Hi All...
Today we had a warning regarding 8 near full osd.
Looking to the osds occupation, 3 of them were above
90%. In order to solve the situation, I've decided to
reweigh those first using
ceph osd crush reweight osd.1 2.67719
ceph osd crush reweight osd.26 2.67719
ceph osd crush reweight osd.53 2.67719
Please note that I've started with a very
conservative step since the original weight for all
osds was 2.72710.
After some rebalancing (which has now stopped) I've
seen that the cluster is currently in the following
state
# ceph health detail
HEALTH_WARN 4 pgs backfill_toofull; 4 pgs stuck
unclean; recovery 20/39433323 objects degraded
(0.000%); recovery 77898/39433323 objects misplaced
(0.198%); 8 near full osd(s); crush map has legacy
tunables (require bobtail, min is firefly)
pg 6.e2 is stuck unclean for 9578.920997, current
state active+remapped+backfill_toofull, last acting
[49,38,11]
pg 6.4 is stuck unclean for 9562.054680, current state
active+remapped+backfill_toofull, last acting
[53,6,26]
pg 5.24 is stuck unclean for 10292.469037, current
state active+remapped+backfill_toofull, last acting
[32,13,51]
pg 5.306 is stuck unclean for 10292.448364, current
state active+remapped+backfill_toofull, last acting
[44,7,59]
pg 5.306 is active+remapped+backfill_toofull, acting
[44,7,59]
pg 5.24 is active+remapped+backfill_toofull, acting
[32,13,51]
pg 6.4 is active+remapped+backfill_toofull, acting
[53,6,26]
pg 6.e2 is active+remapped+backfill_toofull, acting
[49,38,11]
recovery 20/39433323 objects degraded (0.000%)
recovery 77898/39433323 objects misplaced (0.198%)
osd.1 is near full at 88%
osd.14 is near full at 87%
osd.24 is near full at 86%
osd.26 is near full at 87%
osd.37 is near full at 87%
osd.53 is near full at 88%
osd.56 is near full at 85%
osd.62 is near full at 87%
crush map has legacy tunables (require bobtail,
min is firefly); see
http://ceph.com/docs/master/rados/operations/crush-map/#tunables
Not sure if it is worthwhile to mention, but after
upgrading to Jewel, our cluster shows the warnings
regarding tunables. We still have not migrated to the
optimal tunables because the cluster will be very
actively used during the 3 next weeks ( due to one of
the main conference in our area) and we prefer to do
that migration after this peak period,
I am unsure what happen during the rebalacing but the
mapping of these 4 stuck pgs seems strange, namely the
up and acting osds are different.
# ceph pg dump_stuck unclean
ok
pg_stat state up up_primary acting
acting_primary
6.e2 active+remapped+backfill_toofull
[8,53,38] 8 [49,38,11] 49
6.4 active+remapped+backfill_toofull
[53,24,6] 53 [53,6,26] 53
5.24 active+remapped+backfill_toofull
[32,13,56] 32 [32,13,51] 32
5.306 active+remapped+backfill_toofull
[44,60,26] 44 [44,7,59] 44
# ceph pg map 6.e2
osdmap e1054 pg 6.e2 (6.e2) -> up [8,53,38] acting
[49,38,11]
# ceph pg map 6.4
osdmap e1054 pg 6.4 (6.4) -> up [53,24,6] acting
[53,6,26]
# ceph pg map 5.24
osdmap e1054 pg 5.24 (5.24) -> up [32,13,56] acting
[32,13,51]
# ceph pg map 5.306
osdmap e1054 pg 5.306 (5.306) -> up [44,60,26]
acting [44,7,59]
To complete this information, I am also sending the
output of pg query for one of these problematic pgs
(ceph pg 5.306 query) after this email.
What should be the procedure to try to recover those PGS
before continuing with the reweighing?
