Hello, Sorry for bringing this up again.
What is the proper way to adjust the scrub settings ? Can I use injectargs ? ------- ceph tell osd.* injectargs '--osd_scrub_sleep .1' ------- Or do I have to use set manually in each osd daemons ? --- ceph daemon osd.21 set osd_scrub_sleep .1 ---- While using both it shows (not observed, change may require restart) So is it not set ? Karun Josy On Mon, Jan 15, 2018 at 7:16 AM, shadow_lin <[email protected]> wrote: > hi, > you can try to adjusting osd_scrub_chunk_min,osd_scrub_chunk_max and > osd_scrub_sleep. > > > osd scrub sleep > > Description: Time to sleep before scrubbing next group of chunks. > Increasing this value will slow down whole scrub operation while client > operations will be less impacted. > Type: Float > Default: 0 > > osd scrub chunk min > > Description: The minimal number of object store chunks to scrub during > single operation. Ceph blocks writes to single chunk during scrub. > Type: 32-bit Integer > Default: 5 > > > 2018-01-15 > ------------------------------ > lin.yunfan > ------------------------------ > > *发件人：*Karun Josy <[email protected]> > *发送时间：*2018-01-15 06:53 > *主题：*[ceph-users] Limit deep scrub > *收件人：*"ceph-users"<[email protected]> > *抄送：* > > 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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