acpi导致的问题

今天过来发现泰国人说服务器出问题了，结果上去一看dmesg里输出了一串信息如下

INFO: task kacpi_notify:155 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kacpi_notify  D ffff88042fc28400     0   155      2 0x00000000
 ffff88041da19b30 0000000000000046 0000000000000000 ffff88041da19af4
 ffff88041d535ed0 ffff88042fc28400 ffff880028296980 000000012e96bbb3
 ffff88041da150e8 ffff88041da19fd8 0000000000010518 ffff88041da150e8
Call Trace:
 [] schedule_timeout+0x225/0x2f0
 [] ? __enqueue_rt_entity+0x2a1/0x2e0
 [] ? enqueue_rt_entity+0x68/0x80
 [] wait_for_common+0x123/0x180
 [] ? default_wake_function+0x0/0x20
 [] wait_for_completion+0x1d/0x20
 [] kthread_stop+0x4b/0xd0
 [] acpi_pad_idle_cpus+0xbc/0xd6 [acpi_pad]
 [] acpi_pad_handle_notify+0x96/0x196 [acpi_pad]
 [] ? __switch_to+0xd0/0x320
 [] ? finish_task_switch+0x42/0xd0
 [] ? thread_return+0x4e/0x778
 [] ? acpi_hw_write_port+0x32/0x87
 [] ? acpi_os_execute_deferred+0x0/0x36
 [] acpi_pad_notify+0x1e/0x5b [acpi_pad]
 [] acpi_ev_notify_dispatch+0x64/0x72
 [] acpi_os_execute_deferred+0x29/0x36
 [] worker_thread+0x170/0x2a0
 [] ? autoremove_wake_function+0x0/0x40
 [] ? worker_thread+0x0/0x2a0
 [] kthread+0x96/0xa0
 [] child_rip+0xa/0x20
 [] ? kthread+0x0/0xa0
 [] ? child_rip+0x0/0x20

 

在网上搜了一圈，发现都不是很靠谱，因为发生问题的全是acpi相关的服务，所以就把acpid关闭了，重启服务器之后发现一切正常。

于是猜想可能是acpi出问题导致了硬盘被关闭，之前还发生过acpi导致服务器重启的情况，这玩意在centos下似乎极不好使呀

把acpid关闭还是没有解决问题，于是再试了一下在内核中加入参数acpi_pad.disable=1再看看状态