ajm> i used to just actually remove it
[6:17] <ajm> weight 0 would probably work too
[6:19] <Tobarja> if i later added a new machine again, could I reuse the old number or would it be an evergrowing list?
[6:20] <ajm> you could reuse it
[6:20] <Tobarja> ok, thx.... now let's see if i can break it!
[6:20] <ajm> make a backup :)
[6:21] <Tobarja> nothing exciting on the cluster yet... and isn't the whole point to not need a backup ;)
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[7:30] <renzhi> morning
[7:30] <renzhi> what is the quickest way to identify a down osd, if you have a lot of them?
[7:33] <renzhi> weird, one of the osd is down, and after 20 minutes, is back up :)
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[8:16] <Tobarja> hmm... seems like i broke it while i wasn't looking...
[8:37] <Tobarja> should ceph blacklist osd's all by itself?
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[12:34] <mrjack> hi
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[14:53] <mrjack> could someone tell me how to fix ceph, when ceph does not do anything anymore and is degraded?
[14:53] <mrjack> HEALTH_WARN 203 pgs degraded; 29 pgs peering; 28 pgs stuck inactive; 384 pgs
[14:53] <mrjack> stuck unclean; recovery 1882/7124 degraded (26.418%)
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[18:50] <gregphone> renzhi: "ceph osd dump | grep down" should do what you want
[18:52] <gregphone> Tobarja: if you mean the actual blacklist, that doesn't sound right -- should just be MDSes that get blacklisted right now
[18:52] <gregphone> but it'll mark them down and out on its own
[18:53] <gregphone> mrjack: what's the full output of ceph -s?
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[19:43] <mrjack_> hm
[19:44] <mrjack_> gregphone: ceph -s
[19:44] <mrjack_> health HEALTH_WARN 384 pgs degraded; 384 pgs stuck unclean; recovery 3562/7124 degraded (50.000%)
[19:44] <mrjack_> monmap e1: 3 mons at {0=188.65.145.10:6789/0,1=188.65.145.11:6789/0,2=91.204.168.11:6789/0}, election epoch 110, quorum 0,1,2 0,1,2
[19:44] <mrjack_> osdmap e151: 2 osds: 1 up, 1 in
[19:44] <mrjack_> pgmap v354634: 384 pgs: 384 active+degraded; 7322 MB data, 524 GB used, 206 GB / 770 GB avail; 3562/7124 degraded (50.000%)
[19:44] <mrjack_> mdsmap e194: 1/1/1 up {0=1=up:active}, 1 up:standby
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