[CentOS] puzzling md error ?

Benjamin Franz jfranz at freerun.com
Sun Feb 28 22:39:59 UTC 2010


John R Pierce wrote:
> Clint Dilks wrote:
>   
>> SWAP inside LVM is fine in my experience.  Personally I consider this a 
>> benign error and generally ignore it unless the mismatch count is very high
>>     
>
> And how do I know all these mirror data mismatches are Swap?  does not 
> each mismatch mean the mirrors disagree, which means one of them is 
> wrong.  Which one?  since they aren't timestamped or checksummed (like 
> vxvm, zfs do), I am playing 'data maybe'.    As someone who adminstrates 
> database servers, i have a real problem with that.
>   
Turn off the swap and see if the problem goes away. Or move the swap 
somewhere else than the software RAID and, again, see if the problem 
goes away. It isn't that hard to localize.

-- 
Benjamin Franz


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