How To: Change the Location of a ZVOL on TrueNas Scale

https://www.truenas.com/community/threads/moving-a-zvol.76574/

1. Log in to the TrueNAS server via SSH and elevate to the root user (if you are not already).
2. Run the zfs list command and look for the full path of the volume you would like to move.
3. Run the command zfs snapshot -r path-to/your-zvol@relocate where @relocate is the name of the snapshot we are creating.
4. Run the command zfs send path-to/your-zvol@relocate | zfs receive -v new-path/to-zvol
5. Wait for the command to complete.
6. Delete the original in the TrueNAS web UI