Thanks, reread that section in docs and found tunables profile - nice to have, hadn't noticed it before(ceph docs develop so fast that you need RSS to follow all changes :) ) Still problem persists in a different way. Did set profile "optimal", reballancing started, but I had "rbd delete" in background, in the end cluster ended up with negative degradation % I think I have hit bug http://tracker.ceph.com/issues/3720 which is still open. I did restart osds one by one and negative degradation dissapeared. Afterwards I added extra ~900GB data, degradation growed in process to 0.071% This is rather http://tracker.ceph.com/issues/3747 which is closed, but seems to happen still. I did "ceph osd out X; sleep 40; ceph osd in X" for all osds, degradation % went away. In the end I still have "55 active+remapped" pgs and no degradation %. "pgmap v1853405: 2662 pgs: 2607 active+clean, 55 active+remapped; 5361 GB data, 10743 GB used, 10852 GB / 21595 GB avail; 25230KB/s rd, 203op/s" I queried some of remapped pgs, do not see why they do not reballance(tunables are optimal now, checked). Where to look for the reason they are not reballancing? Is there something to look for in osd logs if debug level is increased? one of those: # ceph pg 4.5e query { "state": "active+remapped", "epoch": 9165, "up": [ 9], "acting": [ 9, 5], "info": { "pgid": "4.5e", "last_update": "8838'106544", "last_complete": "8838'106544", "log_tail": "6874'103543", "last_backfill": "MAX", "purged_snaps": "[1~3]", "history": { "epoch_created": 452, "last_epoch_started": 9159, "last_epoch_clean": 9160, "last_epoch_split": 0, "same_up_since": 9128, "same_interval_since": 9155, "same_primary_since": 8797, "last_scrub": "7696'104899", "last_scrub_stamp": "2013-11-14 11:45:43.492512", "last_deep_scrub": "6874'103975", "last_deep_scrub_stamp": "2013-11-10 05:16:26.380028", "last_clean_scrub_stamp": "2013-11-14 11:45:43.492512"}, "stats": { "version": "8838'106544", "reported_seq": "2172386", "reported_epoch": "9165", "state": "active+remapped", "last_fresh": "2013-11-21 17:39:51.055332", "last_change": "2013-11-21 16:04:04.786995", "last_active": "2013-11-21 17:39:51.055332", "last_clean": "2013-11-15 11:51:42.883916", "last_became_active": "0.000000", "last_unstale": "2013-11-21 17:39:51.055332", "mapping_epoch": 9128, "log_start": "6874'103543", "ondisk_log_start": "6874'103543", "created": 452, "last_epoch_clean": 9160, "parent": "0.0", "parent_split_bits": 0, "last_scrub": "7696'104899", "last_scrub_stamp": "2013-11-14 11:45:43.492512", "last_deep_scrub": "6874'103975", "last_deep_scrub_stamp": "2013-11-10 05:16:26.380028", "last_clean_scrub_stamp": "2013-11-14 11:45:43.492512", "log_size": 3001, "ondisk_log_size": 3001, "stats_invalid": "0", "stat_sum": { "num_bytes": 2814377984, "num_objects": 671, "num_object_clones": 0, "num_object_copies": 0, "num_objects_missing_on_primary": 0, "num_objects_degraded": 0, "num_objects_unfound": 0, "num_read": 264075, "num_read_kb": 1203000, "num_write": 8363, "num_write_kb": 3850240, "num_scrub_errors": 0, "num_shallow_scrub_errors": 0, "num_deep_scrub_errors": 0, "num_objects_recovered": 0, "num_bytes_recovered": 0, "num_keys_recovered": 0}, "stat_cat_sum": {}, "up": [ 9], "acting": [ 9, 5]}, "empty": 0, "dne": 0, "incomplete": 0, "last_epoch_started": 9159}, "recovery_state": [ { "name": "Started\/Primary\/Active", "enter_time": "2013-11-21 16:04:04.786697", "might_have_unfound": [], "recovery_progress": { "backfill_target": -1, "waiting_on_backfill": 0, "backfill_pos": "0\/\/0\/\/-1", "backfill_info": { "begin": "0\/\/0\/\/-1", "end": "0\/\/0\/\/-1", "objects": []}, "peer_backfill_info": { "begin": "0\/\/0\/\/-1", "end": "0\/\/0\/\/-1", "objects": []}, "backfills_in_flight": [], "pull_from_peer": [], "pushing": []}, "scrub": { "scrubber.epoch_start": "0", "scrubber.active": 0, "scrubber.block_writes": 0, "scrubber.finalizing": 0, "scrubber.waiting_on": 0, "scrubber.waiting_on_whom": []}}, { "name": "Started", "enter_time": "2013-11-21 16:03:59.430561"}]} Ugis 2013/11/14 Gregory Farnum <greg@xxxxxxxxxxx>: > Search the docs or mailing list archives for a discussion of the CRUSH > tunables; you can see that's the problem here because CRUSH is only > mapping the PG to one OSD instead of two. :) > -Greg > Software Engineer #42 @ http://inktank.com | http://ceph.com > > > On Thu, Nov 14, 2013 at 4:40 AM, Ugis <ugis22@xxxxxxxxx> wrote: >> Hi, >> >> Got 1 pg which does not fix and I dont know how to make it. >> >> ceph version 0.67.4 (ad85b8bfafea6232d64cb7ba76a8b6e8252fa0c7) >> # ceph