[PATCH v2 4/4] tests/functional/ppc64: Remove custom migration routine

Fabiano Rosas posted 4 patches 4 days, 17 hours ago
Maintainers: Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>, Nicholas Piggin <npiggin@gmail.com>, Harsh Prateek Bora <harshpb@linux.ibm.com>
[PATCH v2 4/4] tests/functional/ppc64: Remove custom migration routine
Posted by Fabiano Rosas 4 days, 17 hours ago
Don't implement a custom migration routine at PpcMigrationTest and
instead reuse the generic one from MigrationTest.

This removes the dependency of PpcMigrationTest from
PseriesMachine. Having one test import another causes unittest code to
instantiate the imported test, resulting in the setup and teardown
methods being invoked for the imported test class, even if no test
from that class will be executed.

If run in parallel, the extra setup/teardown methods that result from
importing can race with the ones from the actual test being executed
and cause the following error:

File "<SRC_DIR>/tests/functional/qemu_test/testcase.py", line 238, in tearDown
shutil.rmtree(self.workdir)
...
FileNotFoundError: [Errno 2] No such file or directory:
'<SRC_DIR>/build/tests/functional/ppc64/.../test_migration_with_exec/scratch'

Fixes: f4e34d0fd5 ("tests/functional: Add a OS level migration test for pseries")
Reported-by: Aditya Gupta <adityag@linux.ibm.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
---
 tests/functional/migration.py            |  5 +++++
 tests/functional/ppc64/test_migration.py | 11 -----------
 tests/functional/ppc64/test_pseries.py   |  6 ++++--
 3 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/tests/functional/migration.py b/tests/functional/migration.py
index 49347a30bb..e995328e83 100644
--- a/tests/functional/migration.py
+++ b/tests/functional/migration.py
@@ -65,6 +65,11 @@ def _get_free_port(self, ports):
             self.skipTest('Failed to find a free port')
         return port
 
+    def migration_with_tcp_localhost_vms(self, dst_vm, src_vm):
+        with Ports() as ports:
+            uri = 'tcp:localhost:%u' % self._get_free_port(ports)
+            self.migrate_vms(uri, uri, dst_vm, src_vm)
+
     def migration_with_tcp_localhost(self):
         with Ports() as ports:
             dst_uri = 'tcp:localhost:%u' % self._get_free_port(ports)
diff --git a/tests/functional/ppc64/test_migration.py b/tests/functional/ppc64/test_migration.py
index a3b819680b..7d49ee175b 100755
--- a/tests/functional/ppc64/test_migration.py
+++ b/tests/functional/ppc64/test_migration.py
@@ -22,17 +22,6 @@ def test_migration_with_exec(self):
         self.set_machine('mac99')
         self.migration_with_exec()
 
-    def do_migrate_ppc64_linux(self, source_vm, dest_vm):
-        with Ports() as ports:
-            port = ports.find_free_port()
-            if port is None:
-                self.skipTest('Failed to find a free port')
-            uri = 'tcp:localhost:%u' % port
-
-            dest_vm.qmp('migrate-incoming', uri=uri)
-            source_vm.qmp('migrate', uri=uri)
-            self.assert_migration(source_vm, dest_vm)
-
 
 if __name__ == '__main__':
     MigrationTest.main()
diff --git a/tests/functional/ppc64/test_pseries.py b/tests/functional/ppc64/test_pseries.py
index b45763c305..3996a4a878 100755
--- a/tests/functional/ppc64/test_pseries.py
+++ b/tests/functional/ppc64/test_pseries.py
@@ -9,7 +9,7 @@
 
 from qemu_test import QemuSystemTest, Asset
 from qemu_test import wait_for_console_pattern
-from test_migration import PpcMigrationTest
+from migration import MigrationTest
 
 class PseriesMachine(QemuSystemTest):
 
@@ -116,7 +116,9 @@ def test_ppc64_linux_migration(self):
         wait_for_console_pattern(self, console_pattern, self.panic_message,
                                  vm=source_vm)
 
-        PpcMigrationTest().do_migrate_ppc64_linux(source_vm, dest_vm);
+        mt = MigrationTest()
+        mt.timeout = self.timeout
+        mt.migration_with_tcp_localhost_vms(dest_vm, source_vm);
 
