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 <karunjo...@gmail.com>
发送时间：2018-01-15 06:53
主题：[ceph-users] Limit deep scrub
收件人："ceph-users"<ceph-users@lists.ceph.com>
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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