health detail >> HEALTH_WARN 1 pgs stuck unclean; recovery 23/4687006 degraded >> (0.000%); 6 near full osd(s) >> pg 4.2ab is stuck unclean for 172566.764239, current state >> active+remapped, last acting [7,5] >> recovery 23/4687006 degraded (0.000%) >> osd.2 is near full at 87% >> osd.3 is near full at 88% >> osd.4 is near full at 85% >> osd.5 is near full at 86% >> osd.6 is near full at 87% >> osd.9 is near full at 85% >> >> # ceph osd dump >> ... >> pool 4 'temp1' rep size 2 min_size 1 crush_ruleset 3 object_hash >> rjenkins pg_num 1300 pgp_num 1300 last_change 7039 owner 0 >> removed_snaps [1~3] >> ... >> pg_temp 4.2ab [7,5] >> >> # ceph pg map 4.2ab >> osdmap e7783 pg 4.2ab (4.2ab) -> up [7] acting [7,5] >> >> # ceph pg 4.2ab query >> { "state": "active+remapped", >> "epoch": 7783, >> "up": [ >> 7], >> "acting": [ >> 7, >> 5], >> "info": { "pgid": "4.2ab", >> "last_update": "7752'114660", >> "last_complete": "7752'114660", >> "log_tail": "6874'111659", >> "last_backfill": "MAX", >> "purged_snaps": "[1~3]", >> "history": { "epoch_created": 452, >> "last_epoch_started": 7651, >> "last_epoch_clean": 7651, >> "last_epoch_split": 0, >> "same_up_since": 7493, >> "same_interval_since": 7650, >> "same_primary_since": 7650, >> "last_scrub": "7387'114067", >> "last_scrub_stamp": "2013-11-12 01:07:46.610491", >> "last_deep_scrub": "6874'103266", >> "last_deep_scrub_stamp": "2013-11-07 16:49:45.483581", >> "last_clean_scrub_stamp": "2013-11-12 01:07:46.610491"}, >> "stats": { "version": "7752'114660", >> "reported_seq": "5635118", >> "reported_epoch": "7783", >> "state": "active+remapped", >> "last_fresh": "2013-11-14 10:18:22.181241", >> "last_change": "2013-11-12 17:14:34.141441", >> "last_active": "2013-11-14 10:18:22.181241", >> "last_clean": "2013-11-12 14:01:01.947846", >> "last_became_active": "0.000000", >> "last_unstale": "2013-11-14 10:18:22.181241", >> "mapping_epoch": 7502, >> "log_start": "6874'111659", >> "ondisk_log_start": "6874'111659", >> "created": 452, >> "last_epoch_clean": 7651, >> "parent": "0.0", >> "parent_split_bits": 0, >> "last_scrub": "7387'114067", >> "last_scrub_stamp": "2013-11-12 01:07:46.610491", >> "last_deep_scrub": "6874'103266", >> "last_deep_scrub_stamp": "2013-11-07 16:49:45.483581", >> "last_clean_scrub_stamp": "2013-11-12 01:07:46.610491", >> "log_size": 3001, >> "ondisk_log_size": 3001, >> "stats_invalid": "0", >> "stat_sum": { "num_bytes": 9453961216, >> "num_objects": 2254, >> "num_object_clones": 0, >> "num_object_copies": 0, >> "num_objects_missing_on_primary": 0, >> "num_objects_degraded": 0, >> "num_objects_unfound": 0, >> "num_read": 456340, >> "num_read_kb": 1825360, >> "num_write": 14004, >> "num_write_kb": 6942720, >> "num_scrub_errors": 0, >> "num_shallow_scrub_errors": 0, >> "num_deep_scrub_errors": 0, >> "num_objects_recovered": 4732, >> "num_bytes_recovered": 19847446528, >> "num_keys_recovered": 0}, >> "stat_cat_sum": {}, >> "up": [ >> 7], >> "acting": [ >> 7, >> 5]}, >> "empty": 0, >> "dne": 0, >> "incomplete": 0, >> "last_epoch_started": 7651}, >> "recovery_state": [ >> { "name": "Started\/Primary\/Active", >> "enter_time": "2013-11-12 17:14:34.001382", >> "might_have_unfound": [], >> "recovery_progress": { "backfill_target": -1, >> "waiting_on_backfill": 0, >> "backfill_pos": "0\/\/0\/\/-1", >> "backfill_info": { "begin": "0\/\/0\/\/-1", >> "end": "0\/\/0\/\/-1", >> "objects": []}, >> "peer_backfill_info": { "begin": "0\/\/0\/\/-1", >> "end": "0\/\/0\/\/-1", >> "objects": []}, >> "backfills_in_flight": [], >> "pull_from_peer": [], >> "pushing": []}, >> "scrub": { "scrubber.epoch_start": "0", >> "scrubber.active": 0, >> "scrubber.block_writes": 0, >> "scrubber.finalizing": 0, >> "scrubber.waiting_on": 0, >> "scrubber.waiting_on_whom": []}}, >> { "name": "Started", >> "enter_time": "2013-11-12 17:14:32.905963"}]} >> >> >> I have set all my osds to osd_backfill_full_ratio 90, so they are not >> blocking backfill because of this. >> Seems that problem is in osd 5 or 7 which should hold the pg, but I >> cached no related logs even after "ms 1"(lots of output, may be wrong >> grepping). >> Tried to scrub/deep-scrub this pg, but there seems no action going on >> after I issue commands. >> >> This state came after I had "full osd" and cluster blocked io. Then I >> did some reweighting and cluster now sits at this state for a day >> already. >> >> Any ideas how to trigger fixing of this stuck active+remapped pg 4.2ab? >> >> Ugis >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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