I noticed when changing some settings, they appear to stay the same, for example when trying to set this higher:
ceph tell 'osd.*' injectargs '--osd-recovery-max-active 4'
It gives the usual warning about may need to restart, but it still has the old value:
# ceph --show-config | grep osd_recovery_max_active
osd_recovery_max_active = 3
osd_recovery_max_active = 3
restarting the OSDs seems fairly intrusive for every configuration change.
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