Scope/Description

This article details the process of changing your OS from FreeNAS to Ubuntu/CentOS. It includes the process of importing the pool and making necessary changes.

Prerequisites

A FreeNas pool configured and Houston running on CentOS7/Ubuntu 20.04

Steps

FreeNAS System

• Take note of everything configured (Share, Groups-Users, IPs)
• Export the pool through the Web UI by detaching the pool. Click the cog on the pool and click detach

• To confirm export run “zpool import” in the shell
• Now remove the boot drives and boot with the new imaged boot drives with the new OS.

Houston

• Boot the system and log into Houston
• Update the system.

On CentOS7: yum update
On Ubuntu 20.40: apt update && apt upgrade

• Look for your FreeNAS pool by running the following command:

zpool import

• To use our device aliasing tools run “dmap” in the terminal.

root@45drives:~# dmap
root@45drives:~# lsdev

• Go to the ZFS tab and click import pool

• Go to the shell and run “zpool status” to confirm

root@45drives:~# zpool status

• Run “zpool upgrade (poolname)”

root@45drives:~# zpool upgrade poolname

• Delete all the extra unused FreeNAS datasets

• To finish setting up your shares for certain use cases, see the guide(s) below.

KB450281 – Managing SMB/CIFS in Houston UI

KB450282 – Managing NFS in Houston UI

KB450299- Setup iSCSI Storage Server on Ubuntu 20.04 LTS

Verification

Troubleshooting