osd_max_scrubs = 1 means each osd can only be involved in a single scrub operation at a time. There isn't a setting for the maximum amount of scrubs per cluster, just per osd.
On Sun, Jan 14, 2018, 12:23 PM Karun Josy <karunjosy1@xxxxxxxxx> wrote:
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-scrubWhen 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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