Lucas Meneghel Rodrigues writes:
> A method to verify guest kernel panics can be very
> useful for a number of tests. Adapted from a function
> present on virtio_console test, create VM.verify_kernel_crash()
> and use it on unattended_install.
>
How about using a thread to monitor the serial console, so other test can also
benefit from this?
> Signed-off-by: Lucas Meneghel Rodrigues <lmr@xxxxxxxxxx>
> ---
> client/tests/kvm/kvm_vm.py | 32 ++++++++++++++++++++++++++
> client/tests/kvm/tests/unattended_install.py | 1 +
> 2 files changed, 33 insertions(+), 0 deletions(-)
>
> diff --git a/client/tests/kvm/kvm_vm.py b/client/tests/kvm/kvm_vm.py
> index 41f7491..ab60f71 100755
> --- a/client/tests/kvm/kvm_vm.py
> +++ b/client/tests/kvm/kvm_vm.py
> @@ -105,6 +105,15 @@ class VMDeadError(VMError):
> (self.status, self.output))
>
>
> +class VMDeadKernelCrashError(VMError):
> + def __init__(self, kernel_crash):
> + VMError.__init__(self, kernel_crash)
> + self.kernel_crash = kernel_crash
> +
> + def __str__(self):
> + return ("VM is dead due to a kernel crash: %s" % self.kernel_crash)
> +
> +
> class VMAddressError(VMError):
> pass
>
> @@ -1471,6 +1480,29 @@ class VM:
> return self.serial_login(internal_timeout)
>
>
> + def verify_kernel_crash(self, timeout=2):
> + """
> + Find kernel crash message on serial console.
> +
> + @param timeout: Timeout used to verify expected output.
> +
> + @raise: VMDeadKernelCrashError, in case a kernel crash message was
> + found.
> + """
> + data = self.serial_console.read_nonblocking()
> + match = re.search("BUG:", data, re.MULTILINE)
> + if match is not None:
> + match = re.search(r"BUG:.*---\[ end trace .* \]---",
> + data, re.DOTALL |re.MULTILINE)
> + if match is None:
> + data += self.serial_console.read_until_last_line_matches(
> + ["---\[ end trace .* \]---"],
> + timeout)
> + match = re.search(r"(BUG:.*---\[ end trace .* \]---)",
> + data, re.DOTALL |re.MULTILINE)
> + raise VMDeadKernelCrashError(match.group(0))
> +
> +
> @error.context_aware
> def migrate(self, timeout=3600, protocol="tcp", cancel_delay=None,
> offline=False, stable_check=False, clean=True,
> diff --git a/client/tests/kvm/tests/unattended_install.py b/client/tests/kvm/tests/unattended_install.py
> index 7c6d845..955f8d6 100644
> --- a/client/tests/kvm/tests/unattended_install.py
> +++ b/client/tests/kvm/tests/unattended_install.py
> @@ -33,6 +33,7 @@ def run_unattended_install(test, params, env):
> start_time = time.time()
> while (time.time() - start_time) < install_timeout:
> vm.verify_alive()
> + vm.verify_kernel_crash()
> client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> try:
> client.connect((vm.get_address(), port))
> --
> 1.7.4
>
> --
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