EDAC DIMM CE Error错误导致服务器重启

服务器一：

[root@localhost ~]# tailf /var/log/messages
May  8 09:10:59 localhost kernel: sbridge: HANDLING MCE MEMORY ERROR
May  8 09:10:59 localhost kernel: CPU 0: Machine Check Exception: 0 Bank 1: 940000000000009f
May  8 09:10:59 localhost kernel: TSC 1c434c49f9ef794 ADDR 6f9326740 MISC 0 PROCESSOR 0:306f2 TIME 1525741859 SOCKET 0 APIC 0
May  8 09:10:59 localhost kernel: EDAC MC0: CE row 1, channel 0, label "CPU_SrcID#0_Channel#1_DIMM#0": 0 Unknown error(s): memory read on FATAL area : cpu=0 Err=0000:009f (ch=15), addr = 0x6f9326740 => socket=0, Channel=1(mask=2), rank=0

这个是EDAC (Error Detection AndCorrection) 的日志.
按照上面的文档, 找出错误的DIMM:

[root@localhost ~]# grep "[0-9]" /sys/devices/system/edac/mc/mc*/csrow*/ch*_ce_count
/sys/devices/system/edac/mc/mc0/csrow0/ch0_ce_count:2
/sys/devices/system/edac/mc/mc0/csrow1/ch0_ce_count:4
/sys/devices/system/edac/mc/mc0/csrow2/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow0/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow1/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow2/ch0_ce_count:0

根据错误日志：
May 8 09:10:59 localhost kernel: EDAC MC0: CE row 1, channel 0, label "CPU_SrcID#0_Channel#1_DIMM#0": 0 Unknown error(s): memory read on FATAL area : cpu=0 Err=0000:009f (ch=15), addr = 0x6f9326740 => socket=0, Channel=1(mask=2), rank=0

[root@localhost ~]# cat /sys/devices/system/edac/mc/mc0/csrow1/ch0_dimm_label 
CPU_SrcID#0_Channel#1_DIMM#0

[root@localhost ~]# dmidecode -t memory |grep 'Locator: DIMM'

最后我们要做的就是，把有问题的F1插槽上的内存拔出来或是更换到其它的内存插槽上面，之后系统启动后不再报错

参考博文：
http://blog.tankywoo.com/2014/12/02/edac-dimm-ce-error.html
http://serverfault.com/questions/648240/how-can-i-find-which-memory-have-ce-error
https://blog.csdn.net/odailidong/article/details/46865255

服务器二：机器内存条报错：

May  8 17:09:08 localhost kernel: sbridge: HANDLING MCE MEMORY ERROR
May  8 17:09:08 localhost kernel: CPU 0: Machine Check Exception: 0 Bank 5: 8c00004000010093
May  8 17:09:08 localhost kernel: TSC 0 ADDR 4e92c9c0 MISC 4076f686 PROCESSOR 0:206d6 TIME 1525770548 SOCKET 0 APIC 0
May  8 17:09:08 localhost kernel: sbridge: HANDLING MCE MEMORY ERROR
May  8 17:09:08 localhost kernel: CPU 0: Machine Check Exception: 0 Bank 11: 8800004a00800093
May  8 17:09:08 localhost kernel: TSC 0 ADDR 0 MISC 5221001000101400 PROCESSOR 0:206d6 TIME 1525770548 SOCKET 0 APIC 0
May  8 17:09:09 localhost kernel: EDAC MC0: CE row 6, channel 0, label "CPU_SrcID#0_Ha#0_Channel#3_DIMM": 1 Unknown error(s): memory read on FATAL area : cpu=0 Err=0001:0093 (ch=3), addr = 0x4e92c9c0 => socket=0, ha=0, Channel=3(mask=8), rank=1
May  8 17:09:09 localhost kernel: 

按照上面的文档, 找出错误的DIMM:
[```
root@localhost ~]# grep "[0-9]" /sys/devices/system/edac/mc/mc/csrow/ch_ce_count|wc -l
16
[root@localhost ~]# grep "[0-9]" /sys/devices/system/edac/mc/mc/csrow/ch_ce_count
/sys/devices/system/edac/mc/mc0/csrow0/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow1/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow2/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow3/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow4/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow5/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow6/ch0_ce_count:1
/sys/devices/system/edac/mc/mc0/csrow7/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow0/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow1/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow2/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow3/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow4/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow5/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow6/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow7/ch0_ce_count:0

[root@localhost ~]# cat /sys/devices/system/edac/mc/mc0/csrow6/ch0_dimm_label
CPU_SrcID#0_Ha#0_Channel#3_DIMM
[root@localhost csrow6]# cat /sys/devices/system/edac/mc/mc0/csrow6/mem_type
Registered-DDR3

确定坏的内存条的位置