ansible: add swapfile creation for FreeBSD

Author: richardlau

ansible/inventory.yml

@@ -122,7 +122,7 @@ hosts:
         fedora40-x64-2: {ip: 162.243.187.89}
         freebsd12-x64-1: {ip: 45.55.90.237, user: freebsd}
         freebsd12-x64-2: {ip: 107.170.28.213, user: freebsd}
-        freebsd13-x64-1: {ip: 138.197.25.49, user: freebsd}
+        freebsd13-x64-1: {ip: 138.197.25.49, user: freebsd, swap_file_size_mb: 2048}
         rhel8-x64-1: {ip: 161.35.139.78, build_test_v8: yes, swap_file_size_mb: 2048}
         rhel9-x64-1: {ip: 134.122.12.240, swap_file_size_mb: 2048}
         ubuntu2204_docker-x64-1: {ip: 134.209.55.216}

ansible/roles/bootstrap/tasks/partials/freebsd.yml

@@ -0,0 +1,39 @@
+---
+
+#
+# FreeBSD
+#
+
+# Assumes swap_file_size_mb has been set.
+- name: create swapfile
+  ansible.builtin.command:
+    cmd: dd if=/dev/zero of=/{{ swap_file }} bs=1M count={{ swap_file_size_mb }}
+    creates: "{{ swap_file }}"
+  become: yes
+  become_user: root
+  register: swap_create
+
+- name: set swapfile permissions
+  ansible.builtin.file:
+    mode: 0600
+    owner: root
+    path: "{{ swap_file }}"
+
+- name: set up swap area
+  ansible.builtin.command:
+    cmd: mdconfig -a -t vnode -f {{ swap_file }} -u 0
+  when: swap_create.changed
+
+- name: enable swap
+  ansible.builtin.command:
+    cmd: swapon /dev/md0
+  when: swap_create.changed
+
+- name: add swap to fstab
+  ansible.posix.mount:
+    fstype: swap
+    opts: "sw,file={{ swap_file }},late"
+    path: none
+    src: md0
+    state: present
+  when: swap_create.changed