| #!/usr/bin/env python3 | |
| # | |
| # SPDX-License-Identifier: GPL-2.0-or-later | |
| from unittest import skip | |
| from qemu_test import Asset | |
| from qemu_test import wait_for_console_pattern | |
| from qemu_test import LinuxKernelTest | |
| from qemu_test import exec_command, exec_command_and_wait_for_pattern | |
| class QEMUFadump(LinuxKernelTest): | |
| """ | |
| Functional test to verify Fadump is working in following scenarios: | |
| 1. test_fadump_pseries: PSeries | |
| 2. test_fadump_pseries_kvm: PSeries + KVM | |
| 3. test_fadump_powernv: PowerNV | |
| """ | |
| timeout = 90 | |
| KERNEL_COMMON_COMMAND_LINE = 'console=hvc0 fadump=on ' | |
| msg_panic = 'Kernel panic - not syncing' | |
| msg_not_supported = 'Firmware-Assisted Dump is not supported on this hardware' | |
| msg_registered_success = '' | |
| msg_registered_failed = '' | |
| msg_dump_active = '' | |
| ASSET_VMLINUZ_KERNEL = Asset( | |
| ('https://archives.fedoraproject.org/pub/archive/fedora-secondary/' | |
| 'releases/39/Everything/ppc64le/os/ppc/ppc64/vmlinuz'), | |
| '6d77658130a7de1dd014ae14d7983c27f8ba1a61fa02e8d9064afdb8519e7e96') | |
| ASSET_FEDORA_INITRD = Asset( | |
| ('https://archives.fedoraproject.org/pub/archive/fedora-secondary/' | |
| 'releases/39/Everything/ppc64le/os/ppc/ppc64/initrd.img'), | |
| 'e7f24b44cb2aaa67d30e551db6ac8d29cc57c934b158dabca6b7f885f2cfdd9b') | |
| def do_test_fadump(self, is_kvm=False, is_powernv=False): | |
| """ | |
| Helper Function for Fadump tests below | |
| It boots the VM with fadump enabled, checks if fadump is correctly | |
| registered. | |
| Then crashes the system causing a QEMU_SYSTEM_RESET, after which | |
| dump should be available in the kernel. | |
| Finally it checks the filesize of the exported /proc/vmcore in 2nd | |
| kernel to verify it's same as the VM's memory size | |
| """ | |
| if is_kvm: | |
| self.require_accelerator("kvm") | |
| self.vm.add_args("-accel", "kvm") | |
| else: | |
| self.require_accelerator("tcg") | |
| if is_powernv: | |
| self.set_machine("powernv") | |
| else: | |
| # SLOF takes upto >20s in startup time, use VOF | |
| self.set_machine("pseries") | |
| self.vm.add_args("-machine", "x-vof=on") | |
| self.vm.add_args("-m", "6G") | |
| self.vm.set_console() | |
| kernel_path = None | |
| kernel_path = self.ASSET_VMLINUZ_KERNEL.fetch() | |
| initrd_path = self.ASSET_FEDORA_INITRD.fetch() | |
| self.vm.add_args('-kernel', kernel_path) | |
| self.vm.add_args('-initrd', initrd_path) | |
| self.vm.add_args('-append', "fadump=on"\ | |
| " -nodefaults -serial mon:stdio crashkernel=2G"\ | |
| " rdinit=/bin/sh ") | |
| self.vm.launch() | |
| # If kernel detects fadump support, and "fadump=on" is in command | |
| # line which we add above, it will print something like: | |
| # | |
| # fadump: Reserved 1024MB of memory at 0x00000040000000 ... | |
| # | |
| # Else, if the kernel doesn't detect fadump support, it prints: | |
| # | |
| # fadump: Firmware-Assisted Dump is not supported on this hardware | |
| # | |
| # Timeout after 20s if kernel doesn't print any fadump logs, this | |
| # can happen due to fadump being disabled in the kernel | |
| self.wait_for_regex_console_pattern( | |
| success_pattern="fadump: Reserved ", | |
| failure_pattern=r"fadump: (Firmware-Assisted Dump is not"\ | |
| " supported on this hardware|Failed to find memory chunk for"\ | |
| " reservation!)", | |
| timeout=20 | |
| ) | |
| # Ensure fadump is registered successfully | |
| if not is_powernv: | |
| self.wait_for_console_pattern( | |
| "rtas fadump: Registration is successful!" | |
| ) | |
| # Wait for the shell | |
| self.wait_for_console_pattern("sh: no job control") | |
| # Mount /proc since not available in the initrd used | |
| exec_command(self, command="mount -t proc proc /proc") | |
| # Crash the kernel | |
| exec_command(self, command="echo c > /proc/sysrq-trigger") | |
| # Check for the kernel panic message, setting timeout to 20s as it | |
| # should occur almost immediately after previous echo c | |
| self.wait_for_regex_console_pattern( | |
| success_pattern="Kernel panic - not syncing: sysrq" \ | |
| " triggered crash", | |
| timeout=20 | |
| ) | |
| # Check if fadump is active | |
| # If the kernel shows that fadump is active, that implies it's a | |
| # crashkernel boot | |
| # Else if the kernel shows "fadump: Reserved ..." then it's | |
| # treating this as the first kernel boot, this is likely the case | |
| # that qemu didn't pass the 'ibm,kernel-dump' device tree node | |
| wait_for_console_pattern( | |
| test=self, | |
| success_message="fadump: Firmware-assisted dump is active", | |
| failure_message="fadump: Reserved " | |
| ) | |
| # In a successful fadump boot, we get these logs: | |
| # | |
| # [ 0.000000] fadump: Firmware-assisted dump is active. | |
| # [ 0.000000] fadump: Reserving <>MB of memory at <> for preserving crash data | |
| # | |
| # Check if these logs are present in the fadump boot | |
| self.wait_for_console_pattern("preserving crash data") | |
| # Wait for prompt | |
| self.wait_for_console_pattern("Run /bin/sh as init process") | |
| # Mount /proc since not available in the initrd used | |
| exec_command_and_wait_for_pattern(self, | |
| command="mount -t proc proc /proc", | |
| success_message="#" | |
| ) | |
| # Check if vmcore exists | |
| exec_command_and_wait_for_pattern(self, | |
| command="stat /proc/vmcore", | |
| success_message="File: /proc/vmcore", | |
| failure_message="No such file or directory" | |
| ) | |
| def test_fadump_pseries(self): | |
| return self.do_test_fadump(is_kvm=False, is_powernv=False) | |
| def test_fadump_powernv(self): | |
| return self.do_test_fadump(is_kvm=False, is_powernv=True) | |
| def test_fadump_pseries_kvm(self): | |
| """ | |
| Test Fadump in PSeries with KVM accel | |
| """ | |
| self.do_test_fadump(is_kvm=True, is_powernv=False) | |
| if __name__ == '__main__': | |
| QEMUFadump.main() |