Hi,
Quoting the page https://docs.ceph.com/en/latest/architecture/
location query over a chatty session. The CRUSH algorithm allows a
client to compute where objects should be stored, and enables the
client to contact the primary OSD to store or retrieve the objects.
So clients contact the *primary* OSD to store/retrieve objects.
Why do clients not contact secondary (or even tertiary) OSDs for reading
data? Would that not (potentially) result in greatly improved performance..?
I'm sure there are good reasons for the current behaviour, but it seems
logical, since you have multiple copies of the same data, to try and use
the nearest copy?
Curious :-)
MJ
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