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RH2288H V3 server always reboot automatically when install windows

Publication Date:  2016-11-29 Views:  201 Downloads:  0
Issue Description

When install windows OS on the RH2288H V3 server, the server always reboot automatically when progress is about 34% to 43%.

Alarm Information

The server always reboot when install OS.

In the sel log, there are a log of "watchdog overflow,hard reset" alarm,


Handling Process

1, According to the sel log, the sever reboot because of the watchdog.

2, From \dump_info\dump_info\LogDump\operator_log , we found that before this issue happen, the setting of IBMC WDT suppor was changed from disabled to be enabled.

2016-10-20 22:40:47 IPMI,N/A@HOST,BIOS,User(Administrator),Set iBMC WDT Support For POST from Disabled to Enabled success,EvtCode:21700BE0
2016-10-20 22:40:47 IPMI,N/A@HOST,BIOS,User(Administrator),Set iBMC WDT Support For OS from Disabled to Enabled success,EvtCode:21700BE0


Root Cause
The BIOS Settig of the iBMC WDT was changed from disabled to be enabled. if we enable the iBMC WDT (watchdog) setting, the iBMC will try to communicate with operating system, if the communication failed, iBMC will send command to reboo the server.  
Solution
Disable the iBMC WDT setting in BIOS
Suggestions

1, This issue could happen in all of the servers , and for all of the OS.

2,It is not recommanded to change the iBMC WDT setting unless we are sure there is business need

END