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How to use timesync_validate_ptp method in lisa

Best Python code snippet using lisa_python

timesync.py

Source:timesync.py

...75             instead of /dev/ptp0 or /dev/ptp1.76        """,77        priority=2,78    )79    def timesync_validate_ptp(self, node: Node) -> None:80        # 1. PTP time source is available on Azure guests (newer versions of Linux).81        dmesg = node.tools[Dmesg]82        assert_that(dmesg.get_output()).contains(self.ptp_registered_msg)83        # 2. PTP device name is hyperv.84        cat = node.tools[Cat]85        clock_name_result = cat.run("/sys/class/ptp/ptp0/clock_name")86        assert_that(clock_name_result.stdout).described_as(87            f"ptp clock name should be 'hyperv', meaning the Azure host, "88            f"but it is {clock_name_result.stdout}, more info please refer "89            f"https://docs.microsoft.com/en-us/azure/virtual-machines/linux/time-sync#check-for-ptp-clock-source"  # noqa: E50190        ).is_equal_to("hyperv")91        # 3. When accelerated network is enabled, multiple PTP devices will92        #  be available, the names of ptp are changeable, create the symlink93        #  /dev/ptp_hyperv to whichever /dev/ptp entry corresponds to the Azure host....

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