Ubuntu aarch64 virt-manager

This is step-by-step to add Ubuntu aarch64 vm via virt-manager.

1. Download ubuntu arm64 image from cloud images

   Assume the name of the downloaded image is </path/to/ubuntu-cloudimg-arm64.img>.

   Change the root password of the image with this command

   virt-customize -a <qcow2_img_file.img> --root-password password:<pass>

   NOTE: You might want to resize the image so we can grow the partition later.

   Th example below is to add additional 10 GB to the selected qcow2 image. Change the image path to the one we've downloaded

   qemu-img resize <qcow2_img_file.img> +10G

2. Create varstore.img and varstore-copy.img

   truncate -s 64m </path/to/varstore.img>
   cp </path/to/varstore.img> </path/to/varstore-copy.img>

3. Create efi.img. You might need to install qemu-system-arm

   truncate -s 64m </path/to/efi.img>
   dd if=/usr/share/qemu-efi-aarch64/QEMU_EFI.fd of=</path/to/efi.img> conv=notrunc

4. Open virt-manager. Just forward until the end, BUT DON'T CLICK FINISH YET. Check Customize configuration before install, then click FINISH

5. On the configuration window, edit the XML, and copy-paste xml file ubuntu-arm64.xml attached below. Edit all </path/to/.....> with ones from previous steps.

   You might want to change uuid too

6. Click Begin Installation

Once logged in to vm, you might want to do this

Grow Partition

1. If previously you resize the image with qemu-img resize, you need to grow the Partition with parted. Assuming you logged in as root

   parted /dev/vda

2. Inside this parted execute resizepart <partition_number> 100%, in my case the <partition_number> is 1.

   (parted) resizepart 1 100%
   Warning: Partition /dev/vda<partition_number> is being used. Are you sure you want to continue?
   Yes/No? Yes
   (parted) quit

   If you got response to fix the partition instead, Proceed with Fix until finish, the re-enter resizepart command again after that.

3. Then in bash/sh execute resize2fs /dev/vda<partition_number>, in my case the <partition_number> is 1.

   resize2fs /dev/vda1

4. After this, I think you need to reboot to make partition larger.

Connect to network and internet

Since I didn't use cloud-init to set preset data, I don't have dhcp client and my NIC is down.

For this steps, assume the NIC is eth0. Please check the actual NIC name with ip -br a.

Also I use virbr as the bridge with subnet is 192.168.122.0/24

1. Add temporary IP address and Link the NIC up

   ip addr add 192.168.122.10/24 dev eth0
   ip link set eth0 up

2. Set the route to connect to internet

   ip route add default via 192.168.122.1 dev eth0

3. At this stage, you should be able to connect to internet, but somehow there's no DNS resolver.

   Edit /etc/systemd/resolved.conf since ubuntu uses systemd-resolved.

   Add any available resolvers. Your /etc/systemd/resolved.conf might look like this

   [Resolve]
   DNS=8.8.8.8 1.1.1.1
   FallbackDNS=1.0.0.1

4. restart systemd-resolved

   systemctl restart systemd-resolved

5. Now, install dhcpcd for DHCP client

   apt update
   apt install dhcpcd
   systemctl restart dhcpcd.service