set the disk size

Vagrantfile

@@ -26,11 +26,13 @@ Vagrant.configure(2) do |config|
     config.vm.network 'private_network', ip: nexus_ip
     config.vm.provider :libvirt do |lv, config|
       lv.memory = 3*1024
+      lv.machine_virtual_size = 32 # [GiB]
       config.vm.synced_folder '.', '/vagrant', type: 'nfs', nfs_version: '4.2', nfs_udp: false
     end
     config.vm.provider :virtualbox do |vb, config|
       vb.memory = 3*1024
     end
+    config.vm.provision :shell, path: 'provision/provision-resize-disk.sh'
     config.vm.provision :shell, path: 'provision/provision-base.sh'
     config.vm.provision :shell, path: 'provision/provision-docker.sh'
     config.vm.provision :shell, path: 'provision/provision-nexus.sh'

provision/provision-resize-disk.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+set -euo pipefail
+
+partition_device="$(findmnt -no SOURCE /)"
+partition_number="$(echo "$partition_device" | perl -ne '/(\d+)$/ && print $1')"
+disk_device="$(echo "$partition_device" | perl -ne '/(.+?)\d+$/ && print $1')"
+
+# resize the partition table.
+parted ---pretend-input-tty "$disk_device" <<EOF
+resizepart $partition_number 100%
+yes
+EOF
+
+# resize the file system.
+resize2fs "$partition_device"