Hi,
Since our upgrade to 18.2.6 2 days ago, our cluster is reporting the
warning "1 OSD(s) experiencing slow operations in BlueStore":
[root@dig-osd4 bluestore-slow-ops]# ceph health detail
HEALTH_WARN 1 OSD(s) experiencing slow operations in BlueStore
[WRN] BLUESTORE_SLOW_OP_ALERT: 1 OSD(s) experiencing slow operations in
BlueStore
osd.247 observed slow operation indications in BlueStore
I have never seen this warning before so I've the feeling it is somehow
related to the upgrade and it doesn't seem related to the regression
mentioned in another thread (that should result in an OSD crash).
Googling quickly, I found this reported on 19.2.1 with SSD where in my
case it is an HDD. I don't know if the workaround mentioned in the issue
(bdev_xxx_discard=true) also applies to 18.2.6...
Did somebody saw this in 18.2.x? Any recommandation? Our plan was,
according to best practicies described recently in another thread to
move from 18.2.2 to 18.2.6 and then from 18.2.6 to 19.2.2... Will 19.2.2
clear this issue (at the risk of others as it is probably not widely used)?
Best regards,
Michel
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