How do I replicate a dataset?

TrueNAS General
1

Hey there, I’ve recently installed a new larger pool of drives and I wanted to migrate over my old pool in a way that keeps all of my app configs working and the same underlying folder structure the same.

I ran an rsync from my old pool to my new one and it has completed, however when I view the dataset it doesn’t show any of the sub-datasets (or sub directories) that I can see actually exist in the shell:

I can’t include a screenshot for some reason but it looks like this:

- storage
       - configs
       - media
       - etc

- storage2 (empty, no sub-datasets)

It just shows empty. Is there a way I can import the dataset sub directory definitions so that it shows up correctly here? My intention is once everything was moved from storage to storage2 that I would just rename the datasets to swap them over, and since they’re an exact copy of each other my app configs and directories should all be in the correct place.

But not having the subdirectories show up in the datasets will likely mess up any existing configs (or at least new ones that I want to point to subdirectories here).

I tried manually recreating the sub datasets but because they already exist in the filesystem it won’t allow me to. Is there an easy way for me to do this without re-copying all the data?

2

To replicate a dataset, replicate the dataset–use ZFS replication for this.

3

I’m assuming this requires that I clean out the entire new pool?

I tried doing some replication tasks through the GUI but kept running into different errors requiring that I have specific snapshot schedules created already. Any chance there’s a decent guide out there I can run through?

4