Than you in advance
Goncalo
# ceph pg 5.306 query
{
"state": "active+remapped+backfill_toofull",
"snap_trimq": "[]",
"epoch": 1054,
"up": [
44,
60,
26
],
"acting": [
44,
7,
59
],
"backfill_targets": [
"26",
"60"
],
"actingbackfill": [
"7",
"26",
"44",
"59",
"60"
],
"info": {
"pgid": "5.306",
"last_update": "1005'55174",
"last_complete": "1005'55174",
"log_tail": "1005'52106",
"last_user_version": 55174,
"last_backfill": "MAX",
"last_backfill_bitwise": 0,
"purged_snaps": "[]",
"history": {
"epoch_created": 339,
"last_epoch_started": 1016,
"last_epoch_clean": 996,
"last_epoch_split": 0,
"last_epoch_marked_full": 0,
"same_up_since": 1015,
"same_interval_since": 1015,
"same_primary_since": 928,
"last_scrub": "1005'55169",
"last_scrub_stamp": "2016-07-19
14:31:45.790871",
"last_deep_scrub": "1005'55169",
"last_deep_scrub_stamp": "2016-07-19
14:31:45.790871",
"last_clean_scrub_stamp": "2016-07-19
14:31:45.790871"
},
"stats": {
"version": "1005'55174",
"reported_seq": "39726",
"reported_epoch": "1049",
"state": "active+remapped+backfill_toofull",
"last_fresh": "2016-07-20 01:55:43.224525",
"last_change": "2016-07-20 00:47:02.045700",
"last_active": "2016-07-20 01:55:43.224525",
"last_peered": "2016-07-20 01:55:43.224525",
"last_clean": "2016-07-20 00:34:36.197721",
"last_became_active": "2016-07-20
00:36:21.224010",
"last_became_peered": "2016-07-20
00:36:21.224010",
"last_unstale": "2016-07-20
01:55:43.224525",
"last_undegraded": "2016-07-20
01:55:43.224525",
"last_fullsized": "2016-07-20
01:55:43.224525",
"mapping_epoch": 995,
"log_start": "1005'52106",
"ondisk_log_start": "1005'52106",
"created": 339,
"last_epoch_clean": 996,
"parent": "0.0",
"parent_split_bits": 0,
"last_scrub": "1005'55169",
"last_scrub_stamp": "2016-07-19
14:31:45.790871",
"last_deep_scrub": "1005'55169",
"last_deep_scrub_stamp": "2016-07-19
14:31:45.790871",
"last_clean_scrub_stamp": "2016-07-19
14:31:45.790871",
"log_size": 3068,
"ondisk_log_size": 3068,
"stats_invalid": false,
"dirty_stats_invalid": false,
"omap_stats_invalid": false,
"hitset_stats_invalid": false,
"hitset_bytes_stats_invalid": false,
"pin_stats_invalid": true,
"stat_sum": {
"num_bytes": 0,
"num_objects": 230,
"num_object_clones": 0,
"num_object_copies": 1150,
"num_objects_missing_on_primary": 0,
"num_objects_missing": 0,
"num_objects_degraded": 0,
"num_objects_misplaced": 920,
"num_objects_unfound": 0,
"num_objects_dirty": 230,
"num_whiteouts": 0,
"num_read": 12454,
"num_read_kb": 217518,
"num_write": 55524,
"num_write_kb": 228743,
"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,
"num_objects_omap": 230,
"num_objects_hit_set_archive": 0,
"num_bytes_hit_set_archive": 0,
"num_flush": 0,
"num_flush_kb": 0,
"num_evict": 0,
"num_evict_kb": 0,
"num_promote": 0,
"num_flush_mode_high": 0,
"num_flush_mode_low": 0,
"num_evict_mode_some": 0,
"num_evict_mode_full": 0,
"num_objects_pinned": 0
},
"up": [
44,
60,
26
],
"acting": [
44,
7,
59
],
"blocked_by": [],
"up_primary": 44,
"acting_primary": 44
},
"empty": 0,
"dne": 0,
"incomplete": 0,
"last_epoch_started": 1016,
"hit_set_history": {
"current_last_update": "0'0",
"history": []
}
},
"peer_info": [
{
"peer": "7",
"pgid": "5.306",
"last_update": "1005'55174",
"last_complete": "1005'55174",
"log_tail": "1005'52106",
"last_user_version": 55174,
"last_backfill": "MAX",
"last_backfill_bitwise": 0,
"purged_snaps": "[]",
"history": {
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"last_epoch_started": 1016,
"last_epoch_clean": 996,
"last_epoch_split": 0,
"last_epoch_marked_full": 0,
"same_up_since": 1015,
"same_interval_since": 1015,
"same_primary_since": 928,
"last_scrub": "1005'55169",
"last_scrub_stamp": "2016-07-19
14:31:45.790871",
"last_deep_scrub": "1005'55169",
"last_deep_scrub_stamp": "2016-07-19
14:31:45.790871",
"last_clean_scrub_stamp": "2016-07-19
14:31:45.790871"
},
"stats": {
"version": "1005'55173",
"reported_seq": "39711",
"reported_epoch": "1005",
"state": "active+clean",
"last_fresh": "2016-07-19
16:44:02.213143",
"last_change": "2016-07-19
14:31:45.791194",
"last_active": "2016-07-19
16:44:02.213143",
"last_peered": "2016-07-19
16:44:02.213143",
"last_clean": "2016-07-19
16:44:02.213143",
"last_became_active": "2016-06-27
04:57:38.897948",
"last_became_peered": "2016-06-27
04:57:38.897948",
"last_unstale": "2016-07-19
16:44:02.213143",
"last_undegraded": "2016-07-19
16:44:02.213143",
"last_fullsized": "2016-07-19
16:44:02.213143",
"mapping_epoch": 995,
"log_start": "1005'52106",
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"created": 339,
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"parent": "0.0",
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"last_scrub": "1005'55169",
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14:31:45.790871",
"last_deep_scrub": "1005'55169",
"last_deep_scrub_stamp": "2016-07-19
14:31:45.790871",
"last_clean_scrub_stamp": "2016-07-19
14:31:45.790871",
"log_size": 3067,
"ondisk_log_size": 3067,
"stats_invalid": false,
