Stop duplication of files between pools

[Fleshmauler]

I think all of us would appreciate at least the following details so we can help you better:

Joes Rules to Asking for Help

Purpose: To assist people posting clear and informative requests for help and to define the absolute minimum information required in order to provide to the helper what is needed and to reduce assumptions. Joes Rules Be considerate. This rule applies to both the person asking a question as well as the person providing the answer. Do not “assume” we understand what you are talking about. We may be good with a lot of things but mind reading is not one of them. Be detailed in your question…

Output of the following may help:

zpool status