Fix #61, 62: very frequent freezing of VM during teardown

This will only mitigate the issue and doesn't fix the root cause. The
action doesn't shutdown the VM anymore. Since the action is run
inside a VM itself, everything will be cleaned up automatically.
Hopefully this will make the issue less likely to occur.

.github/workflows/ci.yml

@@ -255,6 +255,54 @@ jobs:
           hypervisor: qemu
           run: dmesg | grep -i avx2
 
+  test-no-vm-shutdown:
+    timeout-minutes: 5
+    name: Test not shutting down the VM
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Test
+        uses: ./
+        with:
+          operating_system: freebsd
+          architecture: x86-64
+          version: '13.2'
+          hypervisor: qemu
+          shutdown_vm: false
+          run: true
+
+      - name: Verify VM is still running
+        run: ps aux | grep -q qemu
+
+  test-vm-shutdown:
+    timeout-minutes: 5
+    name: Test shutting down the VM
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Test
+        uses: ./
+        with:
+          operating_system: freebsd
+          architecture: x86-64
+          version: '13.2'
+          hypervisor: qemu
+          shutdown_vm: true
+          run: true
+
+      - name: Verify VM is not running
+        run: ps aux | grep -q -v qemu
+
   test-sync-files:
     timeout-minutes: 5
     name: 'Test sync files: ${{ matrix.data.direction }}'

action.yml

@@ -49,6 +49,11 @@ inputs:
       machine and in which direction. Valid values are `true`, `false`,
       `runner-to-vm` and `vm-to-runner`.
     default: 'true'
+  shutdown_vm:
+    required: false
+    description: |
+      Specifies if the VM should be shutdown after the action has been run.
+    default: true
 
 runs:
   using: node20

changelog.md

@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Added support for specifying that the VM should not shutdown after the action
+    has run. This adds a new input parameter: `shutdown_vm`. When set to `false`,
+    this will hopefully mitigate very frequent freezing of VM during teardown ([#61](https://github.com/cross-platform-actions/action/issues/61), [#72](https://github.com/cross-platform-actions/action/issues/72)).
+
 ### Changed
 - Run any SSH commands to the VM in verbose mode when debug mode is enabled
 

readme.md

@@ -128,6 +128,7 @@ This section lists the available inputs for the action.
 | `hypervisor`            | ❌       | `xhyve` or `qemu` | string  | The hypervisor to use for running the virtual machine. For Linux runners the only valid value is `qemu`. For macOS runners the default for OpenBSD and FreeBSD is `xhyve` for all other platforms the default is `qemu`.                                     |
 | `image_url`             | ❌       | ❌                | string  | URL a custom VM image that should be used in place of the default ones.                                                                                                                                                                                      |
 | `sync_files`            | ❌       | `true`            | string  | Specifies if the local files should be synchronized to the virtual machine and in which direction. Valid values are `true`, `false`, `runner-to-vm` and `vm-to-runner`. `true` synchronizes files in both directions. `false` disables file synchronization. |
+| `shutdown_vm`           | ❌       | `true`            | boolean | Specifies if the VM should be shutdown after the action has been run.                                                                                                                                                                                        |
 
 All inputs are expected to be of the specified type. It's especially important
 that you specify `version` as a string, using single or

spec/operating_systems/freebsd/freebsd.spec.ts

@@ -9,6 +9,7 @@ import HostQemu from '../../../src/host_qemu'
 import * as hypervisor from '../../../src/hypervisor'
 import * as qemu from '../../../src/qemu_vm'
 import * as xhyve from '../../../src/xhyve_vm'
+import {Input} from '../../../src/action/input'
 
 describe('FreeBSD OperatingSystem', () => {
   class MockHost extends hostModule.Host {
@@ -47,6 +48,7 @@ describe('FreeBSD OperatingSystem', () => {
   let hypervisorDirectory = 'hypervisor/directory'
   let resourcesDirectory = 'resources/directory'
   let firmwareDirectory = 'firmware/directory'
+  let input = new Input()
 
   let config = {
     memory: '4G',
@@ -70,13 +72,15 @@ describe('FreeBSD OperatingSystem', () => {
         hypervisorDirectory,
         resourcesDirectory,
         firmwareDirectory,
+        input,
         config
       )
 
       expect(vmModule).toHaveBeenCalledOnceWith(
         hypervisorDirectory,
         resourcesDirectory,
         architecture,
+        input,
         {
           ...config,
           ssHostPort: 2847,
@@ -102,6 +106,7 @@ describe('FreeBSD OperatingSystem', () => {
           hypervisorDirectory,
           resourcesDirectory,
           firmwareDirectory,
+          input,
           config
         )
 
