Re: PG scrub stamps reset to 0.000000 in 14.2.1

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On Wed, Jun 5, 2019 at 10:10 AM Jonas Jelten <jelten@xxxxxxxxx> wrote:
>
> Hi!
>
> I'm also affected by this:
>
> HEALTH_WARN 13 pgs not deep-scrubbed in time; 13 pgs not scrubbed in time
> PG_NOT_DEEP_SCRUBBED 13 pgs not deep-scrubbed in time
>     pg 6.b1 not deep-scrubbed since 0.000000
>     pg 7.ac not deep-scrubbed since 0.000000
>     pg 7.a0 not deep-scrubbed since 0.000000
>     pg 6.96 not deep-scrubbed since 0.000000
>     pg 7.92 not deep-scrubbed since 0.000000
>     pg 6.86 not deep-scrubbed since 0.000000
>     pg 7.74 not deep-scrubbed since 0.000000
>     pg 7.75 not deep-scrubbed since 0.000000
>     pg 7.49 not deep-scrubbed since 0.000000
>     pg 7.47 not deep-scrubbed since 0.000000
>     pg 6.2a not deep-scrubbed since 0.000000
>     pg 6.26 not deep-scrubbed since 0.000000
>     pg 6.b not deep-scrubbed since 0.000000
> PG_NOT_SCRUBBED 13 pgs not scrubbed in time
>     pg 6.b1 not scrubbed since 0.000000
>     pg 7.ac not scrubbed since 0.000000
>     pg 7.a0 not scrubbed since 0.000000
>     pg 6.96 not scrubbed since 0.000000
>     pg 7.92 not scrubbed since 0.000000
>     pg 6.86 not scrubbed since 0.000000
>     pg 7.74 not scrubbed since 0.000000
>     pg 7.75 not scrubbed since 0.000000
>     pg 7.49 not scrubbed since 0.000000
>     pg 7.47 not scrubbed since 0.000000
>     pg 6.2a not scrubbed since 0.000000
>     pg 6.26 not scrubbed since 0.000000
>     pg 6.b not scrubbed since 0.000000
>
>
> A week ago this status was:
>
>
> HEALTH_WARN 6 pgs not deep-scrubbed in time; 6 pgs not scrubbed in time
> PG_NOT_DEEP_SCRUBBED 6 pgs not deep-scrubbed in time
>     pg 7.b1 not deep-scrubbed since 0.000000
>     pg 7.7e not deep-scrubbed since 0.000000
>     pg 6.6e not deep-scrubbed since 0.000000
>     pg 7.8 not deep-scrubbed since 0.000000
>     pg 7.40 not deep-scrubbed since 0.000000
>     pg 6.f5 not deep-scrubbed since 0.000000
> PG_NOT_SCRUBBED 6 pgs not scrubbed in time
>     pg 7.b1 not scrubbed since 0.000000
>     pg 7.7e not scrubbed since 0.000000
>     pg 6.6e not scrubbed since 0.000000
>     pg 7.8 not scrubbed since 0.000000
>     pg 7.40 not scrubbed since 0.000000
>     pg 6.f5 not scrubbed since 0.000000
>
>
> Is this a known problem already? I can't find a bug report.

https://tracker.ceph.com/issues/40073

Fix is in progress!

>
>
> Cheers
>
> -- Jonas
>
>
>
> On 16/05/2019 01.13, Brett Chancellor wrote:
> > After upgrading from 14.2.0 to 14.2.1, I've noticed PGs are frequently resetting their scrub and deep scrub time stamps
> > to 0.000000.  It's extra strange because the peers show timestamps for deep scrubs.
