| #!/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 |
| """ |
| |
| 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_EPAPR_KERNEL = Asset( |
| ('https://github.com/open-power/op-build/releases/download/v2.7/' |
| 'zImage.epapr'), |
| '0ab237df661727e5392cee97460e8674057a883c5f74381a128fa772588d45cd') |
| |
| 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("powernv10") |
| 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 |
| |
| if is_powernv: |
| kernel_path = self.ASSET_EPAPR_KERNEL.fetch() |
| else: |
| 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 registration |
| # succeeds, we get a log from rtas fadump: |
| # |
| # rtas fadump: Registration is successful! |
| self.wait_for_console_pattern( |
| "rtas fadump: Registration is successful!" |
| ) |
| |
| # Wait for the shell |
| self.wait_for_console_pattern("#") |
| |
| # 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="rtas 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("sh-5.2#") |
| |
| # 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) |
| |
| @skip("PowerNV Fadump not supported yet") |
| def test_fadump_powernv(self): |
| return |
| |
| 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() |
