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RHEL 4 U5 - Server immediate shutdown

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# 1  
Old 08-03-2007
RHEL 4 U5 - Server unexpected shutdown
Dear all,

My server has shutdown frequently.
It is AMD64, OS is RHEL 4 U5.
I've seen the system log, before the shutdown occured:

Code:
Jul 29 04:28:56 localhost kernel: EDAC k8 MC0: general bus error: participating processor(local node response), time-out(no timeout) memory transaction type(generic read), mem or i/o(mem access), cache level(generic)
Jul 29 04:28:56 localhost kernel: MC0: CE page 0x2c3ea7, offset 0x570, grain 8, syndrome 0x1cc8, row 5, channel 0, label "": k8_edac
Jul 29 04:28:56 localhost kernel: MC0: CE - no information available: k8_edac Error Overflow set
Jul 29 04:28:56 localhost kernel: EDAC k8 MC0: extended error code: ECC chipkill x4 error

So I googled & found out the tool memtest86+ that checks the memory errors. I run the memtest86+ for 26 hours. Its 1st test was finished, but no more errors.

What should I do now?

Please help
Last edited by mr_bold; 08-03-2007 at 08:27 AM.. Reason: Chosen for unsuitable word for title
# 2  
Old 08-03-2007
EDAC is set of drivers in the Linux kernel that handle detection of ECC errors from memory controllers, so even though "memtest86+" haven't noticed errors, the memory may be corrupted in some undetectable way. Depending on the RAM modules you have, and server's importance, you can :
a) remove RAM modules one by one, thus eventually detect the faulty one.
b) ask the vendor of the machine for possible solutions.
c) replace all the RAM modules you have.
# 3  
Old 08-04-2007
Thank you very much. I will try them now.
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