> >
> > ## First entry from a pg list at 7pm
> > $ grep 11.2f2 ~/pgs-active.7pm
> > 11.2f2     691        0         0       0 2897477632           0          0 2091 active+clean    3h  7378'12291
> >  8048:36261    [1,6,37]p1    [1,6,37]p1 2019-05-14 21:01:29.172460 2019-05-14 21:01:29.172460
> >
> > ## Next Entry 3 minutes later
> > $ ceph pg ls active |grep 11.2f2
> > 11.2f2     695        0         0       0 2914713600           0          0 2091 active+clean    6s  7378'12291
> >  8049:36330    [1,6,37]p1    [1,6,37]p1                   0.000000                   0.000000
> >
> > ## PG Query
> > {
> >     "state": "active+clean",
> >     "snap_trimq": "[]",
> >     "snap_trimq_len": 0,
> >     "epoch": 8049,
> >     "up": [
> >         1,
> >         6,
> >         37
> >     ],
> >     "acting": [
> >         1,
> >         6,
> >         37
> >     ],
> >     "acting_recovery_backfill": [
> >         "1",
> >         "6",
> >         "37"
> >     ],
> >     "info": {
> >         "pgid": "11.2f2",
> >         "last_update": "7378'12291",
> >         "last_complete": "7378'12291",
> >         "log_tail": "1087'10200",
> >         "last_user_version": 12291,
> >         "last_backfill": "MAX",
> >         "last_backfill_bitwise": 1,
> >         "purged_snaps": [],
> >         "history": {
> >             "epoch_created": 1549,
> >             "epoch_pool_created": 216,
> >             "last_epoch_started": 6148,
> >             "last_interval_started": 6147,
> >             "last_epoch_clean": 6148,
> >             "last_interval_clean": 6147,
> >             "last_epoch_split": 6147,
> >             "last_epoch_marked_full": 0,
> >             "same_up_since": 6126,
> >             "same_interval_since": 6147,
> >             "same_primary_since": 6126,
> >             "last_scrub": "7378'12291",
> >             "last_scrub_stamp": "0.000000",
> >             "last_deep_scrub": "6103'12186",
> >             "last_deep_scrub_stamp": "0.000000",
> >             "last_clean_scrub_stamp": "2019-05-15 23:08:17.014575"
> >         },
> >         "stats": {
> >             "version": "7378'12291",
> >             "reported_seq": "36700",
> >             "reported_epoch": "8049",
> >             "state": "active+clean",
> >             "last_fresh": "2019-05-15 23:08:17.014609",
> >             "last_change": "2019-05-15 23:08:17.014609",
> >             "last_active": "2019-05-15 23:08:17.014609",
> >             "last_peered": "2019-05-15 23:08:17.014609",
> >             "last_clean": "2019-05-15 23:08:17.014609",
> >             "last_became_active": "2019-05-15 19:25:01.484322",
> >             "last_became_peered": "2019-05-15 19:25:01.484322",
> >             "last_unstale": "2019-05-15 23:08:17.014609",
> >             "last_undegraded": "2019-05-15 23:08:17.014609",
> >             "last_fullsized": "2019-05-15 23:08:17.014609",
> >             "mapping_epoch": 6126,
> >             "log_start": "1087'10200",
> >             "ondisk_log_start": "1087'10200",
> >             "created": 1549,
> >             "last_epoch_clean": 6148,
> >             "parent": "0.0",
> >             "parent_split_bits": 10,
> >             "last_scrub": "7378'12291",
> >             "last_scrub_stamp": "0.000000",
> >             "last_deep_scrub": "6103'12186",
> >             "last_deep_scrub_stamp": "0.000000",
> >             "last_clean_scrub_stamp": "2019-05-15 23:08:17.014575",
> >             "log_size": 2091,
> >             "ondisk_log_size": 2091,
> >             "stats_invalid": false,
> >             "dirty_stats_invalid": false,
> >             "omap_stats_invalid": false,
> >             "hitset_stats_invalid": false,
> >             "hitset_bytes_stats_invalid": false,
> >             "pin_stats_invalid": false,
> >             "manifest_stats_invalid": true,
> >             "snaptrimq_len": 0,
> >             "stat_sum": {
> >                 "num_bytes": 2914713600,
> >                 "num_objects": 695,
> >                 "num_object_clones": 0,
> >                 "num_object_copies": 2085,
> >                 "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": 695,
> >                 "num_whiteouts": 0,
> >                 "num_read": 0,
> >                 "num_read_kb": 0,
> >                 "num_write": 0,
> >                 "num_write_kb": 0,
> >                 "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": 0,
> >                 "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,
> >                 "num_legacy_snapsets": 0,
> >                 "num_large_omap_objects": 0,
> >                 "num_objects_manifest": 0,
> >                 "num_omap_bytes": 0,
> >                 "num_omap_keys": 0,
> >                 "num_objects_repaired": 0
> >             },
> >             "up": [
> >                 1,
> >                 6,
> >                 37
> >             ],
> >             "acting": [
> >                 1,
> >                 6,
> >                 37
> >             ],
> >             "blocked_by": [],
> >             "up_primary": 1,
> >             "acting_primary": 1,
> >             "purged_snaps": []
> >         },
> >         "empty": 0,
> >         "dne": 0,
> >         "incomplete": 0,
> >         "last_epoch_started": 6148,
> >         "hit_set_history": {
> >             "current_last_update": "0'0",
> >             "history": []
> >         }
> >     },
> >     "peer_info": [
> >         {
> >             "peer": "6",
> >             "pgid": "11.2f2",
> >             "last_update": "7378'12291",
> >             "last_complete": "7378'12291",
> >             "log_tail": "1087'10200",
