So,
I just checked the logs on one of our smaller cluster and it looks like
this error happened twice last week.
The cluster contains 12x8TB OSDs without any SSDs as cache. And it started
with octopus (so no upgrade from nautilus was performed)
root@3cecef08a104:~# zgrep -i marked /var/log/ceph/ceph*
/var/log/ceph/ceph.log.1.gz:2022-04-25T07:05:38.767452+0000
mon.3cecef5afb05 (mon.0) 390021 : cluster [INF] osd.6 marked itself dead as
of e4011
/var/log/ceph/ceph.log.1.gz:2022-04-25T07:05:38.764813+0000 osd.6 (osd.6)
3312 : cluster [WRN] Monitor daemon marked osd.6 down, but it is still
running
/var/log/ceph/ceph.log.1.gz:2022-04-25T07:05:38.764827+0000 osd.6 (osd.6)
3313 : cluster [DBG] map e4011 wrongly marked me down at e4010
/var/log/ceph/ceph.log.2.gz:2022-04-24T06:54:53.726084+0000 osd.6 (osd.6)
3227 : cluster [WRN] Monitor daemon marked osd.6 down, but it is still
running
/var/log/ceph/ceph.log.2.gz:2022-04-24T06:54:53.726098+0000 osd.6 (osd.6)
3228 : cluster [DBG] map e3995 wrongly marked me down at e3994
/var/log/ceph/ceph.log.2.gz:2022-04-24T06:54:53.729151+0000
mon.3cecef5afb05 (mon.0) 382918 : cluster [INF] osd.6 marked itself dead as
of e3995
Checking the log of said OSD shows that this happened after the
compactation began:
2022-04-24T06:54:24.341+0000 7f7c6e152700 4 rocksdb: EVENT_LOG_v1
{"time_micros": 1650783264345276, "job": 1609, "event":
"table_file_deletion", "file_number": 10916}
2022-04-24T06:54:24.341+0000 7f7c6e152700 4 rocksdb:
[db/compaction_job.cc:1642] [default] [JOB 1610] Compacting 1@1 + 4@2 files
to L2, score 1.76
2022-04-24T06:54:24.341+0000 7f7c6e152700 4 rocksdb:
[db/compaction_job.cc:1648] [default] Compaction start summary: Base
version 1609 Base level 1, inputs: [10975(43MB)], [10930(67MB) 10931(672KB)
10862(51MB) 10843(67MB)]
2022-04-24T06:54:24.341+0000 7f7c6e152700 4 rocksdb: EVENT_LOG_v1
{"time_micros": 1650783264345617, "job": 1610, "event":
"compaction_started", "compaction_reason": "LevelMaxLevelSize", "files_L1":
[10975], "files_L2": [10930, 10931, 10862, 10843], "score": 1.76282,
"input_data_size": 241028245}
2022-04-24T06:54:25.609+0000 7f7c6e152700 4 rocksdb:
[db/compaction_job.cc:1327] [default] [JOB 1610] Generated table #10986:
226423 keys, 70464004 bytes
2022-04-24T06:54:25.609+0000 7f7c6e152700 4 rocksdb: EVENT_LOG_v1
{"time_micros": 1650783265611705, "cf_name": "default", "job": 1610,
"event": "table_file_creation", "file_number": 10986, "file_size":
70464004, "table_properties": {"data_size": 67109810, "index_size":
2787246, "filter_size": 566085, "raw_key_size": 42830142,
"raw_average_key_size": 189, "raw_value_size": 55015026,
"raw_average_value_size": 242, "num_data_blocks": 16577, "num_entries":
226423, "filter_policy_name": "rocksdb.BuiltinBloomFilter"}}
2022-04-24T06:54:27.197+0000 7f7c6e152700 4 rocksdb:
[db/compaction_job.cc:1327] [default] [JOB 1610] Generated table #10987:
233189 keys, 70525661 bytes
2022-04-24T06:54:27.197+0000 7f7c6e152700 4 rocksdb: EVENT_LOG_v1
{"time_micros": 1650783267203149, "cf_name": "default", "job": 1610,
"event": "table_file_creation", "file_number": 10987, "file_size":
70525661, "table_properties": {"data_size": 67113431, "index_size":
2828386, "filter_size": 582981, "raw_key_size": 44106906,
"raw_average_key_size": 189, "raw_value_size": 54869394,
"raw_average_value_size": 235, "num_data_blocks": 16569, "num_entries":
233189, "filter_policy_name": "rocksdb.BuiltinBloomFilter"}}
2022-04-24T06:54:28.597+0000 7f7c6e152700 4 rocksdb:
[db/compaction_job.cc:1327] [default] [JOB 1610] Generated table #10988:
228113 keys, 70497098 bytes
2022-04-24T06:54:28.597+0000 7f7c6e152700 4 rocksdb: EVENT_LOG_v1
{"time_micros": 1650783268603183, "cf_name": "default", "job": 1610,
"event": "table_file_creation", "file_number": 10988, "file_size":
70497098, "table_properties": {"data_size": 67111373, "index_size":
2814553, "filter_size": 570309, "raw_key_size": 43137333,
"raw_average_key_size": 189, "raw_value_size": 54984875,
"raw_average_value_size": 241, "num_data_blocks": 16584, "num_entries":
228113, "filter_policy_name": "rocksdb.BuiltinBloomFilter"}}
2022-04-24T06:54:28.689+0000 7f7c76c00700 1 heartbeat_map is_healthy
'OSD::osd_op_tp thread 0x7f7c5d130700' had timed out after 15
2022-04-24T06:54:28.689+0000 7f7c75bfe700 1 heartbeat_map is_healthy
'OSD::osd_op_tp thread 0x7f7c5d130700' had timed out after 15
....
2022-04-24T06:54:53.521+0000 7f7c5d130700 1 heartbeat_map reset_timeout
'OSD::osd_op_tp thread 0x7f7c5d130700' had timed out after 15
2022-04-24T06:54:53.721+0000 7f7c66943700 0 log_channel(cluster) log [WRN]
: Monitor daemon marked osd.6 down, but it is still running
2022-04-24T06:54:53.721+0000 7f7c66943700 0 log_channel(cluster) log [DBG]
: map e3995 wrongly marked me down at e3994
The cluster itself still got plenty of free space and doesn't have a huge
IO load.
So what next? How can I give more debug output to solve this issue.
--
Die Selbsthilfegruppe "UTF-8-Probleme" trifft sich diesmal abweichend im
groüen Saal.
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