Dear Ceph users,
I am trying to tune my cluster's recovery and backfill. On the web I
found that I can set related tunables by e.g.:
ceph tell osd.* injectargs --osd-recovery-sleep-hdd=0.0
--osd-max-backfills=8 --osd-recovery-max-active=8
--osd-recovery-max-single-start=4
but I cannot find a way to be sure that the settings have been correctly
applied and are being honored. Actually, when querying OSD settings I
get e.g.:
# ceph config show osd.0 | grep osd_max_backfill
osd_max_backfills 1000
override
This does not change even if I try to set just a single property for a
single osd:
# ceph tell osd.0 injectargs --osd-max-backfills=8
{}
osd_max_backfills = '8' osd_recovery_max_active = '1000'
# ceph config show osd.0 | grep osd_max_backfills
osd_max_backfills 1000
override
Am I overlooking or doing something wrong?
Thanks,
Nicola
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