Hello, It appears that cluster is having many slow requests while it is scrubbing and deep scrubbing. Also sometimes we can see osds flapping.
So we have put the flags : noscrub,nodeep-scrub When we unset it, 5 PGs start to scrub. Is there a way to limit it to one at a time? # ceph daemon osd.35 config show | grep scrub "mds_max_scrub_ops_in_progress": "5", "mon_scrub_inject_crc_mismatch": "0.000000", "mon_scrub_inject_missing_keys": "0.000000", "mon_scrub_interval": "86400", "mon_scrub_max_keys": "100", "mon_scrub_timeout": "300", "mon_warn_not_deep_scrubbed": "0", "mon_warn_not_scrubbed": "0", "osd_debug_scrub_chance_rewrite_digest": "0", "osd_deep_scrub_interval": "604800.000000", "osd_deep_scrub_randomize_ratio": "0.150000", "osd_deep_scrub_stride": "524288", "osd_deep_scrub_update_digest_min_age": "7200", "osd_max_scrubs": "1", "osd_op_queue_mclock_scrub_lim": "0.001000", "osd_op_queue_mclock_scrub_res": "0.000000", "osd_op_queue_mclock_scrub_wgt": "1.000000", "osd_requested_scrub_priority": "120", "osd_scrub_auto_repair": "false", "osd_scrub_auto_repair_num_errors": "5", "osd_scrub_backoff_ratio": "0.660000", "osd_scrub_begin_hour": "0", "osd_scrub_chunk_max": "25", "osd_scrub_chunk_min": "5", "osd_scrub_cost": "52428800", "osd_scrub_during_recovery": "false", "osd_scrub_end_hour": "24", "osd_scrub_interval_randomize_ratio": "0.500000", "osd_scrub_invalid_stats": "true", "osd_scrub_load_threshold": "0.500000", "osd_scrub_max_interval": "604800.000000", "osd_scrub_min_interval": "86400.000000", "osd_scrub_priority": "5", "osd_scrub_sleep": "0.000000", Karun
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