Make the size of the persistent disk configurable

[davidhsingyuchen]

What is the problem you're trying to solve?.

I have an container image that is larger than the size of the persistent disk, which is currently hardcoded to 50G:

finch/pkg/disk/disk.go

Line 25 in fb78051

diskSize = "50G"

More info: #231

Describe the feature you'd like

A field in finch.yaml that lets me specify the size of the persistent disk. After I update the value, stop the VM, and then start the VM, the value should take effect.

[ollypom]

Until this gets implemented, a workaround to increase the size of the VM Disk (replace +50G with an appropriate value):

# stop VM
finch vm stop

# Resize the disk image
/Applications/Finch/lima/bin/qemu-img resize /Applications/Finch/lima/data/_disks/finch/datadisk +50G

# Start the VM
finch vm start

# Grow the partition
LIMA_HOME=/Applications/Finch/lima/data /Applications/Finch/lima/bin/limactl shell finch sudo bash -c "growpart /dev/vdb 1"

# Resize the fs
LIMA_HOME=/Applications/Finch/lima/data /Applications/Finch/lima/bin/limactl shell finch sudo bash -c "resize2fs /dev/vdb1"

To check this has been implemented:

LIMA_HOME=/Applications/Finch/lima/data /Applications/Finch/lima/bin/limactl shell finch df -H