With pool size of 1 the scrub can still do some consistency checking. These are things like missing attributes, on-disk size doesn’t match attribute size, non-clone without a head, expected clone. You could check the osd logs to see what they were. The pg below only had 1 object in error and it was detected after 2013-12-13 15:38:13.283741 which was the last clean scrub. David Zafman Senior Developer http://www.inktank.com On Jan 9, 2014, at 6:36 PM, Mark Kirkwood <mark.kirkwood@xxxxxxxxxxxxxxx> wrote: > I've noticed this on 2 (development) clusters that I have with pools having size 1. I guess my first question would be - is this expected? > > Here's some detail from one of the clusters: > > $ ceph -v > ceph version 0.74-621-g6fac2ac (6fac2acc5e6f77651ffcd7dc7aa833713517d8a6) > > $ ceph osd dump > epoch 104 > fsid 4e8548e8-dfe4-46d0-a2e8-fb4a9beadff2 > created 2013-11-08 11:01:57.051773 > modified 2014-01-10 14:55:07.353514 > flags > > pool 0 'data' replicated size 1 min_size 1 crush_ruleset 0 object_hash rjenkins pg_num 64 pgp_num 64 last_change 47 owner 0 crash_replay_interval 45 > pool 1 'metadata' replicated size 1 min_size 1 crush_ruleset 1 object_hash rjenkins pg_num 64 pgp_num 64 last_change 49 owner 0 > pool 2 'rbd' replicated size 1 min_size 1 crush_ruleset 2 object_hash rjenkins pg_num 64 pgp_num 64 last_change 51 owner 0 > > max_osd 2 > osd.0 up in weight 1 up_from 102 up_thru 102 down_at 101 last_clean_interval [97,100) 192.168.2.63:6800/27931 192.168.2.63:6801/27931 192.168.2.63:6802/27931 192.168.2.63:6803/27931 exists,up 3c23570a-8a46-4ff2-9dab-cbbe82138bf7 > osd.1 up in weight 1 up_from 103 up_thru 103 down_at 100 last_clean_interval [98,99) 192.168.2.63:6805/28070 192.168.2.63:6806/28070 192.168.2.63:6807/28070 192.168.2.63:6808/28070 exists,up 73470b19-cd55-4881-a070-55efa06f3df3 > > $ ceph -s > cluster 4e8548e8-dfe4-46d0-a2e8-fb4a9beadff2 > health HEALTH_ERR 62 pgs inconsistent; 62 scrub errors; crush map has non-optimal tunables > monmap e1: 1 mons at {vedavec=192.168.2.63:6789/0}, election epoch 1, quorum 0 vedavec > osdmap e104: 2 osds: 2 up, 2 in > pgmap v4101: 192 pgs, 3 pools, 9691 MB data, 2439 objects > 9833 MB used, 179 GB / 198 GB avail > 130 active+clean > 62 active+clean+inconsistent > > > There are no dmesg errors, and performing a repair on each inconsistent pg removes the inconsistent state. I note with this cluster above that I have non optimal tunables, however (I think) I sorted that on the other one, which had no effect on the inconsistent pgs. > > Here's a query from one inconsistent pg: > > $ ceph pg 2.3f query > { "state": "active+clean+inconsistent", > "epoch": 104, > "up": [ > 0], > "acting": [ > 0], > "actingbackfill": [ > 0], > "info": { "pgid": "2.3f", > "last_update": "57'195468", > "last_complete": "57'195468", > "log_tail": "57'192467", > "last_user_version": 195468, > "last_backfill": "MAX", > "purged_snaps": "[]", > "history": { "epoch_created": 1, > "last_epoch_started": 103, > "last_epoch_clean": 103, > "last_epoch_split": 0, > "same_up_since": 102, > "same_interval_since": 102, > "same_primary_since": 102, > "last_scrub": "57'195468", > "last_scrub_stamp": "2014-01-10 14:59:23.195403", > "last_deep_scrub": "57'195468", > "last_deep_scrub_stamp": "2014-01-08 11:48:47.559227", > "last_clean_scrub_stamp": "2013-12-13 15:38:13.283741"}, > "stats": { "version": "57'195468", > "reported_seq": "531759", > "reported_epoch": "104", > "state": "active+clean+inconsistent", > "last_fresh": "2014-01-10 14:59:23.195452", > "last_change": "2014-01-10 14:59:23.195452", > "last_active": "2014-01-10 14:59:23.195452", > "last_clean": "2014-01-10 14:59:23.195452", > "last_became_active": "0.000000", > "last_unstale": "2014-01-10 14:59:23.195452", > "mapping_epoch": 101, > "log_start": "57'192467", > "ondisk_log_start": "57'192467", > "created": 1, > "last_epoch_clean": 103, > "parent": "0.0", > "parent_split_bits": 0, > "last_scrub": "57'195468", > "last_scrub_stamp": "2014-01-10 14:59:23.195403", > "last_deep_scrub": "57'195468", > "last_deep_scrub_stamp": "2014-01-08 11:48:47.559227", > "last_clean_scrub_stamp": "2013-12-13 15:38:13.283741", > "log_size": 3001, > "ondisk_log_size": 3001, > "stats_invalid": "0", > "stat_sum": { "num_bytes": 180355088, > "num_objects": 44, > "num_object_clones": 0, > "num_object_copies": 44, > "num_objects_missing_on_primary": 0, > "num_objects_degraded": 0, > "num_objects_unfound": 0, > "num_objects_dirty": 0, > "num_whiteouts": 0, > "num_read": 143836, > "num_read_kb": 3135807, > "num_write": 195467, > "num_write_kb": 2994821, > "num_scrub_errors": 1, > "num_shallow_scrub_errors": 1, > "num_deep_scrub_errors": 0, > "num_objects_recovered": 0, > "num_bytes_recovered": 0, > "num_keys_recovered": 0}, > "stat_cat_sum": {}, > "up": [ > 0], > "acting": [ > 0]}, > "empty": 0, > "dne": 0, > "incomplete": 0, > "last_epoch_started": 103, > "hit_set_history": { "current_last_update": "0'0", > "current_last_stamp": "0.000000", > "current_info": { "begin": "0.000000", > "end": "0.000000", > "version": "0'0"}, > "history": []}}, > "peer_info": [], > "recovery_state": [ > { "name": "Started\/Primary\/Active", > "enter_time": "2014-01-10 14:55:06.318015", > "might_have_unfound": [], > "recovery_progress": { "backfill_target": -1, > "waiting_on_backfill": 0, > "last_backfill_started": "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": [], > "recovering": [], > "pg_backend": { "pull_from_peer": [], > "pushing": []}}, > "scrub": { "scrubber.epoch_start": "102", > "scrubber.active": 0, > "scrubber.block_writes": 0, > "scrubber.finalizing": 0, > "scrubber.waiting_on": 0, > "scrubber.waiting_on_whom": []}}, > { "name": "Started", > "enter_time": "2014-01-10 14:55:05.255392"}]} > > > regards > > Mark > > _______________________________________________ > 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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