         # ensure the boot proceeds after migration
         wait_for_console_pattern(self, self.good_message, self.panic_message,
-- 
2.51.0
Re: [PATCH v2 4/4] tests/functional/ppc64: Remove custom migration routine
Posted by Peter Xu 4 days, 15 hours ago
On Wed, Feb 04, 2026 at 02:23:32PM -0300, Fabiano Rosas wrote:
> Don't implement a custom migration routine at PpcMigrationTest and
> instead reuse the generic one from MigrationTest.
> 
> This removes the dependency of PpcMigrationTest from
> PseriesMachine. Having one test import another causes unittest code to
> instantiate the imported test, resulting in the setup and teardown
> methods being invoked for the imported test class, even if no test
> from that class will be executed.
> 
> If run in parallel, the extra setup/teardown methods that result from
> importing can race with the ones from the actual test being executed
> and cause the following error:
> 
> File "<SRC_DIR>/tests/functional/qemu_test/testcase.py", line 238, in tearDown
> shutil.rmtree(self.workdir)
> ...
> FileNotFoundError: [Errno 2] No such file or directory:
> '<SRC_DIR>/build/tests/functional/ppc64/.../test_migration_with_exec/scratch'
> 
> Fixes: f4e34d0fd5 ("tests/functional: Add a OS level migration test for pseries")
> Reported-by: Aditya Gupta <adityag@linux.ibm.com>
> Signed-off-by: Fabiano Rosas <farosas@suse.de>
> ---
>  tests/functional/migration.py            |  5 +++++
>  tests/functional/ppc64/test_migration.py | 11 -----------
>  tests/functional/ppc64/test_pseries.py   |  6 ++++--
>  3 files changed, 9 insertions(+), 13 deletions(-)
> 
> diff --git a/tests/functional/migration.py b/tests/functional/migration.py
> index 49347a30bb..e995328e83 100644
> --- a/tests/functional/migration.py
> +++ b/tests/functional/migration.py
> @@ -65,6 +65,11 @@ def _get_free_port(self, ports):
>              self.skipTest('Failed to find a free port')
>          return port
>  
> +    def migration_with_tcp_localhost_vms(self, dst_vm, src_vm):
> +        with Ports() as ports:
> +            uri = 'tcp:localhost:%u' % self._get_free_port(ports)
> +            self.migrate_vms(uri, uri, dst_vm, src_vm)
> +
>      def migration_with_tcp_localhost(self):
>          with Ports() as ports:
>              dst_uri = 'tcp:localhost:%u' % self._get_free_port(ports)
> diff --git a/tests/functional/ppc64/test_migration.py b/tests/functional/ppc64/test_migration.py
> index a3b819680b..7d49ee175b 100755
> --- a/tests/functional/ppc64/test_migration.py
> +++ b/tests/functional/ppc64/test_migration.py
> @@ -22,17 +22,6 @@ def test_migration_with_exec(self):
>          self.set_machine('mac99')
>          self.migration_with_exec()
>  
> -    def do_migrate_ppc64_linux(self, source_vm, dest_vm):
> -        with Ports() as ports:
> -            port = ports.find_free_port()
> -            if port is None:
> -                self.skipTest('Failed to find a free port')
> -            uri = 'tcp:localhost:%u' % port
> -
> -            dest_vm.qmp('migrate-incoming', uri=uri)
> -            source_vm.qmp('migrate', uri=uri)
> -            self.assert_migration(source_vm, dest_vm)
> -
>  
>  if __name__ == '__main__':
>      MigrationTest.main()
> diff --git a/tests/functional/ppc64/test_pseries.py b/tests/functional/ppc64/test_pseries.py
> index b45763c305..3996a4a878 100755
> --- a/tests/functional/ppc64/test_pseries.py
> +++ b/tests/functional/ppc64/test_pseries.py
> @@ -9,7 +9,7 @@
>  
>  from qemu_test import QemuSystemTest, Asset
>  from qemu_test import wait_for_console_pattern
> -from test_migration import PpcMigrationTest
> +from migration import MigrationTest
>  
>  class PseriesMachine(QemuSystemTest):

I wonder if PseriesMachine would be better to inherit directly from
MigrationTest, to avoid the timeout setup and temp QemuSystemTest to be
created on the fly (I'm not familiar with the test framework on side
effects).  But I don't see a major issue with it either so far.

Acked-by: Peter Xu <peterx@redhat.com>

>  
> @@ -116,7 +116,9 @@ def test_ppc64_linux_migration(self):
>          wait_for_console_pattern(self, console_pattern, self.panic_message,
>                                   vm=source_vm)
>  
> -        PpcMigrationTest().do_migrate_ppc64_linux(source_vm, dest_vm);
> +        mt = MigrationTest()
> +        mt.timeout = self.timeout
> +        mt.migration_with_tcp_localhost_vms(dest_vm, source_vm);
>  
>          # ensure the boot proceeds after migration
>          wait_for_console_pattern(self, self.good_message, self.panic_message,
> -- 
> 2.51.0
> 