"dirty_stats_invalid": false,
"omap_stats_invalid": false,
"hitset_stats_invalid": false,
"hitset_bytes_stats_invalid": false,
"pin_stats_invalid": true,
"stat_sum": {
"num_bytes": 0,
"num_objects": 230,
"num_object_clones": 0,
"num_object_copies": 693,
"num_objects_missing_on_primary": 0,
"num_objects_missing": 0,
"num_objects_degraded": 0,
"num_objects_misplaced": 0,
"num_objects_unfound": 0,
"num_objects_dirty": 230,
"num_whiteouts": 0,
"num_read": 12454,
"num_read_kb": 217518,
"num_write": 55524,
"num_write_kb": 228743,
"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,
"num_objects_omap": 230,
"num_objects_hit_set_archive": 0,
"num_bytes_hit_set_archive": 0,
"num_flush": 0,
"num_flush_kb": 0,
"num_evict": 0,
"num_evict_kb": 0,
"num_promote": 0,
"num_flush_mode_high": 0,
"num_flush_mode_low": 0,
"num_evict_mode_some": 0,
"num_evict_mode_full": 0,
"num_objects_pinned": 0
},
"up": [
44,
60,
26
],
"acting": [
44,
7,
59
],
"blocked_by": [],
"up_primary": 44,
"acting_primary": 44
},
"empty": 0,
"dne": 0,
"incomplete": 0,
"last_epoch_started": 1016,
"hit_set_history": {
"current_last_update": "0'0",
"history": []
}
},
{
"peer": "26",
"pgid": "5.306",
"last_update": "1005'55174",
"last_complete": "1005'55174",
"log_tail": "1005'52174",
"last_user_version": 0,
"last_backfill": "MIN",
"last_backfill_bitwise": 1,
"purged_snaps": "[]",
"history": {
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14:31:45.790871",
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14:31:45.790871",
"last_clean_scrub_stamp": "2016-07-19
14:31:45.790871"
},
"stats": {
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"state": "inactive",
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},
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},
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},
{
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14:31:45.790871",
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14:31:45.790871",
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14:31:45.790871"
},
"stats": {
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16:44:02.213143",
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14:31:45.791194",
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16:44:02.213143",
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16:44:02.213143",
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04:57:38.897948",
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16:44:02.213143",
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16:44:02.213143",
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16:44:02.213143",
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14:31:45.790871",
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14:31:45.790871",
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14:31:45.790871",
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},
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],
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7,
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],
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},
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}
},
{
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14:31:45.790871",
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14:31:45.790871"
},
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"num_bytes_recovered": 0,
"num_keys_recovered": 0,
"num_objects_omap": 0,
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"num_bytes_hit_set_archive": 0,
"num_flush": 0,
"num_flush_kb": 0,
"num_evict": 0,
"num_evict_kb": 0,
"num_promote": 0,
"num_flush_mode_high": 0,
"num_flush_mode_low": 0,
"num_evict_mode_some": 0,
"num_evict_mode_full": 0,
"num_objects_pinned": 0
},
"up": [],
"acting": [],
"blocked_by": [],
"up_primary": -1,
"acting_primary": -1
},
"empty": 0,
"dne": 0,
"incomplete": 1,
"last_epoch_started": 1016,
"hit_set_history": {
"current_last_update": "0'0",
"history": []
}
}
],
"recovery_state": [
{
"name": "Started\/Primary\/Active",
"enter_time": "2016-07-20 00:36:21.091565",
"might_have_unfound": [],
"recovery_progress": {
"backfill_targets": [
"26",
"60"
],
"waiting_on_backfill": [],
"last_backfill_started": "MIN",
"backfill_info": {
"begin": "MIN",
"end": "MIN",
"objects": []
},
"peer_backfill_info": [],
"backfills_in_flight": [],
"recovering": [],
"pg_backend": {
"pull_from_peer": [],
"pushing": []
}
},
"scrub": {
"scrubber.epoch_start": "995",
"scrubber.active": 0,
"scrubber.state": "INACTIVE",
"scrubber.start": "MIN",
"scrubber.end": "MIN",
"scrubber.subset_last_update": "0'0",
"scrubber.deep": false,
"scrubber.seed": 0,
"scrubber.waiting_on": 0,
"scrubber.waiting_on_whom": []
}
},
{
"name": "Started",
"enter_time": "2016-07-20 00:36:19.742892"
}
],
"agent_state": {}
}
--
Goncalo Borges
Research Computing
ARC Centre of Excellence for Particle Physics at the Terascale
School of Physics A28 | University of Sydney, NSW 2006
T: +61 2 93511937
