Is it possible to specify root partition size without using RuntimeSize?

[adrianlshaw]

My workflow is to make a bootable image using mkosi, and then use raw qemu on the command line.
Mkosi will default to making a small image, and as far I can see from the documentation, to make it bigger I need to use RuntimeSize with mkosi boot. Sadly this breaks my setup.

[DaanDeMeyer]

@adrianlshaw You can override the default partitions and set the partition sizes explicitly. For example, in systemd we have a custom mkosi.repart/ directory with the following files:

00-esp.conf:

[Partition]
Type=esp
Format=vfat
CopyFiles=/boot:/
CopyFiles=/efi:/
SizeMinBytes=1G
SizeMaxBytes=1G

10-root.conf:

[Partition]
Type=root
CopyFiles=/
SizeMinBytes=8G
SizeMaxBytes=8G

You can adjust the sizes to fit your needs.

[adrianlshaw]

Hi Daan thanks for this! Would this still work when Bootable=yes is in mkosi.default?

[DaanDeMeyer]

@adrianlshaw Yes

[DaanDeMeyer]

@adrianlshaw Note that it's mkosi.conf now instead of mkosi.default.