hi,
I use CephFS in production environnement with 7osd,1mds,3mon now.
So far so good,but i have a problem with it today.
The ceph status report this:
cluster ad3421a43-9fd4-4b7a-92ba-09asde3b1a228
health HEALTH_WARN
mds0: Client 34271 failing to respond to cache pressure
mds0: Client 74175 failing to respond to cache pressure
mds0: Client 74181 failing to respond to cache pressure
mds0: Client 34247 failing to respond to cache pressure
mds0: Client 64162 failing to respond to cache pressure
mds0: Client 136744 failing to respond to cache pressure
monmap e2: 3 mons at {node01=10.3.1.2:6789/0,node02=10.3.1.3:6789/0,node03=10.3.1.4:6789/0}
election epoch 186, quorum 0,1,2 node01,node02,node03
mdsmap e46: 1/1/1 up {0=tree01=up:active}
osdmap e717: 7 osds: 7 up, 7 in
pgmap v995836: 264 pgs, 3 pools, 51544 MB data, 118 kobjects
138 GB used, 1364 GB / 1502 GB avail
264 active+clean
client io 1018 B/s rd, 1273 B/s wr, 0 op/s
I add two osds with the version 0.94.2 and other old osds is 0.94.1 yesterday.So the question is does this matter?
What's the warning mean ,and how can i solve this problem.Thanks!This is my cluster config message with mds: "name": "mds.tree01",
"debug_mds": "1\/5",
"debug_mds_balancer": "1\/5",
"debug_mds_locker": "1\/5",
"debug_mds_log": "1\/5",
"debug_mds_log_expire": "1\/5",
"debug_mds_migrator": "1\/5",
"admin_socket": "\/var\/run\/ceph\/ceph-mds.tree01.asok",
"log_file": "\/var\/log\/ceph\/ceph-mds.tree01.log",
"keyring": "\/var\/lib\/ceph\/mds\/ceph-tree01\/keyring",
"mon_max_mdsmap_epochs": "500",
"mon_mds_force_trim_to": "0",
"mon_debug_dump_location": "\/var\/log\/ceph\/ceph-mds.tree01.tdump",
"client_use_random_mds": "false",
"mds_data": "\/var\/lib\/ceph\/mds\/ceph-tree01",
"mds_max_file_size": "1099511627776",
"mds_cache_size": "100000",
"mds_cache_mid": "0.7",
"mds_max_file_recover": "32",
"mds_mem_max": "1048576",
"mds_dir_max_commit_size": "10",
"mds_decay_halflife": "5",
"mds_beacon_interval": "4",
"mds_beacon_grace": "15",
"mds_enforce_unique_name": "true",
"mds_blacklist_interval": "1440",
"mds_session_timeout": "120",
"mds_revoke_cap_timeout": "60",
"mds_recall_state_timeout": "60",
"mds_freeze_tree_timeout": "30",
"mds_session_autoclose": "600",
"mds_health_summarize_threshold": "10",
"mds_reconnect_timeout": "45",
"mds_tick_interval": "5",
"mds_dirstat_min_interval": "1",
"mds_scatter_nudge_interval": "5",
"mds_client_prealloc_inos": "1000",
"mds_early_reply": "true",
"mds_default_dir_hash": "2",
"mds_log": "true",
"mds_log_skip_corrupt_events": "false",
"mds_log_max_events": "-1",
"mds_log_events_per_segment": "1024",
"mds_log_segment_size": "0",
"mds_log_max_segments": "30",
"mds_log_max_expiring": "20",
"mds_bal_sample_interval": "3",
"mds_bal_replicate_threshold": "8000",
"mds_bal_unreplicate_threshold": "0",
"mds_bal_frag": "false",
"mds_bal_split_size": "10000",
"mds_bal_split_rd": "25000",
"mds_bal_split_wr": "10000",
"mds_bal_split_bits": "3",
"mds_bal_merge_size": "50",
"mds_bal_merge_rd": "1000",
"mds_bal_merge_wr": "1000",
"mds_bal_interval": "10",
"mds_bal_fragment_interval": "5",
"mds_bal_idle_threshold": "0",
"mds_bal_max": "-1",
"mds_bal_max_until": "-1",
"mds_bal_mode": "0",
"mds_bal_min_rebalance": "0.1",
"mds_bal_min_start": "0.2",
"mds_bal_need_min": "0.8",
"mds_bal_need_max": "1.2",
"mds_bal_midchunk": "0.3",
"mds_bal_minchunk": "0.001",
"mds_bal_target_removal_min": "5",
"mds_bal_target_removal_max": "10",
"mds_replay_interval": "1",
"mds_shutdown_check": "0",
"mds_thrash_exports": "0",
"mds_thrash_fragments": "0",
"mds_dump_cache_on_map": "false",
"mds_dump_cache_after_rejoin": "false",
"mds_verify_scatter": "false",
"mds_debug_scatterstat": "false",
"mds_debug_frag": "false",
"mds_debug_auth_pins": "false",
"mds_debug_subtrees": "false",
"mds_kill_mdstable_at": "0",
"mds_kill_export_at": "0",
"mds_kill_import_at": "0",
"mds_kill_link_at": "0",
"mds_kill_rename_at": "0",
"mds_kill_openc_at": "0",
"mds_kill_journal_at": "0",
"mds_kill_journal_expire_at": "0",
"mds_kill_journal_replay_at": "0",
"mds_journal_format": "1",
"mds_kill_create_at": "0",
"mds_inject_traceless_reply_probability": "0",
"mds_wipe_sessions": "false",
"mds_wipe_ino_prealloc": "false",
"mds_skip_ino": "0",
"max_mds": "1",
"mds_standby_for_name": "",
"mds_standby_for_rank": "-1",
"mds_standby_replay": "false",
"mds_enable_op_tracker": "true",
"mds_op_history_size": "20",
"mds_op_history_duration": "600",
"mds_op_complaint_time": "30",
"mds_op_log_threshold": "5",
"mds_snap_min_uid": "0",
"mds_snap_max_uid": "65536",
"mds_verify_backtrace": "1",
"mds_action_on_write_error": "1",
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