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
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