> >             "last_user_version": 12264,
> >             "last_backfill": "MAX",
> >             "last_backfill_bitwise": 1,
> >             "purged_snaps": [],
> >             "history": {
> >                 "epoch_created": 1549,
> >                 "epoch_pool_created": 216,
> >                 "last_epoch_started": 6148,
> >                 "last_interval_started": 6147,
> >                 "last_epoch_clean": 6148,
> >                 "last_interval_clean": 6147,
> >                 "last_epoch_split": 6147,
> >                 "last_epoch_marked_full": 0,
> >                 "same_up_since": 6126,
> >                 "same_interval_since": 6147,
> >                 "same_primary_since": 6126,
> >                 "last_scrub": "7378'12291",
> >                 "last_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "last_deep_scrub": "6103'12186",
> >                 "last_deep_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "last_clean_scrub_stamp": "2019-05-15 23:08:17.014575"
> >             },
> >             "stats": {
> >                 "version": "6103'12264",
> >                 "reported_seq": "34823",
> >                 "reported_epoch": "6125",
> >                 "state": "active+undersized+degraded",
> >                 "last_fresh": "2019-05-15 19:16:05.309556",
> >                 "last_change": "2019-05-15 19:15:59.342872",
> >                 "last_active": "2019-05-15 19:16:05.309556",
> >                 "last_peered": "2019-05-15 19:16:05.309556",
> >                 "last_clean": "2019-05-15 17:23:41.956141",
> >                 "last_became_active": "2019-05-15 19:15:59.342872",
> >                 "last_became_peered": "2019-05-15 19:15:59.342872",
> >                 "last_unstale": "2019-05-15 19:16:05.309556",
> >                 "last_undegraded": "2019-05-15 19:15:59.341684",
> >                 "last_fullsized": "2019-05-15 19:15:59.340270",
> >                 "mapping_epoch": 6126,
> >                 "log_start": "1087'10200",
> >                 "ondisk_log_start": "1087'10200",
> >                 "created": 1549,
> >                 "last_epoch_clean": 6115,
> >                 "parent": "0.0",
> >                 "parent_split_bits": 10,
> >                 "last_scrub": "6103'12186",
> >                 "last_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "last_deep_scrub": "6103'12186",
> >                 "last_deep_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "last_clean_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "log_size": 2064,
> >                 "ondisk_log_size": 2064,
> >                 "stats_invalid": true,
> >                 "dirty_stats_invalid": false,
> >                 "omap_stats_invalid": false,
> >                 "hitset_stats_invalid": false,
> >                 "hitset_bytes_stats_invalid": false,
> >                 "pin_stats_invalid": false,
> >                 "manifest_stats_invalid": true,
> >                 "snaptrimq_len": 0,
> >                 "stat_sum": {
> >                     "num_bytes": 2784231424,
> >                     "num_objects": 664,
> >                     "num_object_clones": 0,
> >                     "num_object_copies": 1992,
> >                     "num_objects_missing_on_primary": 0,
> >                     "num_objects_missing": 0,
> >                     "num_objects_degraded": 664,
> >                     "num_objects_misplaced": 0,
> >                     "num_objects_unfound": 0,
> >                     "num_objects_dirty": 664,
> >                     "num_whiteouts": 0,
> >                     "num_read": 93,
> >                     "num_read_kb": 350209,
> >                     "num_write": 153,
> >                     "num_write_kb": 604160,
> >                     "num_scrub_errors": 0,
> >                     "num_shallow_scrub_errors": 0,
> >                     "num_deep_scrub_errors": 0,
> >                     "num_objects_recovered": 129,
> >                     "num_bytes_recovered": 540901376,
> >                     "num_keys_recovered": 0,
> >                     "num_objects_omap": 0,
> >                     "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,
> >                     "num_legacy_snapsets": 0,
> >                     "num_large_omap_objects": 0,
> >                     "num_objects_manifest": 0,
> >                     "num_omap_bytes": 0,
> >                     "num_omap_keys": 0,
> >                     "num_objects_repaired": 0
> >                 },
> >                 "up": [
> >                     1,
> >                     6,
> >                     37
> >                 ],
> >                 "acting": [
> >                     1,
> >                     6,
> >                     37
> >                 ],
> >                 "blocked_by": [],
> >                 "up_primary": 1,
> >                 "acting_primary": 1,
> >                 "purged_snaps": []
> >             },
> >             "empty": 0,
> >             "dne": 0,
> >             "incomplete": 0,
> >             "last_epoch_started": 6148,
> >             "hit_set_history": {
> >                 "current_last_update": "0'0",
> >                 "history": []
> >             }
> >         },
> >         {
> >             "peer": "37",
> >             "pgid": "11.2f2",
> >             "last_update": "7378'12291",
> >             "last_complete": "7378'12291",
> >             "log_tail": "1087'10200",
> >             "last_user_version": 12264,
> >             "last_backfill": "MAX",
> >             "last_backfill_bitwise": 1,
> >             "purged_snaps": [],
> >             "history": {