@@ -123,6 +128,7 @@ describe('FreeBSD OperatingSystem', () => {
           hypervisorDirectory,
           resourcesDirectory,
           firmwareDirectory,
+          input,
           config
         )
 

spec/operating_systems/freebsd/qemu_vm.spec.ts

@@ -4,6 +4,7 @@ import {host} from '../../../src/host'
 import * as os from '../../../src/operating_systems/kind'
 import {Accelerator} from '../../../src/vm'
 import '../../../src/operating_systems/freebsd/freebsd'
+import {Input} from '../../../src/action/input'
 
 describe('FreeBSD QemuVm', () => {
   let memory = '5G'
@@ -17,6 +18,7 @@ describe('FreeBSD QemuVm', () => {
     osKind,
     host.hypervisor
   )
+  let input = new Input()
   let config = {
     memory: memory,
     cpuCount: cpuCount,
@@ -30,7 +32,7 @@ describe('FreeBSD QemuVm', () => {
     userboot: '',
     firmware: ''
   }
-  let vm = new QemuVm('', '', architecture, config)
+  let vm = new QemuVm('', '', architecture, input, config)
 
   let getFlagValue = (flag: string) => vm.command[vm.command.indexOf(flag) + 1]
   let actualMemory = () => getFlagValue('-m')

spec/operating_systems/netbsd/netbsd.spec.ts

@@ -8,6 +8,7 @@ import * as hypervisor from '../../../src/hypervisor'
 import * as qemu from '../../../src/qemu_vm'
 import * as xhyve from '../../../src/xhyve_vm'
 import * as netbsdQemuVm from '../../../src/operating_systems/netbsd/qemu_vm'
+import {Input} from '../../../src/action/input'
 
 describe('NetBSD OperatingSystem', () => {
   class Host extends hostModule.Host {
@@ -50,6 +51,7 @@ describe('NetBSD OperatingSystem', () => {
   let hypervisorDirectory = 'hypervisor/directory'
   let resourcesDirectory = 'resources/directory'
   let firmwareDirectory = 'firmware/directory'
+  let input = new Input()
 
   let config = {
     memory: '4G',
@@ -67,13 +69,15 @@ describe('NetBSD OperatingSystem', () => {
         hypervisorDirectory,
         resourcesDirectory,
         firmwareDirectory,
+        input,
         config
       )
 
       expect(qemuVmSpy).toHaveBeenCalledOnceWith(
         hypervisorDirectory,
         resourcesDirectory,
         architecture,
+        input,
         {
           ...config,
           ssHostPort: 2847,
@@ -133,13 +137,15 @@ describe('NetBSD OperatingSystem', () => {
           hypervisorDirectory,
           resourcesDirectory,
           firmwareDirectory,
+          input,
           config
         )
 
         expect(qemuVmSpy).toHaveBeenCalledOnceWith(
           hypervisorDirectory,
           resourcesDirectory,
           architecture,
+          input,
           {
             ...config,
             ssHostPort: 2847,

spec/operating_systems/netbsd/qemu_vm.spec.ts

@@ -4,6 +4,7 @@ import {host} from '../../../src/host'
 import * as os from '../../../src/operating_systems/kind'
 import {Accelerator} from '../../../src/vm'
 import '../../../src/operating_systems/netbsd/netbsd'
+import {Input} from '../../../src/action/input'
 
 describe('NetBSD QemuVm', () => {
   let memory = '5G'
@@ -17,6 +18,7 @@ describe('NetBSD QemuVm', () => {
     osKind,
     host.hypervisor
   )
+  let input = new Input()
   let config = {
     memory: memory,
     cpuCount: cpuCount,
@@ -30,7 +32,7 @@ describe('NetBSD QemuVm', () => {
     userboot: '',
     firmware: ''
   }
-  let vm = new Vm('', '', architecture, config)
+  let vm = new Vm('', '', architecture, input, config)
 
   let getFlagValue = (flag: string) => vm.command[vm.command.indexOf(flag) + 1]
   let actualMemory = () => getFlagValue('-m')