tests/acceptance: Test the virtio-balloon device on s390x

Inflate the balloon and check whether the size of the memory changes.

Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Tested-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201215183623.110128-4-thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

diff --git a/tests/acceptance/machine_s390_ccw_virtio.py b/tests/acceptance/machine_s390_ccw_virtio.py
index e1ad0e29b0cd13ad184416f8aa3222b166ca6008..abe25a08f0eef7f6f2fb3a8d96ec4b0a17a66e66 100644 (file)
--- a/tests/acceptance/machine_s390_ccw_virtio.py
+++ b/tests/acceptance/machine_s390_ccw_virtio.py
@@ -70,7 +70,8 @@ class S390CCWVirtioMachine(Test):
                          '-device', 'zpci,uid=5,target=zzz',
                          '-device', 'virtio-net-pci,id=zzz',
                          '-device', 'zpci,uid=0xa,fid=12,target=serial',
-                         '-device', 'virtio-serial-pci,id=serial')
+                         '-device', 'virtio-serial-pci,id=serial',
+                         '-device', 'virtio-balloon-ccw')
         self.vm.launch()
 
         shell_ready = "sh: can't access tty; job control turned off"
@@ -140,3 +141,12 @@ class S390CCWVirtioMachine(Test):
         exec_command_and_wait_for_pattern(self,
                                           'ls /sys/bus/ccw/devices/0.0.4711',
                                           'No such file or directory')
+        # test the virtio-balloon device
+        exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
+                                          'MemTotal:         115640 kB')
+        self.vm.command('human-monitor-command', command_line='balloon 96')
+        exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
+                                          'MemTotal:          82872 kB')
+        self.vm.command('human-monitor-command', command_line='balloon 128')
+        exec_command_and_wait_for_pattern(self, 'head -n 1 /proc/meminfo',
+                                          'MemTotal:         115640 kB')