From b30894533ec65a304c304016eaa461c23ca8d70c Mon Sep 17 00:00:00 2001 From: jianchunfu Date: Wed, 30 Nov 2022 14:21:17 +0800 Subject: [PATCH 02/17] tests/avocado: raspi2_initrd: Wait for guest shutdown message before stopping The avocado test tests/avocado/boot_linux_console.py:BootLinuxConsole.test_arm_raspi2_initrd finishes wiith exec_command(self, 'halt') # Wait for VM to shut down gracefully self.vm.wait() In theory this should be fine. In practice it runs into two bugs: * when the test calls self.vm.wait() Avocado closes the socket connection to the guest serial console immediately, so the avocado logs don't have the last part of the guest output: https://gitlab.com/qemu-project/qemu/-/issues/1265 * when the socket is closed, a bug in the QEMU socket chardev means that it loses any data that the guest UART has not yet consumed. This means that the guest doesn't always read the full 'halt' command string, so the test intermittently fails with a timeout: https://gitlab.com/qemu-project/qemu/-/issues/1264 Work around both of these by waiting for the guest to print the string that means it has completed the shutdown process. This fixes a very long standing intermittent failure in this test. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/636 Signed-off-by: Peter Maydell Signed-off-by: jianchunfu --- tests/avocado/boot_linux_console.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/avocado/boot_linux_console.py b/tests/avocado/boot_linux_console.py index 9c618d4809..58864ec163 100644 --- a/tests/avocado/boot_linux_console.py +++ b/tests/avocado/boot_linux_console.py @@ -512,7 +512,7 @@ def test_arm_raspi2_initrd(self): 'BCM2835') exec_command_and_wait_for_pattern(self, 'cat /proc/iomem', '/soc/cprman@7e101000') - exec_command(self, 'halt') + exec_command_and_wait_for_pattern(self, 'halt', 'reboot: System halted') # Wait for VM to shut down gracefully self.vm.wait() -- 2.27.0