Quoting Frank Schilder (frans(a)dtu.dk):
Dear Stefan,
is it possible that there is a mistake in the documentation or a bug? Out of curiosity, I
restarted one of these OSDs and the memory usage starts going up:
ceph 881203 15.4 4.0 6201580 5344764 ? Sl 09:18 6:38 /usr/bin/ceph-osd
--cluster ceph -f -i 243 --setuser ceph --setgroup disk
The documentation of ods_memory_target says "Can update at runtime: true", but
it seems that a restart is required to activate the setting, so it can *not* be updated at
runtime (meaning it takes effect without restart).
Ah, that might be. If the documentation states it can be updated at
runtime it's a bug (in eiter the code or the documentation).
In addition to that, I would like to have different default memory
targets set for different device classes. Unfortunately, there seem
not to be different memory_target_[devide class] default options. Is
there a good way to set different while avoiding to bloat "ceph config
dump" unnecessarily?
I'm afraid not. You might want to file a tracker issue with an
enhancement request.
Gr. Stefan
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