Hello,
i have a strange issue and hope you can enlighten me why this happens
and how i can prevent this.
In ceph.conf i have:
... .. .
[osd]
osd_deep_scrub_interval = 2419200.000000
osd_scrub_max_interval = 2419200.000000
osd_scrub_begin_hour = 10 <= this works, great
osd_scrub_end_hour = 17 <= this works, great
But as you can see below, this seems to be not respected from ceph:
# zgrep -i "deep-scrub ok" ceph-osd.285* (logfile)
2021-10-21 14:31:12.180689 7facaf28b700 0 log_channel(cluster) log
[DBG] : *1.752* deep-scrub ok
2021-10-20 13:17:31.502227 7facb0a8e700 0 log_channel(cluster) log
[DBG] : 1.51 deep-scrub ok
2021-10-17 13:45:46.243041 7facafa8c700 0 log_channel(cluster) log
[DBG] : 1.4c2 deep-scrub ok
2021-10-17 17:25:55.570801 7facb028d700 0 log_channel(cluster) log
[DBG] : 1.81d deep-scrub ok
2021-10-16 11:36:58.695621 7facaf28b700 0 log_channel(cluster) log
[DBG] : *1.752* deep-scrub ok
2021-10-16 16:11:50.399225 7facb0a8e700 0 log_channel(cluster) log
[DBG] : 1.51 deep-scrub ok
i.e. *deep-scrub" on PG "1.752" (also same issue on i.e. "1.51") is done
- 2021-10-21 14:31:12
- 2021-10-16 11:36:58
there are only 5 days inbetween, if i understand this correct ceph
should wait approx. 4 Weeks (2419200 Seconds) before another deepscrub
of one PG has to be happen.
The cluster is in an "Health_OK" state (sometimes in warm because of
slow requests) and i have checked that the config is in effekt on the
said OSD in this example (osd.285):
# ceph daemon osd.285 config show | grep "interval" | grep scrub
"mon_scrub_interval": "86400",
"osd_deep_scrub_interval": "2419200.000000",
"osd_scrub_interval_randomize_ratio": "0.500000",
"osd_scrub_max_interval": "2419200.000000",
"osd_scrub_min_interval": "86400.000000",
Does anyone know why this happens?
Hope you guys can help me to understand this.
- Mehmet
Further information - ALL *HDD* - OSDs distributed over 17 Nodes
# ceph -s
cluster:
id: 5d5095e2-e2c7-4790-a14c-86412d98d2dc
health: HEALTH_WARN
435 slow requests are blocked > 32 sec. Implicated osds 84
services:
mon: 3 daemons, quorum cmon01,cmon02,cmon03
mgr: cmon01(active), standbys: cmon03, cmon02
osd: 312 osds: 312 up, 312 in
data:
pools: 2 pools, 3936 pgs
objects: 112M objects, 450 TB
usage: 1352 TB used, 1201 TB / 2553 TB avail
pgs: 3897 active+clean
38 active+clean+scrubbing+deep
1 active+clean+scrubbing
io:
client: 120 MB/s rd, 124 MB/s wr, 820 op/s rd, 253 op/s wr
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