Move from RPi4 4GB > 8GB

poudenes · February 17, 2021, 4:38pm

Hi All,

Can i replace my RPi4 4GB without any problems to a 8GB?
In my router i need to change the mac address so it gets the same IP number.

But wondering if this can be done without strange errors etc.

tom_l · February 17, 2021, 5:08pm

I think you can swap the SD card between the pi4’s without issue. There’s only the one 64bit image for this hardware.

Whether or not it will pick up the extra RAM on start up… I’m not sure.

Make a full snapshot and copy it off the card before you do, just in case.

poudenes · February 17, 2021, 6:23pm

I already have Debian 10 64Bit installed. I will make a backup and see what happen

tom_l · February 17, 2021, 6:29pm

Well that’s very relevant information you should have included in your first post.

If you are not running Home Assistant OS on the SD card forget what I said.

poudenes · February 17, 2021, 6:36pm

Sorry, no i’m running Debian 10 64Bit on a SSD, and Home Assistant in a docker.

System Health

Version	core-2021.2.3
Installation Type	Home Assistant Supervised
Development	false
Supervisor	true
Docker	true
Virtual Environment	false
Python Version	3.8.7
Operating System Family	Linux
Operating System Version	5.4.79-v8+
CPU Architecture	aarch64
Timezone	Europe/Amsterdam

Home Assistant Community Store

GitHub API	ok
Github API Calls Remaining	4928
Installed Version	1.11.3
Stage	running
Available Repositories	748
Installed Repositories	38

Hass.io

Host Operating System	Debian GNU/Linux 10 (buster)
Update Channel	stable
Supervisor Version	supervisor-2021.02.9
Docker Version	20.10.1
Disk Total	109.7 GB
Disk Used	23.4 GB
Healthy	true
Supported	true
Supervisor API	ok
Version API	ok
Installed Add-ons	Let’s Encrypt (4.11.0), Mosquitto broker (5.1), Z-Wave to MQTT (0.9.2), Check Home Assistant configuration (3.6.0), Home Assistant Google Drive Backup (0.103.1), AdGuard Home (3.0.0), Portainer (1.4.0), WireGuard (0.5.0), Visual Studio Code (3.1.0), MariaDB (2.2.1), InfluxDB (4.0.3), Grafana (6.1.1), Nextcloud Backup (0.15.0), Bitwarden RS (0.8.0), Mailserver (1.1.3), phpMyAdmin (0.2.0), Signal Messenger (0.34), Nginx Proxy Manager (0.10.0), DSMR Reader (0.0.4), TimescaleDB (1.1.6), TooGoodToGo Home Assistant MQTT Bridge (1.4.0), pgAdmin4 (1.1.0), FTP (4.0.0)

Lovelace

Dashboards	1
Resources	31
Views	13
Mode	storage

Spotify

Spotify API endpoint reachable

Vlad · February 17, 2021, 9:03pm

You have couple options:

Fixed IP address
Go to Supervisor ==> System ==> Host System ==> IP Address and hit CHANGE

poudenes · February 17, 2021, 9:15pm

I have add the Mac address into my router and gave it a fixed IP
My only concern is can I switch SSD to new RPI4 8GB without problem.

Shutdown old RPi
change MAC address in router
connect SSD to new RPi
Turn it on.

Vlad · February 17, 2021, 9:26pm

If you’ll change IP Address on PI4 Supervisor ==> System ==> ==> Host System, router will pick new MAC for IP address. Old one will be/should removed/disabled from router, by router automatically.
Not sure if about switching SSD, many dependences.
You can do following to be save:
Create snapshot, save on NAS or local computer drive.
In case something goes wrong, when you swap SSD you can restore snapshot. Not full, but choosing items to restore.

poudenes · February 17, 2021, 9:30pm

Yes the current using SSD will be the same. So disconnect SSD from the old pi and connect to the new one. I will always make snapshot before those kind of things.

But would be nice if nothing goes wrong haha

Vlad · February 17, 2021, 9:34pm

For me best one is Samba Backup: Create and store snapshots on a Samba share

poudenes · February 17, 2021, 9:36pm

I use Nextcloud Backup. All snapshots will be uploaded to Nextcloud…

poudenes · February 20, 2021, 9:48am

Ok,

DONE… Had some issues:

Supervisor > System > IP address > Change
I fill in all the info on DHCP mode (hard Mac address in router for static IP)
But when I enter it, the IP number is not showing.

The system is working, also all external stuff like Ngnix Proxy

There where no issues based in 4GB to 8GB:

root@ha:/home/poudenes# free
              total        used        free      shared  buff/cache   available
Mem:          7.7Gi       1.4Gi       4.4Gi        18Mi       1.9Gi       6.4Gi
Swap:            0B          0B          0B

Amount in use was same on 4GB. Now will start some more docker Addons.
But this seems ok

poudenes · February 21, 2021, 8:16am

Also the issue with the IP number is solved. Reboot HA and now I see the given IP number.

viseshrp · March 4, 2024, 10:36pm

Thanks for documenting your approach. This was very helpful.