tests/acceptance: wait() instead of shutdown() where appropriate

When issuing 'reboot' to a VM with the no-reboot option, that VM will
exit. When then issuing a shutdown command, the cleanup may race.

Add calls to vm.wait() which will gracefully mark the VM as having
exited. Subsequent vm.shutdown() calls in generic tearDown code will not
race when called after completion of the call.

Signed-off-by: John Snow <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Cleber Rosa <[email protected]>
Tested-by: Cleber Rosa <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Philippe Mathieu-Daudé <[email protected]>

Author: jnsnow

tests/acceptance/boot_linux_console.py

@@ -191,6 +191,8 @@ def test_mips_malta_cpio(self):
                                                 'Debian')
         exec_command_and_wait_for_pattern(self, 'reboot',
                                                 'reboot: Restarting system')
+        # Wait for VM to shut down gracefully
+        self.vm.wait()
 
     @skipUnless(os.getenv('AVOCADO_ALLOW_UNTRUSTED_CODE'), 'untrusted code')
     def test_mips64el_malta_5KEc_cpio(self):
@@ -231,6 +233,8 @@ def test_mips64el_malta_5KEc_cpio(self):
                                                 '3.19.3.mtoman.20150408')
         exec_command_and_wait_for_pattern(self, 'reboot',
                                                 'reboot: Restarting system')
+        # Wait for VM to shut down gracefully
+        self.vm.wait()
 
     def do_test_mips_malta32el_nanomips(self, kernel_url, kernel_hash):
         kernel_path_xz = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
@@ -506,6 +510,7 @@ def test_arm_cubieboard_initrd(self):
                                                 'system-control@1c00000')
         exec_command_and_wait_for_pattern(self, 'reboot',
                                                 'reboot: Restarting system')
+        # NB: Do not issue vm.wait() here, cubieboard's reboot does not exit!
 
     def test_arm_cubieboard_sata(self):
         """
@@ -550,6 +555,7 @@ def test_arm_cubieboard_sata(self):
                                                 'sda')
         exec_command_and_wait_for_pattern(self, 'reboot',
                                                 'reboot: Restarting system')
+        # NB: Do not issue vm.wait() here, cubieboard's reboot does not exit!
 
     def test_arm_orangepi(self):
         """
@@ -615,6 +621,8 @@ def test_arm_orangepi_initrd(self):
                                                 'system-control@1c00000')
         exec_command_and_wait_for_pattern(self, 'reboot',
                                                 'reboot: Restarting system')
+        # Wait for VM to shut down gracefully
+        self.vm.wait()
 
     def test_arm_orangepi_sd(self):
         """
@@ -662,6 +670,8 @@ def test_arm_orangepi_sd(self):
             '3 packets transmitted, 3 packets received, 0% packet loss')
         exec_command_and_wait_for_pattern(self, 'reboot',
                                                 'reboot: Restarting system')
+        # Wait for VM to shut down gracefully
+        self.vm.wait()
 
     @skipUnless(os.getenv('AVOCADO_ALLOW_LARGE_STORAGE'), 'storage limited')
     @skipUnless(P7ZIP_AVAILABLE, '7z not installed')

tests/acceptance/linux_ssh_mips_malta.py

@@ -212,6 +212,8 @@ def check_mips_malta(self, uname_m, endianess):
 
         self.run_common_commands(wordsize)
         self.shutdown_via_ssh()
+        # Wait for VM to shut down gracefully
+        self.vm.wait()
 
     def test_mips_malta32eb_kernel3_2_0(self):
         """