红帽全球峰会4.14. 设置对象副本数
要在复制池中设置对象副本数量，请执行以下命令：
ceph osd pool set <poolname> size <num-replicas>
ceph osd pool set <poolname> size <num-replicas>重要
<num-replicas> 参数包含对象本身。如果要为对象总计三个实例包含对象的对象和两个副本，请指定 3。
例如：
ceph osd pool set data size 3
ceph osd pool set data size 3您可以对每个池执行此命令。
注意
对象可能会接受降级模式中的 I/O 操作，其副本数比 池大小 设置所指定少。要为 I/O 设置最小副本数，请使用 min_size 设置。例如：
ceph osd pool set data min_size 2
ceph osd pool set data min_size 2
这样可确保数据池中没有对象接收的副本数少于 min_size 设置所指定数量的 I/O。
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