Migrating from mirrors to RAIDZ2

[etorix]

HOWTO: Rename a ZFS pool

The basic process to rename a ZFS pool is to export it from the GUI, import it in the CLI with the new name, then export it again, and re-import it in the GUI. I find I normally want to do this after creating a new pool (with perhaps a different set of disks/layout), replicating my old pool to the new pool, and then I want to rename the new pool to the same as the old pool, and then all the shares work correctly, and its fairly transparent. Mostly. (tested with TrueNAS CORE 12U8-1. Works with …

In this case however, you’d be replicating data01 to temporary data02, and then creating a new data01 pool and replicating from data02 “back” to data01 so renaming should not be necessary.