> >                 "epoch_created": 1549,
> >                 "epoch_pool_created": 216,
> >                 "last_epoch_started": 6148,
> >                 "last_interval_started": 6147,
> >                 "last_epoch_clean": 6148,
> >                 "last_interval_clean": 6147,
> >                 "last_epoch_split": 6147,
> >                 "last_epoch_marked_full": 0,
> >                 "same_up_since": 6126,
> >                 "same_interval_since": 6147,
> >                 "same_primary_since": 6126,
> >                 "last_scrub": "7378'12291",
> >                 "last_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "last_deep_scrub": "6103'12186",
> >                 "last_deep_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "last_clean_scrub_stamp": "2019-05-15 23:08:17.014575"
> >             },
> >             "stats": {
> >                 "version": "6103'12263",
> >                 "reported_seq": "34275",
> >                 "reported_epoch": "6103",
> >                 "state": "active+clean",
> >                 "last_fresh": "2019-05-15 17:23:41.956141",
> >                 "last_change": "2019-05-14 21:01:29.172506",
> >                 "last_active": "2019-05-15 17:23:41.956141",
> >                 "last_peered": "2019-05-15 17:23:41.956141",
> >                 "last_clean": "2019-05-15 17:23:41.956141",
> >                 "last_became_active": "2019-05-14 20:16:44.641437",
> >                 "last_became_peered": "2019-05-14 20:16:44.641437",
> >                 "last_unstale": "2019-05-15 17:23:41.956141",
> >                 "last_undegraded": "2019-05-15 17:23:41.956141",
> >                 "last_fullsized": "2019-05-15 17:23:41.956141",
> >                 "mapping_epoch": 6126,
> >                 "log_start": "1087'10200",
> >                 "ondisk_log_start": "1087'10200",
> >                 "created": 1549,
> >                 "last_epoch_clean": 6010,
> >                 "parent": "0.0",
> >                 "parent_split_bits": 10,
> >                 "last_scrub": "6103'12186",
> >                 "last_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "last_deep_scrub": "6103'12186",
> >                 "last_deep_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "last_clean_scrub_stamp": "2019-05-14 21:01:29.172460",
> >                 "log_size": 2063,
> >                 "ondisk_log_size": 2063,
> >                 "stats_invalid": true,
> >                 "dirty_stats_invalid": false,
> >                 "omap_stats_invalid": false,
> >                 "hitset_stats_invalid": false,
> >                 "hitset_bytes_stats_invalid": false,
> >                 "pin_stats_invalid": false,
> >                 "manifest_stats_invalid": true,
> >                 "snaptrimq_len": 0,
> >                 "stat_sum": {
> >                     "num_bytes": 2784231424,
> >                     "num_objects": 664,
> >                     "num_object_clones": 0,
> >                     "num_object_copies": 1993,
> >                     "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": 664,
> >                     "num_whiteouts": 0,
> >                     "num_read": 93,
> >                     "num_read_kb": 350209,
> >                     "num_write": 153,
> >                     "num_write_kb": 604160,
> >                     "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": 0,
> >                     "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,
> >                     "num_legacy_snapsets": 0,
> >                     "num_large_omap_objects": 0,
> >                     "num_objects_manifest": 0,
> >                     "num_omap_bytes": 0,
> >                     "num_omap_keys": 0,
> >                     "num_objects_repaired": 0
> >                 },
> >                 "up": [
> >                     1,
> >                     6,
> >                     37
> >                 ],
> >                 "acting": [
> >                     1,
> >                     6,
> >                     37
> >                 ],
> >                 "blocked_by": [],
> >                 "up_primary": 1,
> >                 "acting_primary": 1,
> >                 "purged_snaps": []
> >             },
> >             "empty": 0,
> >             "dne": 0,
> >             "incomplete": 0,
> >             "last_epoch_started": 6148,
> >             "hit_set_history": {
> >                 "current_last_update": "0'0",
> >                 "history": []
> >             }
> >         }
> >     ],
> >     "recovery_state": [
> >         {
> >             "name": "Started/Primary/Active",
> >             "enter_time": "2019-05-15 19:25:01.479877",
> >             "might_have_unfound": [],
> >             "recovery_progress": {
> >                 "backfill_targets": [],
> >                 "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": "6147",
> >                 "scrubber.active": false,
> >                 "scrubber.state": "INACTIVE",
> >                 "scrubber.start": "MIN",
> >                 "scrubber.end": "MIN",
> >                 "scrubber.max_end": "MIN",
> >                 "scrubber.subset_last_update": "0'0",
> >                 "scrubber.deep": false,
> >                 "scrubber.waiting_on_whom": []
> >             }
> >         },
> >         {
> >             "name": "Started",
> >             "enter_time": "2019-05-15 19:25:00.557042"
> >         }
> >     ],
> >     "agent_state": {}
> > }
> >
> > _______________________________________________
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> >
>
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