Hi
I thought that min_size in crush is obvious, but the more I read the more
I tend to doubt. So I might as well ask:
With a crushmap like this
===
type 0 device
type 1 host
type 2 root
[definitions for the above; hosts contain devices, root contains hosts]
rule data {
ruleset 0
type replicated
min_size 2
max_size 2
step take root
step chooseleaf firstn 0 type host
step emit
}
===
does "min_size 2, max_size 2" mean that I want "2 copies of the data on each
host" or "2 copies of the data in total in the entire cluster"?
Z
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