Ceph Replication Rule

E

ermanishchawla

Well-Known Member
Mar 23, 2020
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What is the difference between Crush Rule1

Rule 1
Code: 
rule replicated_rule1 {
    id 0
    type replicated
    min_size 1
    max_size 10
    step take default
    step chooseleaf firstn 0 type chassis
    step emit
}

Rule2
Code: 
rule replicated_rule2 {
    id 0
    type replicated
    min_size 1
    max_size 10
    step take default
    step chooseleaf firstn 0 type chassis
    step chooseleaf firstn 1 type hosts
    step chooseleaf firstn 1 type osd
    step emit
}


As I am seeing similar outcome in ceph

Can anyone explain
 
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