-- 
Peter Xu
Re: [PATCH v2 4/4] tests/functional/ppc64: Remove custom migration routine
Posted by Thomas Huth 2 days, 22 hours ago
On 04/02/2026 20.51, Peter Xu wrote:
> On Wed, Feb 04, 2026 at 02:23:32PM -0300, Fabiano Rosas wrote:
>> Don't implement a custom migration routine at PpcMigrationTest and
>> instead reuse the generic one from MigrationTest.
>>
>> This removes the dependency of PpcMigrationTest from
>> PseriesMachine. Having one test import another causes unittest code to
>> instantiate the imported test, resulting in the setup and teardown
>> methods being invoked for the imported test class, even if no test
>> from that class will be executed.
>>
>> If run in parallel, the extra setup/teardown methods that result from
>> importing can race with the ones from the actual test being executed
>> and cause the following error:
>>
>> File "<SRC_DIR>/tests/functional/qemu_test/testcase.py", line 238, in tearDown
>> shutil.rmtree(self.workdir)
>> ...
>> FileNotFoundError: [Errno 2] No such file or directory:
>> '<SRC_DIR>/build/tests/functional/ppc64/.../test_migration_with_exec/scratch'
>>
>> Fixes: f4e34d0fd5 ("tests/functional: Add a OS level migration test for pseries")
>> Reported-by: Aditya Gupta <adityag@linux.ibm.com>
>> Signed-off-by: Fabiano Rosas <farosas@suse.de>
>> ---
>>   tests/functional/migration.py            |  5 +++++
>>   tests/functional/ppc64/test_migration.py | 11 -----------
>>   tests/functional/ppc64/test_pseries.py   |  6 ++++--
>>   3 files changed, 9 insertions(+), 13 deletions(-)
>>
>> diff --git a/tests/functional/migration.py b/tests/functional/migration.py
>> index 49347a30bb..e995328e83 100644
>> --- a/tests/functional/migration.py
>> +++ b/tests/functional/migration.py
>> @@ -65,6 +65,11 @@ def _get_free_port(self, ports):
>>               self.skipTest('Failed to find a free port')
>>           return port
>>   
>> +    def migration_with_tcp_localhost_vms(self, dst_vm, src_vm):
>> +        with Ports() as ports:
>> +            uri = 'tcp:localhost:%u' % self._get_free_port(ports)
>> +            self.migrate_vms(uri, uri, dst_vm, src_vm)
>> +
>>       def migration_with_tcp_localhost(self):
>>           with Ports() as ports:
>>               dst_uri = 'tcp:localhost:%u' % self._get_free_port(ports)
>> diff --git a/tests/functional/ppc64/test_migration.py b/tests/functional/ppc64/test_migration.py
>> index a3b819680b..7d49ee175b 100755
>> --- a/tests/functional/ppc64/test_migration.py
>> +++ b/tests/functional/ppc64/test_migration.py
>> @@ -22,17 +22,6 @@ def test_migration_with_exec(self):
>>           self.set_machine('mac99')
>>           self.migration_with_exec()
>>   
>> -    def do_migrate_ppc64_linux(self, source_vm, dest_vm):
>> -        with Ports() as ports:
>> -            port = ports.find_free_port()
>> -            if port is None:
>> -                self.skipTest('Failed to find a free port')
>> -            uri = 'tcp:localhost:%u' % port
>> -
>> -            dest_vm.qmp('migrate-incoming', uri=uri)
>> -            source_vm.qmp('migrate', uri=uri)
>> -            self.assert_migration(source_vm, dest_vm)
>> -
>>   
>>   if __name__ == '__main__':
>>       MigrationTest.main()
>> diff --git a/tests/functional/ppc64/test_pseries.py b/tests/functional/ppc64/test_pseries.py
>> index b45763c305..3996a4a878 100755
>> --- a/tests/functional/ppc64/test_pseries.py
>> +++ b/tests/functional/ppc64/test_pseries.py
>> @@ -9,7 +9,7 @@
>>   
>>   from qemu_test import QemuSystemTest, Asset
>>   from qemu_test import wait_for_console_pattern
>> -from test_migration import PpcMigrationTest
>> +from migration import MigrationTest
>>   
>>   class PseriesMachine(QemuSystemTest):
> 
> I wonder if PseriesMachine would be better to inherit directly from
> MigrationTest, to avoid the timeout setup and temp QemuSystemTest to be
> created on the fly (I'm not familiar with the test framework on side
> effects).  But I don't see a major issue with it either so far.

I think I'd also prefer to inherit directly from MigrationTest.
You could put the test_ppc64_linux_migration() method into a separate class 
that inherits from MigrationTest, while the other test_* methods stay in the 
old class, so that there is for sure no impact on the other tests.
(Having multiple test classes in one file is fine, we have that in a couple 
of other places already).

  Thomas


>>   
>> @@ -116,7 +116,9 @@ def test_ppc64_linux_migration(self):
>>           wait_for_console_pattern(self, console_pattern, self.panic_message,
>>                                    vm=source_vm)
>>   
>> -        PpcMigrationTest().do_migrate_ppc64_linux(source_vm, dest_vm);
>> +        mt = MigrationTest()
>> +        mt.timeout = self.timeout
>> +        mt.migration_with_tcp_localhost_vms(dest_vm, source_vm);
>>   
>>           # ensure the boot proceeds after migration
>>           wait_for_console_pattern(self, self.good_message, self.panic_message,
>> -- 
>> 2.51.0
>>
>