PE1850 / PERC 4e/Si / RHEL4 problem

J. Epperson linux-poweredge at epperson.homelinux.net
Tue May 9 12:10:26 CDT 2006


On Tue, May 9, 2006 09:51, Matt Domsch wrote:
>
> FAQ:
> http://lists.us.dell.com/fom-serve/cache/110.html
>

Which is a canard.

"Without this information, the block layer assumes "write-through". This
is safe, because the controller has a battery-backed cache.".

Write-through is safe WITHOUT a battery-backed cache--the block layer is
treating you as though you DON'T have one.  The battery-backed cache
protects you in "write-back" mode.

"...it's not an error, and it doesn't affect the system."

Other than delaying your boot by at least a minute, only to make an
erroneous assumption.

That said, we all owe Matt a debt of gratitude for all the right stuff he
does, including being an apparent good influence on Dell.




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