Re: [PATCH v2 04/11] tests/acceptance: add kernel record/replay test for x86_64

["Alex Bennée" <alex.bennee@linaro.org>]

Philippe Mathieu-Daudé <philmd@redhat.com> writes:

> On 5/28/20 9:12 AM, Pavel Dovgalyuk wrote:
>> 
>> On 27.05.2020 17:53, Philippe Mathieu-Daudé wrote:
>>> On 5/27/20 12:31 PM, Pavel Dovgalyuk wrote:
>>>> This patch adds a test for record/replay an execution of x86_64 machine.
>>>> Execution scenario includes simple kernel boot, which allows testing
>>>> basic hardware interaction in RR mode.
>>>>
>>>> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
>>>> ---
>>>>   0 files changed
>>>>
>>>> diff --git a/tests/acceptance/replay_kernel.py
>>>> b/tests/acceptance/replay_kernel.py
>>>> index b8b277ad2f..c7526f1aba 100644
>>>> --- a/tests/acceptance/replay_kernel.py
>>>> +++ b/tests/acceptance/replay_kernel.py
>>>> @@ -55,3 +55,19 @@ class ReplayKernel(LinuxKernelUtils):
>>>>                       True, shift, args)
>>>>           self.run_vm(kernel_path, kernel_command_line, console_pattern,
>>>>                       False, shift, args)
>>>> +
>>>> +    def test_x86_64_pc(self):
>>>> +        """
>>>> +        :avocado: tags=arch:x86_64
>>>> +        :avocado: tags=machine:pc
>>>> +        """
>>>> +        kernel_url =
>>>> ('https://archives.fedoraproject.org/pub/archive/fedora'
>>>> +                     
>>>> '/linux/releases/29/Everything/x86_64/os/images/pxeboot'
>>>> +                      '/vmlinuz')
>>>> +        kernel_hash = '23bebd2680757891cf7adedb033532163a792495'
>>>> +        kernel_path = self.fetch_asset(kernel_url,
>>>> asset_hash=kernel_hash)
>>>> +
>>>> +        kernel_command_line = self.KERNEL_COMMON_COMMAND_LINE +
>>>> 'console=ttyS0'
>>>> +        console_pattern = 'Kernel command line: %s' %
>>>> kernel_command_line
>>>> +
>>>> +        self.run_rr(kernel_path, kernel_command_line, console_pattern)
>>>>
>>> This one timeouted (I build with --enable-debug):
>> 
>> I've got the strange behavior for the couple of times.
>> 
>> Console output was correct (I saw 'Kernel command line' in logs), but
>> _console_interation function didn't notice it.
>> 
>> Therefore the test finished with timeout.
>> 
>> How this could be possible?
>
> IIRC there is a problem in how Avocado consume the chardev output.

Is this the same problem Robert has tried to work around in tests/vm?

  From: Robert Foley <robert.foley@linaro.org>
  Subject: [PATCH v7 12/12] tests/vm: Add workaround to consume console
  Date: Tue, 19 May 2020 09:22:59 -0400
  Message-Id: <20200519132259.405-13-robert.foley@linaro.org>

>
> Cleber has been working on some PoC / kludge.
>
> Cleber/Eduardo do you remember the problem?
>
>> 
>>>   (1/1) tests/acceptance/replay_kernel.py:ReplayKernel.test_x86_64_pc:
>>> replay: recording...
>>> replay: replaying...
>>> INTERRUPTED: Test interrupted by SIGTERM\nRunner error occurred: Timeout
>>> reached\nOriginal status: ERROR\n{'name':
>>> '1-tests/acceptance/replay_kernel.py:ReplayKernel.test_x86_64_pc',
>>> 'logdir':
>>> 'avocado/job-results/job-2020-05-27T16.48-71d7bf4/test-results/1-tes...
>>> (90.68 s)
>>>
>> 


-- 
Alex Bennée