ceph data replication not even on every osds

[buddy.cao@xxxxxxxxx (Cao, Buddy)]

Hi,

I set the same weight for all the hosts, same weight for all the osds under the hosts in crushmap, and set pool replica size to 3. However, after upload 1M/4M/400M/900M files to the pool, I found the data replication is not even on every osds and the utilization for the osds are not the same, they are 25% to 70% respectively. Could you advice, it's the nature of ceph, or there are some tricky setting in crushmap?

Rule r1 {
         ruleset 0
         type replicated
         min_size 0
         max_size 10
         step take root
         step chooseleaf firstn 0 type host
         step emit
}

Wei Cao (Buddy)

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