Hi all,
Something that I am curious about:
Suppose I have a three-server cluster, all with identical OSDs
configuration, and also a replication factor of three.
That would mean (I guess) that all 3 servers have a copy of everything
in the ceph pool.
My question: given that every machine has all the data, does that also
imply that reads will be LOCAL on each machine?
I'm asking because I understand that each PG has one primary copy
optionally with extra secondary copies. (depending on the replication
factor)
I have the feeling that local reads will usually be faster than reads
over the network.
And if this is not the case, then why not? :-)
Thanks for any insights or pointers!
MJ
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