[CentOS] puzzling md error ?

JohnS jses27 at gmail.com
Mon Mar 1 11:56:25 UTC 2010


On Sun, 2010-02-28 at 14:37 -0800, 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.
> 
> btw, this is centos 5.4+latest x86_64, its primarily running postgres, 
> and our inhouse java middleware apps.  and was going to be a oracle grid 
> operations server.
----

Then any reason to not run the PERC in the 2850?  Non of my DB machines
run SWAP period.  My thoughts on Linux swap is if I were to use it, it
can't keep up the sync pace, been there.

I realize I say no swap but with MS DesktopEngine and SQL-CEServer I use
swap.

John



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