75 lines
2.8 KiB
Python
75 lines
2.8 KiB
Python
import logging
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from autotest_lib.client.common_lib import error
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from autotest_lib.client.virt import virt_utils
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def run_kdump(test, params, env):
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"""
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KVM reboot test:
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1) Log into a guest
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2) Check and enable the kdump
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3) For each vcpu, trigger a crash and check the vmcore
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@param test: kvm test object
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@param params: Dictionary with the test parameters
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@param env: Dictionary with test environment.
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"""
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vm = env.get_vm(params["main_vm"])
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vm.verify_alive()
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timeout = float(params.get("login_timeout", 240))
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crash_timeout = float(params.get("crash_timeout", 360))
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session = vm.wait_for_login(timeout=timeout)
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def_kernel_param_cmd = ("grubby --update-kernel=`grubby --default-kernel`"
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" --args=crashkernel=128M")
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kernel_param_cmd = params.get("kernel_param_cmd", def_kernel_param_cmd)
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def_kdump_enable_cmd = "chkconfig kdump on && service kdump start"
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kdump_enable_cmd = params.get("kdump_enable_cmd", def_kdump_enable_cmd)
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def_crash_kernel_prob_cmd = "grep -q 1 /sys/kernel/kexec_crash_loaded"
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crash_kernel_prob_cmd = params.get("crash_kernel_prob_cmd",
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def_crash_kernel_prob_cmd)
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def crash_test(vcpu):
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"""
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Trigger a crash dump through sysrq-trigger
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@param vcpu: vcpu which is used to trigger a crash
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"""
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session = vm.wait_for_login(timeout=timeout)
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session.cmd_output("rm -rf /var/crash/*")
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logging.info("Triggering crash on vcpu %d ...", vcpu)
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crash_cmd = "taskset -c %d echo c > /proc/sysrq-trigger" % vcpu
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session.sendline(crash_cmd)
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if not virt_utils.wait_for(lambda: not session.is_responsive(), 240, 0,
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1):
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raise error.TestFail("Could not trigger crash on vcpu %d" % vcpu)
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logging.info("Waiting for kernel crash dump to complete")
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session = vm.wait_for_login(timeout=crash_timeout)
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logging.info("Probing vmcore file...")
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session.cmd("ls -R /var/crash | grep vmcore")
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logging.info("Found vmcore.")
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session.cmd_output("rm -rf /var/crash/*")
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try:
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logging.info("Checking the existence of crash kernel...")
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try:
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session.cmd(crash_kernel_prob_cmd)
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except:
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logging.info("Crash kernel is not loaded. Trying to load it")
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session.cmd(kernel_param_cmd)
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session = vm.reboot(session, timeout=timeout)
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logging.info("Enabling kdump service...")
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# the initrd may be rebuilt here so we need to wait a little more
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session.cmd(kdump_enable_cmd, timeout=120)
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nvcpu = int(params.get("smp", 1))
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for i in range (nvcpu):
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crash_test(i)
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finally:
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session.close()
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